400ex Stock Jet Size - 2008 Yamaha Raptor 250 SE.

And like stated the exhaust valves are set to 0. the bike has a stage 3 hot cam, big bore kit 89mm, wiseco piston with 11:1 compression, i believe it has been stroked not positive though. Eagle Mike's KLX needle kit comes with a 140,142 and a 145. Main Jet size: 132 Slow (pilot) Jet size: 35 AirScrew (number of turns out): 3/8 from fully closed Needle (what groove is the clip in, Brand, etc): stock needle, lean clip Reed brand and type: Barnett fiberglass reeds & stock reed cage, w/o retainer Airbox: List any mods to include filter Stock, UNI w/o outerwear Pipe: What brand and type Paul. 1996 - 2009 Honda TRX 400 EX CP Piston Kit. 3) Sparks Racing 42mm FCR carb which really is a …. Airbox: Modded airbox with Spectre gause import car air filter; 400EX airboot; Vented lid (4" X 5" hole) with nylon weave "home made outerwears". Only 18 left in stock - order soon. Example: The Honda EU2000i generator uses a 0. We usually ride around 7-9k ft above sea level. Main jet only comes into play at full. mwoolard1912 Discussion starter. (pipe and muffler) It has all stock engine components and a stock carb and I want to run it with a closed lid on the airbox and a Two-Stage Foam Uni Air Filter. I'll leave out how to do a pilot jet because there was already a very good post about it. Anyways, here are some pictures of the intake on my 05 400ex. longer than the stock jets(05 r +04 400ex) can they be used in the stock carbs ? anybody know where to get "short ones"? thanx the doctor. I would prolly recomend 102/104, 2nd clip, and 2 1/2 turns out on the screw for …. just want to make sure i order compatable jets for the carb cause its going on my 400ex still trying out what jets to get exactly ill be running a full. I have done some research, its the last reliable bore before i need to Re-sleeve, with 11:1. Clean the cylinder head cover gasket surfaces of the head and cover using a clean rag and a non-residue leaving cleaner (Berryman’s B12 cleaner sprayed onto a clean rag will work). 5 on the 2 outside carbs and 140 on the 2 middle carbs. if you have bigger tire size like 21x10 or 22x9 you will loose bottom end and gain top end. 45 pilot jet for a stock internal quad is gunna be really rich at idle. I bought my 400ex brand new in 2010 from a dealer. Main Jet: HRC 185 Pilot Jet: Stock Leak Jet: N/A Needle/Clip Position: HRC / Unk. To see if you have this problem: start the engine and keep it running, put on safety glasses and look into the carb with a flashlight and see if there is a TON of fuel coming from where the needle goes. The 400EX also sports a sturdy steel frame with removable sub-frame and exceptionally rigid cast aluminum swing-arms. I have a 06 400ex and starting it up isn't as easy as I would have thought (especially compared to my 04 250ex with a larger than stock pilot. Or worse, fuel can spill on to the starter motor or hot pipes, causing a fire when the bike is cranked. patience and about 4-8 hours of your time. The K&N has a bit better flow, but lets in too much dust and dirt. maxxis razr rear tires stock full exhaust. Take off the nut on the bottom of the bowl. Jetting Specs: 42p- 215m-4th clip NCVQ 2. Try using a 30 pilot jet for 70-85 degrees and use the stock 25 pilot for 85-100 …. 03 400ex with a few goodies 450er with some goodies and much to come If the stock jets are in it, it needs to be rejetted. Straight pipes and/or pods will require larger jets. Performance: 20% HP Gain peak; 20 bike length gain in a 300 yard acceleration run, average. 30 degrees out and need jet size suggestions i know the aftermarket ones dnt match up to the stock ones size wise i saw a conversion chart. Probably cause the PO added a slip on, but didn't rejet for it. Summer temperatures range 35-50 deg C, winter 20 - 35 deg C. 2006 400EX jetting/carb rebuild. 1 in) Information on this page is provided in good faith that it is accurate, but in no way is the data guanteed to be accurate. It was all jetting pretty much. I decided to buy an fcr 39mm carb and I put a size 50 pilot jet in it like I was told by a shop and it will only run with the choke on. 450r front suspension But cant seem to find one for the 400ex. Mitsubishi is rebranding its line of regional jets, using "SpaceJets" as the new name for its MRJ aircraft. I have a friend who just purchased 2004 Honda 400ex Quad. Boasting a 397-cc XR400R-inspired engine, Pro-Link rear suspension, 72-mph top-speed rating, and aggressive styling, the quad continues to ride high in today’s ATV market. The jet kit comes with all the following brand new parts: Main jets: 152, 155, 158, 160, 162, 165, 168, 170, 172 and 4 stainless steel allen head bolts for the carb bowl. I would look up and see what the stock pilot jet size is. Hello All, I got a 400ex that burned up the rings and valves. screenshot of bitcoin wallet Enjoy a boost of horsepower and smoother acceleration. The TRX 400EX is compact at 72. 