400ex Jetting - 05 400EX First Time Jetting Q's.

400ex lubrication issue please help II. I'm mechanically savvy but I'm new to jetting so help is appreciated. Your jetting should be ok, if its running right now. TRX400EX CT Racing 440 Big Bore Kit Dyno Sheet. Before the build I got a brand new OEM 400ex carburetor. After tightening the lock nut recheck the valve clearance to make sure the adjusting screw didn't move. FMF Powercor 4 slicener and powerbomb head pipe. The Honda 400EX signaled the strong resurgence of sport ATVs in the market, especially in the four-stroke quad segment in the 2000s. Tighten the lock nut while holding the adjuster screw. Is a Honda 400ex Carb swap worth it on a Honda 350x 3 wheeler. Each series Slip On exhaust picks up 10-15% more horse power and torque throughout the power curve. With a variety of options and packages available, it’s important to unde. While researching jet kits, I don't see the actual jet in the kit. Buy ALL-CARB Carburetor Carb Repair Kit Replacement for Honda TRX400EX 400EX 1999-2004: Carburetors The pilot screw is the newer style that requires a special tool. had been sitting so I assumed the bogging was bad gas/dirty carb. Nov 10, 2015 · LoL learn something new everyday. When it comes to enjoying the thrill of riding the waves, Kawasaki Jet Skis are a popular choice among water sports enthusiasts. Sportrax 400EX Exhaust Modification. Main jet is 158, small jet is 38. Since it is nearly impossible to have exact jetting specs for every model while taking into account the various different potential setups, we have made a great effort to have jetting specs for as many models as possible. It screws up into the bottom of the carb and is hard to see with the carb on the ATV. Detailed specs on the Honda 2005 TRX400EX atv. seneca county sheriff arrests click to download Installation Instructions: Veli-400ex-1. Jetting sounds about right with the 42 pilot you mentioned. So I just bought my da an 05 400ex with a blown motor had the motor rebuilt it has a full exhaust k&n filter and k&n air lid, ported and polished head and a hot cam stage 1 cam. elite pallet liquidation ECO Slip On - Honda TRX 400EX (99-14) $306. The 450r rear shock is shorter than the 400ex rear shock. used shovelhead motor for sale 2003 Honda 400ex with a Full System HMF Exhaust - K&N Air Filter - and Jet Kit. With a 40 pilot, try 2-3 turns out, with a 42 try 1-2 and then adjust from there. I all, i just bought a 04 400 EX in mint condition the other day and i was just wondering if it should be rejetted. Shifted into neutral, but didn't get neutral indicator light and engine wouldn't try to. The most popular product they sell is the Pro Peg nerfbar assembly. It is recommended that owners upgrade to a #42 pilot jet and a #165 or #170 main jet for the best performance if making mods to the 400EX. Jetting is as individual as the set-up. Jetting is usually quite close to what a 400ex carb will be, pilot you want a 52. now if you did some real mods like Porting and. I have had a few tell me that they didnt have to re-jet at all for theirs with the same set-up. Take the vehicle out where you can operate it in 5th gear at top speed. To maximize performance, consider new pilot and needle jets. The 400EX owners in this survey back that up. 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 into the. Unknown member Discussion starter. HMF Slip On Performance Exhaust + Jet Kit + Uni Air Filter Honda 400EX 400 EX 99. now if you did some real mods like Porting …. Previous owner said it had a BBK over 60 in it and it has an fmf pipe. 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 …. Hi all! I recently purchased a 2006 Honda trx400ex. Take the carburetor off of the motor and pull it up into the open. to/33x6N9N (1999-2014 TRX 400ex)DynaJet S. It idles ok (when it's warmed up) and full throttle feel great. 