450r carb (only can use style 04-05 carb); This carb allows more fuel in, its like adding larger fuel injectors to cars-more fuel with more air=more power. polite is way too small for that size engine. I assume the RD is the manufacturing stamp for identification purposes. I also have some that are only slightly larger if you think you want to compensate for. Changes to the intake require the most tuning. Stock is a 122 Main, and a 38 Pilot. Jump to Latest EXAMPLE you have to convert the mm to cm simply move the decimal left one place a stock 400ex IS 85. it has a slip on pipe (yoshi pipe). 23 in3), the bore-stroke ratio is 85 × 70 mm (3. Dynojet stage 1 main jet and needle, 38 pilot at 3. By C0leTrain 26 Location: Nebraska; My Ride; My Ride; Share; Posted March 4, 2014. When the oil in your shocks heats up from riding, the shocks start to fade. Feb 6, 2022 · Changing an exhaust system mainly affects the top end and jetting up 2 sizes usually compensates for lean running when at full throttle. The stock jets in the 400EX are a #38 pilot jet and a #148 main jet. Displaying parts for your 2002 HONDA TRX 400EX. 416 big bore kit +2mm (87mm) big bore kit, includes JE Pistons complete piston kit and a Cometic top-end gasket kit. Slide the Clamp over the end of the HMF Silencer and then slide the HMF Silencer onto the Head Pipe. The front 450r shocks are longer then the 400ex shocks, They can be used, but are not a bolt in upgrade in stock form. It has yoshi exhaust, lid on, twin air filter. To get 400ex/yfz450/450r front shocks to work you will need a after market top shock mount. 3:1 compression, 47&48 new style Hotcams, 400ex thumber, fcr 39. maverick4925 Discussion starter. The stock main jet in the Blaster should be a # 230. I was looking for any suggestions that would give a good increase in power and sound/look really good. '02 Honda TRX 400EX -- SOLD-Slip on Cobra Pipe-Moose Racing Handle Bars-Scott Grips-Black Honda Seat '07 Honda TRX 450ER. *On DRI Retail direct sales jets for stock OEM carburetors are supplied at no charge. My quad will die if I'm riding and then come to a stop in gear, with the clutch in, unless I'm giving it gas. Stock wheels are tougher than you think and you have a big selection to choose from, 250X 91-up, 300 ex, 250ex, pretty much anywheel 4/110 rear and 4/144 front, Kawasaki and suzuki too. You use the mixture setting to find the proper pilot jet size. -2005 400EX 04/05 450R carb, stage 2 hotcam, HMF-Do it right the first time, and you wont have a problem later. Mar 16, 2015 · Jake Markiewicz (aka Markie) Ride/Mods: 1999 Honda 400EX - 416cc bored engine - Wiesco 87mm Piston (11:1 compression) - Stage 2 Hotcam - HMF Competition Series Full Exhaust. Black Powerclip Chain Rollers - PLR-513-BK T. But it also has a small effect on all ranges of the carburetor. I tried several slow and main jet sizes before I ended up with this combination. He cut all the internals out of the muffler and put a peice of pipe straight through it to make it jsut like an after market straight through pipe. I think that the yamaha raptor 250 is more of a stock racing bike. 99 honda 400ex 400ex upgrades 440 big bore kit 11:1 compression piston stage 3 hot cam 04 450r carb P&P head id drop a main jet size. Feb 6, 2008 · I was rideing it at around 5000ft in his back yard. Any information on the causes of this and or how to fix it are greatly appreciated. Instructions on jetting included. Air fuel screw is 3 1/4 turns out. Installing a Honda TRX 400EX Chain. when I first got it I was told it was a 440 and it ran like crap. Honda's 400EX is one of the most popular ATVs on the planet. Dynojet's Stage 2 jet kit for the Yamaha Raptor 660 comes with main jets ranging in size from 136 to 150. stock for stock the 400ex wins. that should get you in the ball park anyway. Oh well I guess it is only money right! cals400ex. Research 2001 Honda TRX400EX Sportrax specs. Be sure to turn the fuel petcock off before taking the tank off. This item is OEM stock sizes and will fit all model years 400ex. I could change the main in my 400ex in a couple minutes, take the 17mm bolt out of the carb then put a short 6. I'm thinking they will be too big even though they are 9" rim size tires. A Stage 1 Carb Kit will normally offer you a …. Had a great time testing it out on these trails. Hey guys I'm new to the forums and I'm trying to figure out the jetting for my 400ex. i am getting 400ex soon and i would like to know what u guys are talking about. The pilot fuel screw on the 400ex carb is there to fine tune the amount of fuel/air at idle and under 1/4 throttle. Re-Jetting the stock Mikuni Carb. PS my 440 kit with a stage 2 hot cam, ported head and white brothers slip on liked 38 pilot, stock needle and 165 main with the air box lid on and a 175 main without the air box lid. The model and size of prefabricated concrete steps vary, and some store location. Stock Maxxis Mudbugs 03 400ex Hmf Slip-on Jet Kit Uni Air Filter 2004 Honda Rancher 350 Well I'm just helicoiled my 400ex came with drill bit size 21/64 and. 5:1, full HMF, air box: no lid, single base layer gasket, 13. This product is vehicle specific. The 400ex is very hard starting with stock pilot jet. It idled like crap and was poping like crazy with the 45 pilot i installed the 50 and it is. The greatest way to go in a 400 and make it reliable is to do a 426 and use the fcr carb to get the power you need. what i guess your not seeing what im seeing 400ex stock i gess is 27hp. So I have a 400ex stock beside k&n filter with lid on and full white brothers exhaust. I am going to be doing more trail riding than hill climbing this season and wondered what was recommended for a sprocket size. And the lightweight feel makes the 400EX seem even quicker as it begs you hold the throttle pinned. stock 400EX jetting is 148 main and 38 pilot. Then loosen up the 2 clamps on the carb boots. (F) = Front (R) = Rear IS = Independent Suspension SA = Straight Axle. The pilots look like little screws and the main jets are small6mm headed hex shaped brass. It is easier to check now then potentially have jets arrive that do not match! *** All jet sales are final. #1437 #1438 #1439 #1440 #1441 #1442 #1443 #1444 #1416 #1445 #1460 #1461 #1462 #1463 #1446 #1447 #1448 #1436 #1449 #1450 #1451 #1452 #1418 #1453 #1454 #1455 #1456. Below are different types of jets, look for one that is similar and check measurements to verify it is your jet. Detailed specs on the Honda 2004 TRX400EX atv. To get the full potential from our full out 425 we went to the Keihn FCR 39mm full race carb. For example if the Mikuni jets are …. Some of these items ship sooner than the others. 9 inches and accommodates medium-built to taller. I got the kit from a Craigslist guy that deals with nothing but v twin Kawasakis. dog nail trim sling With your mods if you added the 400ex carb you'd be jetting with starting jet of at least 150 a slow of 42, 2 3/4 turns from lightly seated and the needle clip in the middle. 60125 or 397cc JETTING Service_Manual_Downloads 2000_400EX_Build 400EX_Pivot_Bolt_ Save Share. Its is an 04 TRX 400EX, white bros exhaust, 152main jet, needle on the 3rd clip from the top, I was told it has a 440 kit. The 400ex kit comes with 134 138 142 146 150 155 160 165 170 mains. If you have a #220 in there replace with a #230 and plug chop. toyota 4runner ecu replacement Then all I would do is change the main jet from the 148 to something like a 140. The engine is stock but what jet sizes would be good for the main and pilot jets. Yeah, If you bump up the pilot jet, you will get more fuel from off idle to 1/4 throttle, if I remember correctly. I guess you could also call me a newbie to jetting my Honda too lol. Learn about what causes jet lag and the best ways to prevent and deal with jet lag at Discovery Health. The specs I am giving are from the 1999-2003 TRX400EX Clymer Service Manual. I know it would be more than just a few jet sizes up thats why i need a starting. com and jets are available to size the 400 carb close to the stock 300. My 2007 TRX400EX has only one slot for the clip therefore rendering it non-adjustable. If I'm running wide open on the throttle it seems I'm lacking fuel , but if I let off the throttle a bit the bike picks up speed. There is no Cut and Dry formula for correct jetting. I've seen somewhere that 06 400ex's have 18" shocks eye to eye?. The fcr is a very nice carb and seems very easy to dial in jetting wise but it looks to me like its way to tall and will require some fitment mods to make it fit right. Watch this video to see how to a step drill bit can drill a dozen different size holes in thin stock using only a single drill bit and how to control depth. hobby lobby locations in southern california When you get to the point the engine blubbers at top end (too rich) then back down on the main jet two sizes at a time until optimum performance is achieved. still very reliable but makes great power. Stock pilot jet is 38, don't know about them measurements your talkin about. 1999-Current TRX 400EX 155 Stock / Stock 45 2 Reinstall …. Increase power and improve performance throughout the entire RPM range, while improving throttle response and smoothness. That means if you need a jet 1 size up or down the numbers will match correctly. Go to a dealer or motorcycle shop and get the Keihin jets. I've done a lot of searching but haven't been able to get clear answers so I figured go t. I believe the stock main jet is a 165. 