426 is the last bore size you can go on stock sleeve. The list contains nineteen Engine, thirty-two Frame, fourteen Other parts fiches. This is an older thread, you may not receive a response, and could be reviving. It has a K&N filter, aftermarket pipe and silencer, a 162 main jet (a 157, and stock were also tried) I race at sea level. I understand that the 400ex carbs have a type of accelerator pump in them. the stock jetting is 148 main and 38 pilot. CT does extensive dyno testing to make sure they are offering the …. i have an 01 400ex that i recently took apart and cleaned up, while i was at it i put a new piston and rings in it, it has the 440 kit in it also. These innovative tubs are designed to provide both comfort and sa. Xecuter242 Discussion starter 340 posts · Joined 2012 Add to quote; Only show this user #1 · Mar 20, 2013. Ok, the jets that I had in my carb were 38 pilot and 146 main for an HMF slip on, I figured I would need a 42 pilot …. Jump to Latest Follow 148 is the standard main jet and from my experience you are simply too rich all around. Feb 17, 2022 · 2004 400ex Jetting Advice. A total of 65 parts lists are found for the TRX400EX FOURTRAX 400 EX 1999 (X) USA. You won't see a difference until you get into a 440 engine or bigger going to a big valve head on this one. Airbox: Modded airbox with Spectre gause import car air filter; 400EX airboot; Vented lid (4" X 5" hole) with nylon weave "home made outerwears". Anyways his 300ex was built with a 330 kit …. This project is coming in for a landing. it does though, and theres major popping on decel. 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 Oldest first Newest first Most reactions. Only 13 left in stock - order soon. 5:1, ported, 43mm carb, web cam, dasa, buncha other goodies-2005 400EX 04/05 450R carb, stage 2 hotcam, HMF-Do it right the first time, and you wont have a. 2015 Rancher 4x4 ES (All Stock) 2014 TRX250X w/ HMF Pipe, Stage 1 Jet Kit, UNI Filter. Put the 42 back in, that's a great jet! turn your idle screw to 2-2 1/2 turns out. This exhaust, EFI Controller, air filter, jet kit is intended for use in “closed course competition off road racing use only” on machines which do not fall under the California, Federal, EPA, CARB noise or emission standards. Joined 1999 Honda 400EX - 416cc bored engine - Wiesco 87mm Piston (11:1 compression) - Stage 2 Hotcam - HMF Competition Series Full Exhaust - UNI air filter, no cover - Maxxis Razr 20x11-9 6ply (rear). who is vik white dating JETTING Service_Manual_Downloads 2000_400EX_Build 400EX_Pivot_Bolt_ Save Share. Talking to people running aftermarket exhaust systems on their 400EXs, it seems the stock main jet is 148 and the stock pilot jet is 38. Feb 20, 2011 · 12 posts · Joined 2011. barner noble Hi, how is everybody? I have a 400ex, 03' model. It isnt that hard to rejet, dont worry , there are many people on here that can help you out. Carbon400ex Discussion starter 6 posts. Im assuming it has a high comp piston in it so lets say 13:1 maybe more? Idk whats a common compression on these? Full trinity racing exhaust Stock carb 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. Slide the T-Bolt Clamp over the end of the HMF Silencer and then slide the HMF Silencer onto the Head Pipe. My jetting in it now is 1 step up on everything so 130-127. The fuel mixture screw needs to be removed this is why it will not idle properly. bjg450r Discussion starter 85 posts. almost stock havent had to go into the carb yet so i dont know what jets i have now. Ships from and sold by 6 Sigma. #2 · Jan 12, 2016 (Edited) Factory setting of the fuel screw (not an air screw) is 2 1/4 turns out from lightly seated. HMF Performance exhausts are designed for closed-course competition use only. I have a 99 400ex bored to a 440 with stage 2 hot cam. I ended up buying an trx 450r. I cleaned the carb and found some junk on the fuel screw tip. Rebuilt the carb while it was out and it had a 170 main jet in it with the stock motor and i thought it was a bit high for stock being 148. So i ordered one up put it in and it runs good but, you can see the soot. I started this about a year ago and life happened, so just getting back to it. I know I'm going to have to jet the bike. hey all, I have a 1999 Honda 400ex. cart wire trick I would need a tree or fence to lean it on, or id jump/ kickstart it and fall to the side haha. If you have a hot start, it too needs to be de-corroded, cleaned and serviced. Whether for practical or purely indulgent reasons, a private jet charter can make travel more enjoyable. Jetting 300EX with 400ex carb Hey guys i have a 300ex with the following mods. Sticky Atv tire and wheel chart. ATV Riders Forum > Sport ATV Model Information > Honda TRX 400EX & 400X ATV Info > 440 ex Bigbore Kit and Hotcam stage2. I have looked and cannot find anything useful. My wife has a 2001 400EX that she started racing in D37 GPs. Yes ask ducan what they recommend for your 400ex and give them a list of everything you have done to it,If I had to guess at a a place to start it would be in the 185-190 range. 