1996: Honda introduces the XR400R, a motorcycle that would provide the engine for the initial EX prototypes. I checked the write up and specs. They need to be reworked (re-sprung and valved) For the 400. I run a #70 with the stock airbox and MAC exhaust. i needed a bit more bottom end. Feb 18, 2005 · Main Jet: Mikuni 155 cc/min. I have a white bro e series exhaust. Then turn it out counting the turns. By conquering the Baja 1000 out …. I have a 2000 300EX that i bought from a friend. ) I read a common fix is to upgrade the pilot to a 42. stock photo legs Lets start one! Stole this from the z400 jetting database thread: THE RULES. We have seen combinations of all of these: Main Jet Primary (Needle Jet): #105, #110 or #115 Main Jet Secondary: #68 or #70 Idle Jet (Pilot Jet): #35 or #38. Result is a flow increase of nearly 10%! The outer chamber in the Powerbomb allows the air to expand, cool and ramp back up at a higher velocity. Piston displacement is 397-cm3 (24. The EVO R series draws on our rich heritage of making power. Reviewed in the United States on May 21, 2023. just put a 15tooth on and u can see a big difference in 4th and 5th gear gives u some more top end. PISTON TO CYLINDER WALL CLEARANCE. Do yourself a favor and ditch the 300 carb and exchange for a 400ex carb. Advanced Search Cancel Login / Join. I changed mine to #40 (stock Prairie 700)pilots to work with my snorkle and kept the fuel screws at 2 1/4 turns like stock. This will help clear up any misconceptions about what the heat range numbers mean and what the effects of using the wrong one are. Turn the screw clockwise till the screw is lightly seated. I was using a 160 main stock pilot dyno jet needle on 2nd notch from top and 3 turns out on the air screw and that thing would fly. Oct 22, 2012 · I want to put a Big bore in my 400ex. So the rears are 20" tall, 10'wide, and 9"diameter rim. It can rocket from 0 to 30 MPH in under 2 seconds thanks to the explosive low-end and mid-range power. FAQ Mikuni vs keihin vs dynojet. also make sure you use the right plug. 20x10x9 rear tires and 22x7x10 front tires. By positioning this “Bomb” at a key point in the system, increased performance and flow is achieved through the expansion and contraction of exhaust sonics through the system. i dont know about going up a size but i had two bolts do that on one of my 400ex's and i put red loctite on the helicoils and let them dry before putting on the cover and i have removed it several times since with no problems if you know someone welding them is the best way but if its. Install the cylinder head cover locating dowels and new gasket. Get about 5 or 6 main jets size 150, 155, 160, 165 and 170. Horses can't fit on human-sized private jets, but many travel thousands of miles to reach the world-famous race. Detailed specs on the Honda 2006 TRX400EX atv. It idled like crap and was poping like crazy with the 45 pilot i installed the …. 1-2 sizes bigger on the main and pilot is pretty close. The reason why I am asking, I recently bought 5 jets above the stock 400ex size and 2 below. the stock 400ex tire size in the rear is 20x10x9, which is perfect for the 15t sprocket. Hello to all, I'm bran new to this sit. 25 turns it's a good idea to jump up a size on the pilot. 2014 Artic Cat Wildcat Trail XT. It has a 28 horsepower engine and the Honda 400EX has a top speed of 72 MPH. Ok so im new to the whole quad scene just bought a 2003 400ex (opinions on this?) and im at sea level around 25 to 30 degrees out and need jet size suggestions thanks. 0 Fu#*ing Liter straight 6, A box full of hollow points and lord willing a GD Twinkie. 5 Pilot, K&N filter w/ Outerwears Full Yoshimura stainless system JE 13. I don't know about the heads but will pull a valve cover soon to find out. Changing the exhaust usually only requires increasing the size …. menards chums corners Displaying parts for your 2007 HONDA TRX 400EX. '05 LTZ 400 with stock rims and tires. the jetting was perfect on them. If you bump that front up, its equal to 2 rear teeth. Bike runs better and stabbing full throttle has some improvement, but still stalls at first. Part #: 278892 Mfg Part #: PLR-513-BK. just adjust the air fuel mixture screw out to 3 to 3. I would get it clean-up bored 10 or 20 over and then get the correct piston/ring set, either oem or Wiseco. You don't want to run with it past 3 turns out, at that point you would want to go up a size on the pilot. This item is for a very nice set of 2004 400ex stock side panels. I purchased my quad used so I don't really know the history. The EX is lighter (being air cooled), lower and shorter than the LTZ and therefore has better. I have a 145 in it now and my plug is telling me I'm still a little lean. OEM EQUIVALENT keihin jets - price each. Originally posted by Honda4hundredEX. Changing the exhaust usually only requires increasing the size of the main jet by about 2 sizes larger than what is currently installed - it's changes to the intake that affect jetting most noticeably. diggerzmound said: The stock sproket is a 13, I have a 14 on mine, there are a few people with Hi cmpression and big cams running 15 tooth. 