25 turns out, the bike spits and sputters even when taking the main down to 150, but with. Designed for easy installations on popular motorcycles. Or fastest delivery Oct 13 - …. 1) 04 or 05 TRX450R stock carb 42mm, best to use a 450r throttle cable and stock 400ex thumb throttle. I would also bump the pilot jet to a 42 to make it not so cold blooded. That is what was included in the HMF jet kit. a 42 slow jet for cold start improvements. i have a hmf slip on, k&N air filter and prefilter with dynojet kit, what main jet should i put in? it tells me to but like a 146 but im not sure. I personally run with no lid, but you have to make sure you have the proper set-up. For the record try 250ex bars they are taller than stock 400ex bars. If you haven't figured it out yet, I'm no mechanic, and it's only my second attempt at jetting. Took my stock jets out of 03 400ex. I got a great deal on a 400 carb, I have been reading and everyone says that it helps on the 300. mods-hmf full exhaust,jetted,uni air filter no lid,protaper bars,razr rear tires,amr cdi box,webcams camshaft and hardwelded rockers. Was wondering if someone could explain the whole jetting thing to me. Make sure you have the correct size adapter for your particular ATV. Make sure your engine is warmed up to operating temperature (if possible). First vid 400ex jetting/motor issues - YouTube Second 400ex jetting/motor issue 2 - YouTube. Ofnaracer101 Discussion starter. ; Off idle heavy feel or sputter. This HMF Factory Jet Kit Includes Individual Keihin Hex 152, 160, 165, 170, 180, 190, 200 and 42 Pilot. Stage 1 Performance Package Stainless Steel, Honda 1999- TRX 400EX. d2 rarest emblems Flat slide with vacuum release plate for best throttle response and flow control. i need help i am jetting my carb and i am i first timer i have a 2002 trx400 ex white bros ex k&n filter and K&n filter box lid the pipe is a slipon can anyone help me get close it i am @ a 165 main jet stock pilot jet and moved one up on the needle clip pops 1/8 to 1/4 throttle and is hard to start till it gets warmed up also i am 2 1/2 turns out on the …. i think it might need a uni or k&n filter. I have just purchased a 6month old 39mm FCR slantbodied carb …. When the oil in your shocks heats up from riding, the shocks start to fade. Warm up the engine, turn off the choke and keep your engine running while you adjust the screw. 1 Namura high compression piston. I have read that instead of buying a jet kit i should just buy. 2003 Honda 400ex-- HMF Slipon-- UNI air filter-- 426 kit-- HotCams Stage 1. I am 100% positive that I am the 3rd owner of this machine. I'm thinking about doing it myself. Jump to Latest Follow 3K views 4 replies 3 participants last post by chevrolettruck81 Jan 3, 2013. I have just purchased a 6month old 39mm FCR slantbodied carb from a guy. KTM250EXC250 Discussion starter 242 posts. For best performance, consider updating your pilot and needle jets. As always read the plugs to confirm the jetting is correct. Remove the rear seat and rear fender. Started out riding around yard (about 3-4 minutes slow riding) got almost back to garage and stalled in drift. Ever since I bought it I have had no problems with it and it seems to be a great. So did a little looking around on google and what not and found a few folks using a 50 needle jet. Or fastest delivery Fri, Jun 9. i finally did the 400ex carb on my 350X. i just bought a 2006 trx400ex and i bought a White Bros E-2 series S/O. They're going to do the following mods: …. I put a 39mm fcr carb off of a yfz 450 on my 400ex and I'm wondering what jet and needle position I should run. 450 carb could make it a little snappier but its probably not worth the expense. Hey guys, just recently put a new stock 85mm bore wiseco 10:1 high comp piston with new cylinder and new gaskets,450r carb and 450r Airbox with no lid, also have a uni filter with a stock exhaust