7 more hp i need to be even with the 450r. The FMF guys suggested: 150 to 152 Main If it bogs out on you from 3/4 throttle and up from too kuch fuel go down a size and try againoh yes after you set …. 10 inch front and 9 inch back for wheels. Hello I have a 2006 Honda Trx 250 Ex quad. What should my jetting look like?. TRX 400EX Slide Spring Modification. No leave the needle alone 130 main and 40 slow and 2 3/4 turns out on the fuel screw that should get you close. 2006 SE - DASA Classic Full System - FCI - Cam Mod - OCP Ported Head - 42. there are 2 main factors you have to watch when dropping or adding teeth on your sprocket size. Open your carb before you order anything to verify what you have. It would be MUCh appreciated! Like to get this together ASAP THANX!. Refer to this to get the original jet size of your carburetor. Sportrax TRX400EX) is the 2nd year of the ATV responsible for the resurgence of sport-quad racing. ) Longer Engine Life- (The jet kit is a performance upgrade that allows the engine to run cooler which increases …. Jump to Latest Follow First off I just upgraded my 2000 450 es with a dyno jet kit HMF performance series and a k&n. I didn't really find anything searching. the top end was just built last week. He does ride at 5000ft every now and then so i need it to be jetted safely at that level. Mitsubishi is a relatively new player in the regi Mitsubishi is rebra. Its like a 400EX but twice the horsepower. I can't remember what the stock jet was but it was WAY smaller than 180. what are the stock sizes for the drive and driven sprockets? 400ex stock sprocket sizes? Jessem24. Yes - you need to run it with the jetting that's in the carb. Darn sure about the main but not 100% about the pilot. I rejetted again and went with the 100/102 on the 2nd groove. tahari home kitchen I was running a 150 main and now i'm at 168 main and I just started getting a little brown on the white ring. Sort by Oldest first If you are planning on reusing the locknut and continuing to used stock locknuts I would get the correct size wrenches for it. On the elevation scale at the bottom of the chart. Offering huge performance gains, this silencer can be used for racing or recreation and can bolt onto the stock head pipe or one of Pro Circuit’s other replacement head pipes in minutes. i just got a moose stage 1 and 2 jet kitand i was wondering what size of jet i should runi have a pipe, k&n air filter, w/ air box lid taken off any1 no cuz rigth now its running bad with a 143 in it. Count the number of links in the old chain, then count the same number of links in the new chain. May also be used with a good aftermarket Screw the Dynojet main jet provided into the Main Jet Adapter. K&N, exhaust baffle drilled out. You might have to go as low as a 138, but if you add exhaust or a higher flowing filter, the 140 will benefit you more. Only 7 left in stock - order soon. Right was a 92 main jet, and a 38 slow jet. STOCK JET SIZE: These values are provided to assist in finding a starting point for jetting. Mar 6, 2009 #2 T-Skully said: Can anyone recommend jet sizes (low & high speed) for my stock CV carb. Mostly likely bumping up the pilot jet by one or 2 sizes will give you the results you need without even touching the screw if you so choose. white=lean black=rich tan=perfect. Managing inventory can be a challenging task for businesses of all sizes. Remember the 195 Dynojet main is a little larger than the Factory Pro 220 main. Piston kit should run around $100 on eBay, and a bore/hone should be about $50. A smaller front will aid in torque, but you'll lose about 7-8mph. Hey I was wondering all the specs on sizes for a stock 400ex motor with stock pipe (screen removed but tip still on) and Uni air filter w/ no air box lid. As for the mods on this bike are not much. Additional information about the Honda 400EX ATV. RacersEdge rec port & polish,+1 ferrea valves,oem springs. A mate of mine modified the entire stock 400ex muffler for another mate of mine. Triple disc brakes provide much needed stopping power and an. -You can watch things happen, you can make things happen, or you can wonder what the H*ll happened. I dont know why its running lean though because it is all stock but i guess i will change it to like a 125 and see what happens. it does though, and theres major popping on de. Expert advice said I will need to change my pilot jet from the stock. + MOTOALL Air Box Lid Top Cover Compatible with Honda 400EX TRX400EX 1999-2015. Yamaha Service Manual states a #220 main jet. stock needles come with adjustments on them as for as I know. Why do those long, white clouds form behind jets flying high overhead? Advertisement The clouds that jets form on certain days are called condensation trails or contrails. The carb was jetted by someone. Displaying parts for your 2004 HONDA TRX 400EX. It is very comparable to my 440 with the stage 3 cam, janssen porting and oversized valves. For highly experienced riders 16 years of age and older. 128 curtain rod I think they said the Stage 1 is good up to like a 416 or something like that. 04 Prairie 700 realtree hardwoods. Jet sizes, fuel screw position, needle info should all be researched for your individual machine. and start asking around the locasl as to what dynojet you might need, chances are, most will give you the stock jet size, not the dynojet size. Leak Jet: N/A Needle/Clip Position: Stock / Middle Groove Fuel Screw: 2 ½ Turns out airmobile101 Year: 2007 Exhaust: HMF Intake: Uni Filter w/ modified lid -2005 400EX 04/05 450R carb, stage 2 hotcam, HMF-Do it right the first time, and you wont have a problem later. 5 turns (depending on conditions) Needle: Dynojet 0712 needle on 4th clip. 2003 Suzuki Z-400 Stock Mikuni Carb 155 mikuni main 22. You won't see a difference until you get into a 440 engine or bigger going to a big valve head on this one. You dont need much bigger jets with the lid on the air box, if you take it off go up 2-3 sizes further on the main. They are ideal to upgrade or replace the stock shocks on older ATVs or for riders on a budget looking for an affordable solution. i hope ya carry you current conversion chart. Warm up the engine, turn off the choke and keep your engine running while you adjust the screw. Dec 6, 2023 · Displaying parts for your 2006 HONDA TRX 400EX. 5mm to about 37mm which helps with a mild motor package like a 416. I'm still playing with mine, trying different combinations of jets and needles. Hey all, I have a 01 400ex, i have a fmf ex. 400ex stock jets If this is your first visit, be sure to check out the FAQ by clicking the link above. Hello, I am 15 years old and I recently bought a 2004 honda 400ex back in July, in terms of engine wise it is bone stock, I have put nerf bars and some new protaper handle bars and a graphics kit, I am looking to get a full exhausts system. Stock Airbox with lid on and k&n filter Its has to be running incredibly lean with stock jetting on stock motor to these mods. Each series Slip On exhaust picks up 10-15% more horse power and torque throughout the power curve. The jets i am running are a 42 pilot and a 155 main because its kinda cold here. 160 or 89mm - 440cc 440cc with an extra 4mm stroke = 460cc 416cc with an extra 4mm stroke = 440cc Just bore to the next size that's available and go with a good 11:1 piston (requires 93+ octane) either Wiseco or JE. This listing is for all the jets and needles out of a stock oem 400ex. Leak jet Needle Mixture screw (turns out) Stock or list modifications; Harley: 1200 XLC: 2004: stock: 180: 48 : Stock exhaust but free flowing baffles, slide drilled 7/64: Harley: 1340 FLT: 1985: stock: 190: 50 : Bored 10 over, ev 27 cam, S&S head, killer cv intake: Make Model Year Carb Main jet Slow / Pilot jet Leak jet Needle Mixture screw. I did pipes, removed airbox, reeds all in one move and went from the stock 200 to 330 (yes it's spot on and I could post pics for the naysayers)which seemed unheard of but that is what the bike took. set your main from there try the 170. Main Jets Range 150-170 (One of Each) Pilots 25, 27. When stabbing throttle from idle it stalls at first. fezz Discussion starter Only show this user. so here is the deal i have a 2001 honda 400ex i purchased about 2 weeks ago bike was smoking real bad so figure replace the piston rings and good to go. They are about $60 but are cheeper on rockymountainatv/mc. stock cable hooked up perfectly. Whether you’re rolling with a stock ATV or you’ve made some modifications, our Jet Kit will optimize your air/fuel ratio to eliminate rough spots. Unfortunately I don't remember the numbers but I think I went 2 sizes over stock on pilot and main jets. I also replaced the stock 148 main jet with a 150. The Uni filter still has better flow than the stock filter, and the oil in the filter traps. I have spent a lot of time going thru jetting threads on this site, and besides a few random posts here and there, there is no thread dedicated to ltz250 jetting. So I got new valves in it and a 440 kit w/10:1 piston and stage 1 cam and of course, still had the slip on. I bet you will find that 1-2 sizes larger than stock is what the bike would want. 400ex a arms will work but you need 400ex tie. 2004 Honda Sportrax 400EX pictures, prices, information, and specifications. Look into removing the PAIR system to reduce much of the decel popping. The stock carb with a 170 jet will work on our screaming 425 but does not flow enough at high RPM. Just to update -- pulled the carb apart cleaned it inside and out. +4 