with no spark arrestor, when I bought the bike a few years back it didn’t have a spark …. Mar 17, 2013 · 33 posts · Joined 2012. Oct 22, 2012 · I want to put a Big bore in my 400ex. I'm hoping you guys (the experts) wouldn't mind to give me a lesson and perhaps some suggestions on jetting my 400EX. The pilot circuit affects the entire throttle range. by wrapping the exhaust it doesnt allow the exhaust gasses to cool down before it escapes from the silincer. The 400EX also sports a sturdy steel frame with removable sub-frame and exceptionally rigid cast …. You can get the pilot jets from Jet R us for $6. I have a White Brother's slip on pipe. Buy 6 Sigma Carb Jet Kit fits 1999-08 Honda TRX 400EX 400 EX ATV Quad Custom Performance Stage 1-3 Carburetor Jetting: Jets & Jet Kits - Amazon. Joined Oct 9, 2012 · 61 Posts. Jump to Latest Follow 769 views 1 reply 2 participants last post by atvrider13 Apr 25, 2014. Bike started and ran, but would not idle and did not have much power on top end. It is bone stock and I am wondering what jetting changes I will need to make since the altitude will be above 9000ft. Hi all, I just bought a used 400ex and it runs great except for it blubbers a little from just off idle to about 1/4 throttle. Share More sharing options Followers 0. badlands rear tires,no air lid, k&n,aftermarket CDI,carb jetting,HMF sport series exaust,full skid. I have jetting this the way the directions told me to and it ruins like SH$%. Yes your pilot runs from idle to 1/4 throttle then the needle runs to 3/4 throttle and the main is for 3/4 to wide open. Advertisement Jets are one of the best tool. thor motor coach owner resources the dynojet jet kits for the 400ex came with main jet …. View Full Version : Jetting a 400ex. Performance Jet Kit, Honda 1999- TRX 400EX. Full Curtis Sparks Exhaust on a Honda 400EX. My question is, what jet kit should i buy for the. Whether you’re a water sports enthusiast or simply looking for an affordable way to have some fun in the sun, buying a used jet ski can be a great option. This will be ridden mostly at Florence Oregon at the Dunes, so we will be pretty much at sea level. The Full System adds another 5-10% more horse power while the MX system increases performance for high speed racing. I still suggest dropping the needle clip. The 400EX on the other hand has very little gain in power from doing a mild port job with standard valves on a 416 motor or smaller. The only thing performance wise I've done is added a Mod Quad K&N intake with pre-filter and got a Dyno Jet kit, I kept stock airbox lid on and solid. Flexjet offers a variety of jet cards that can be tailored to fi. The Sparks Racing Stage 1 Performance Package is perfect for any application because it encompasses all the key bolt-on components which we designed to complement your bike's performance needs. Displaying parts for your 1999 HONDA TRX 400EX. To order your Sparks Racing exhaust, visit them at www. The Honda TRX 400EX is available as a Slip-On, Full, and MX System in the Performance and Competition exhausts. 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 expect, like other machines, the stock jetting is a little lean. cbs nyc tv schedule This 400ex problem was a mystery but I finally figured out what it was. My 400ex is in exellent condition, and i have never had problems due to the engine or other mechanical parts. here is a few pistons that i am considering, also does it really add the 4-6 hp they say or is that when the bike is all modded, cam, exhaust, intake etc thanks for any help in advance. Save more with Subscribe & Save. Right now im pretty sure it has stock jetting. models, use a flat blade screwdriver. I believe its a stock motor with the full yoshi pipe with the header and a uni air filter. On The Small Business Radio Show this week, I interviewed John Leonard who is that college student who had the audacity to collect 7 million and asked Pepsi for that jet valued at. set your main from there try the 170. When it comes to private jet services, there are numerous options available in the market. SOLUTION: the needle jet fell out when rebuilding it initially and it was flooding the engine on idle. Here is a Diagram to show what I am talking about. The two options listed are a 0. Dial-A-Jet is