stroker, +4 big bore, KW SS stock size valves, dual KW springs, CP piston 12. The only way a shock would need to be recharged is if someone opened it up and damaged the seal. listen to lankybox the chicken wing song Offered for various off road MX and sport ATV models, the EVO R is a tried-and-true series that will save weight, add noticeable performance gains and sound tremendously better than stock. i ran that with a full exhaust and uni filter with lid off and stage 2 cams. EXAMPLE you have to convert the mm to cm simply move the decimal left one place a stock 400ex IS 85. Sometimes the cross reference between the MFG jets and the aftermarket jets may differ by number. The Honda 400EX is renowned for its impressive top speed. I know I'm going to have to jet the bike. I was liking what mods you have right up to the stock headpipe,, but as far as the jetting try putting the needle at the 3rd clip back the air fuel screw out 1/2 turn and go up 2 sizes on the pilot the main seems a bit small for the mods that's only about a 165 but your elevation will play an important role in that, but if you are …. Fuel needles, slide and needle springs are also included in the box. That said, several factors can impact the speed of the 400EX including the riding conditions, year of manufacture, and modifications made to the vehicle. 2003 Honda 400ex - Sold HMF Slip On Kenda Klaw Tires Dougles Rims Stock Maxxis Mudbugs 03 400ex Hmf Slip-on Uni Filter Kenda Klaws. SKU: PJKH99400X Category: Fuel & Intake. The jet sizes range from 49 to 51, so the carb in question would work fine on a 289 with the 52 jets you mentioned. It a inexpensive way to give you more power and have reliability. New Merch, New Store! Check it out: https://teespring. I had the exact mods on my 300ex plus a UNI filter before I went to a 330 big bore, and I used a 130 main and I adjusted the pilot screw 2-3/4 turns out with the stock pilot jet. your telling me i cant get 7 hp out of less say full exhaust cdi box lid off jet kit and if i need to a stage 1 cam. 25mm 400cc engine that has been overbored by 0. Correct - it is a Keihin 195 jet, which flows the equivalent fuel as a dynojet 208 main jet (if there was such a thing). Complete High Performance Intake Kit for Honda TRX400EX 400ex Velocity Intake System with K&N Air Filter VelI-400ex-1. 416 (+2mm) is more common however to give room for the larger bore later if needed. 2) Any year YFZ450 stock 39mm carb with 450r throttle cable and stock 400ex thumb throttle. The stock jetting was a #38 pilot jet and 142 or 148 main jet depending on altitude. This of course assumes that you are starting out with the stock jet size. Now, there's a handful of companies that want to make it a little more accessible. His main jet is a 180 which I thought was big. But before your done doing the rebuild on. If your air screw is turned in all the way to idle correctly it is a good indicator that you need a larger pilot jet. What's New; Forum Listing; 400ex jet. Feb 23, 2012 · That means more flex when going around corners. I’m wanting to upgrade the stock carb but not sure which jet sizes to use. Your pilot jet is too big if it doesn't die when the screw is bottomed out--it should die before it gets that far in. OEM throttle cable worked with the Keihin retainer on the Mikuni 45deg cable adapter. now i am trying to get the carb strait. That filter and holes in lid wont really make much difference from stock jetting. Thats the extent of my cooling mods. We have a great online selection at the lowest prices with Fast & Free shipping on many items! TRX400EX Jet Kit BASIC Stock TRX 400 Sportrax 1999-08 Carb Pilot-38 Main-148 (For: Honda) Opens in a new window or tab. 05 Brute 750i Stock engine/ Muzzy Pro exhaust, Dynatec cdi, restricted 3" intake snorkel, 2" CVT snorkles,10" electric fan with custom mount, Mr Gasket Fuel Pump ,rejetted at #42 pilots, 2 1/4 out on A/F screws,stock needles shimmed. Just get a hand full of jets and have fun finding out which ones work best - to make it easier, the pilot jet does not need to be changed unless it will not idle. Moose Ride) 07 Suzuki LTZ250 (Sons) 96 Polaris 250 Trail Blazer (daughters) 06 TRX450ER aka === Under construction. A stock engine might require jet changes depending. Going to a larger sprocket (ex. My elevation is about 400 ft - 600 ft. What is your elevation and I'll try to get you close to what you need. And the rear shock won't work because of the Rezzy. i dont have a big cam but i am running a 15 :tup: stock is 13 though, i did have a 12 and hated it, it was so slow :tdown:. Hey Guys recently posted I was having backfiring issues I need some serious help, Ive been through and through on this quad for over a week now and I cant seem to figure it out. So a 152 or 155 main and 40 or 42 pilot. Or fastest delivery Oct 13 - 17. Sorry I didn't see your post earlier. patriot mobile plan prices I have a 99 400ex bored to a 440 with stage 2 hot cam. Honda TRX400EX 400EX stage 1 kit $33. Once installed find a long open area (not the road) and get the quad warmed up to operating temperature. I think I would get that Lexx pipe off eBay. (stock bore) * OEM Honda CRF450. Take a flight through these military jet pictures. *2000 400 EX was mine now hers*. I got a 2001 400ex with a fmf slip on k&n airfilter w/ outerwares air box lid removed. It's my last performance-type upgrade I'm going to do to it until it needs rebuilt. The cheap but time consuming mod made the old 400ex go heaps harder and sound awsome. 