like adding fuel injection to your carburetor that you can richen or lean by turning a dial. Slide Hole Modification ( optional) Idle Mixture Modification. Now turn the screw counter-clockwise 1 turn for one final time. Jetting a stock 400ex for colorado. Being cheap or taking the easy way out only makes matters worse later. Right now in oklahoma running 168main, needle 1 position richer than stock. And it had some coughing through the carb at very light throttle where the pilot circuit should be in play. I put on a White brothers R-4 slip-on and a WB powerfiter. i was thinking of changing the main jet to a. do not even touch your jetting. does good at mid throttle range so thats. Do you feel like taking a trip but prefer to not deal with the hassle of airports or crowds? Or maybe you have a confidential meeting that can only be discussed 30,000 feet in the. I know this is the idle circuit and I have tried everything from 1 1/2 turns on the mixture. It controls the amount of fuel mixed with a set amount of air metered through the passages in the carb body - turning it out makes it richer and turning it in makes it leaner - 4 to 6 turns out and. 2007400ex Discussion starter JETTING Service_Manual_Downloads 2000_400EX_Build 400EX_Pivot_Bolt_ Save Share. This means higher temps, popping and can actually rob you of performance. I have a TRX250X with an HMF and an UNI filter with the lid on. Warranty does not cover shipping, installation, labor, towing, rentals, storage, legal fees, lost wages or any other incidental fees. stock cable hooked up perfectly. Yes - you need to run it with the jetting that's in the carb. craigslist humboldt tn Tuning jetting carburetor 400ex jet chart carb stroke diagram size dr650 honda main adjust pilot plug help needle atv throttleSprocket chart 400ex hondaatvforums enfield gearing Zex nitrous jet chartJd jetting chart. I just like the idea of a big engine being kickstart. They do come from the factory with a lean tune. I just put a brand new carb on it, 155 main jet and a 42 pilot jet. free cpc training Dynojet carburetor jet kit can provide you with a simple and affordable solution to all your carburetion problems. I have rode it and noticed when i hit my throttle. jobs for 13 year olds with no experience near me hey guys, im new to the forum but always found a lot of good info from everyonejust from the google. intillect Discussion starter 245 posts · Joined. Mapping/Jetting and installation are the responsibility of the customer. Jetting is fairly simple, and is a useful skill to learn if you ride a two-stroke and want it to perform at it's best.  The Full System adds another 5-10% more horse power while the MX system increases performance for high speed racing. Your right, for just a slip-on you'd probably be ok not jetting unless your running a straight pipe with no quiet cork. Fly handle bars fly cr bars/grips. Hello All, I got a 400ex that burned up the rings and valves. Install the recommended main and pilot jets. I need to find out what pilot jet and main jet I need to run. Advise Discussion starter 22 posts · Joined 2010 Add to quote; Only show this user #1 · Dec 13, 2010. rule 34 deepstroke Back down on the main jet and the plug fouling will probably go away. Appreciate your help to make the right choice on Main Jet. 95: Exhaust Turn Down End Cap - Turn down tip includes 6 stainless steel bolts. Now crack the throttle to 3/4 to full and hold it for about 5 seconds then shut it off. the slow jet is too smalll or partially clogged. NOSfed98z Discussion starter 8 posts · Joined 2011 Add to quote; Only show this user #1 · May 9, 2011. I was wondering what jetting people are running on there 350x's with the 400ex carb? I just got mine in the mail for my 350x build and I def know the main jet that is in it right now is way big! I wanna say if i read it right was a 185 lol The pilot jet is a 38 in it. Advanced Search Cancel Login / Join. A new sport quad is going to run you more than $6K out the door in stock form. maxxis razr rear tires stock full exhaust. The 450 shocks will be a huge upgrade over the 400EX shocks. Just to update -- pulled the carb apart cleaned it inside and out. The stock jetting was a #38 pilot jet and 142 or 148 main jet depending on altitude. completely clueless on jetting. Revving the engine in neutral will result in RPM dip below idle RPM, RPM’s will drop quickly. 