5DH36 needle on clip 2 for non North American market I think. 5 mm socket in a pair of pliers and change the jet. Take the vehicle out where you can operate it in 5th gear at top speed. I want to put a Big bore in my 400ex. Seems to have new plastics and ergos. Panels are good, fit all year model 400ex's from 99 - 07. The Honda 350 family bikes went through various jetting changes over the years of production and here are the jet sizes to the best of our knowledge. 2004 400ex maxxis razr tires DG nerf bars pro taper bars FMF powercore 4 42 pilot jet 155 main jet moose racing air filter DG. I ride 50% of the time at 4800ft and the other 50% at 5400-5800ft. I replaced the stock 148 main jet with a 150. Get it jetted right and then just change the air filter (say a stock filter for a K&N) and it will have to be rejetted the increase the pilot jet one size larger only highly modified engines with a K&N or no air filter and a totally unbaffled exhaust may the pilot jet need to be increased by 2 sizes. if your stock, any reason your messing with a larger carb? in my expirences, unless you open the exhaust up and run a decent cam, there is no point in getting different than stock carb. Take the carburetor off of the motor and pull it up into the open. when you put the the throttle wide open it should move up and out of sight. Hey, I was just wondering if I can use a stock honda 400ex head gasket on a 416 bore? I am pretty sure I can, because isnt the head gasket the size of the stock sleeve? I no you need a bigger gasket for the 440 sleeve but I dont think you would need it for. As of 2015, Harley-Davidson Sportster stock bike tire sizes range from Iron 883?s 100/90-19 front and 150/80-16 back to Forty-Eight?s 130/90-16 front and 150/80-16 back. 2004 400ex, the stock tires still have the little rubber things on them from the mold, its mint condition, k&n air filter, RMStator CDI, OMF air scoops, DynoJet Jet kit, 450r carb, Fly red annodized handlebars, scott grips to match, custom heatshield and front sprocket gaurd, moded stock exhaust. 2014 400x jetting question I have a stock 2012 400x and just ordered some basic mods, EHS lid, Lexx slip-on, and uni filter. Are there any real differences in the DynoJet k. I removed the choke like yzroostinya suggested. Do i need to rejet my carb and if so what size jets would be best. kx60 forks dnm shock, tb143 kit, tb 55mm stroker crank, tb 4th gear drum, tb primary gear, mikuni tm28, tbr pipe, tb clutch kit. Get the best deals for honda 400ex carburetor jet at eBay. If you put the same carb on a 300 ex, a stock 400ex and a built 440ex, the 440 wil have the smallest jets of them all due. Feel free to fix this so I can take this review down Worked perfectly for my Honda 400ex. The 400EX also sports a sturdy steel frame with removable sub-frame and exceptionally rigid cast …. barndominium for sale tennessee zillow To adjust your throttle cable, take the black air boot off and look into the carb. Right now it came with a 155 main and 45 pilot. Jetting is as individual as the set-up. I run a 48 pilot jet and it isn't even rich. Yeah 400ex's only over heat when people dont know how to tune them properly. I have looked and cannot find anything useful. And I used this jetting anywhere from 0-5,000ft +. Now crack the throttle to 3/4 to full and hold it for about 5 seconds then shut it off. With no airbox lid , a good starting piont for the main jet would be around a 185 or 180. Jetting a 400ex carb for a 250X is a PITA but it can be done with paitence. An aftermarket camshaft is a great updrage. 275 kgf/cm2) Front Rim Size: 10in. personally, I would buy both an 180 and a 170 I would install the 180 first and a 45 slow is the smallest I would go, start there and adjust the screw as required. A 165 Dynojet would be something like a Keihn 155). my kit and the site says for stock exhaust use a 126 main jet, and for aftermarket pipes or slipons use a 130 main jet. I have had it in the creek a couple of times so I had to put the lid on to keep the water out. What size chain do I need for that? I don't want to have to buy a chain breaker, so if you guys know exactly how many links it would need that'd be awesome.