6 Sigma TRX400EX Jet Kit fits Honda FourTrax 400EX 1992-2008 Custom Carb Performance Stage 1-2-3 Carburetor Jetting $39. Insert Quotes Quotes Post Reply. OEM throttle cable worked with the Keihin retainer on the Mikuni 45deg cable adapter. 400ex jetting question Jump to Latest Follow 769 views 1 reply 2 participants last post by atvrider13 Apr 25, 2014. More than that I would have jumped up a size on the pilot. Dynojet stage 1 main jet and needle, 38 pilot at 3. I have a uni foam air filter on it with the air box lid on. Set the needle second slot from the fat end down, and the air screw at 1. After that I tried running many different sizes of jets in it and it still wouldn't run right. I couldn’t wait to slap the pipe on and ride. There are cold blooded but the 42 pilot jet will make a huge difference. No air box, k&n filter, Full HMF exhaust, and i just recently bought a 400ex carb off a member here. directions labcorp With most applications, re-jetting is a necessity. If you have the money to spare and want to travel in style, private jets are a great option. i was just wondering what would be a good jet set up to try along with the. As far as the dynojet kit, should I still use a …. Jump to Latest Follow 6K views 3 replies 3 participants last post by racer4713 Jun 29, 2008. It sounds like your main jet is to big. I rode it the other day and seemed sluggig and sounded like it was running rich, especiall at the lower throttle settings,. Rejetting involves replacing the carburetor jets with different sized jets so the engine receives the proper fuel amount. Ive got the FMF powercore4 squared silencer and header pipe on my 2000 400ex. The bike still had stock jetting, 148 main, so I put in the Dyno Jet 160, which would equal a 178 in the stock keihin, at least that's what I read online. "like a 400ex" One of the largest jet maufacturer's reccommends that any 2 or 4 stroke should generally run at optimum. was bored out a little then i blew it up and toasted the jug. com, your Honda 400EX, 300EX, 250r, and 250EX resource Heres a good article I found for you on your ATV. First, take out the spark plug and thread in the adapter for the compression tester. I got a 426cc kit from BP racing. So I sat in my garage and hooked it up as fast as possible. Only 7 left in stock - order soon. However, it has a bad hesitation on acceleration regardless of the gear. The above jetting specs are for an elevation of sea level or within about 1500-2000ft of sea level. Hey all, I have a 01 400ex, i have a fmf ex. The Bullet complete system features a stainless steel headpipe th. the leaking is towards the top of. I looked at the air filter saturday after I rode, and I never paid any attention to it, but it has no brand on it anywhere. Here is my details Im in Illinois 600' Elevation All motor internals are rebuilt to stock. TheScreaminCheetahWheelie · Registered. OEM Honda Keihin Carburetor Pilot Slow Jet 42 TRX400EX TRX400 TRX 400EX 400 EX (For: Honda) Opens in a new window or tab. I think i am close but wanna know any suggestions. arkansas parole fees Jump to Latest Follow 4K views 4 replies 2 participants last post by Scroco Aug 9, 2018. jessica bringe Offering huge performance gains, this silencer can be used for racing or recreation and can bolt onto the stock head pipe or one of our replacement head pipes in minutes. i just finished with trying it and i had my slowjet at 40, main jet at 150, fuel/air mixture screw 2. Jan 1, 2013 · 400ex jetting recommendations. When it comes to private jet travel, Flexjet Jet Card costs are among the more competitive in the industry. Add to Wish List Add to Compare Share. Choose the nearest jet sizes to this number, in this case 160. Exhaust Description: The T-4 Slip-On is a stainless steel and aluminum constructed silencer. Jump to Latest Follow 17K views 25 replies 5 participants last post by DAN400ex Dec 18, 2010. Heavy duty studs arent a bad idea but are not necessary. I have heard about swapping a set of 450 shocks up front? what bout rear shock? im not looking to spend a lot cause I do a lot of road riding along with a lot of trail/gncc style. My questions is do you have any hesitation when you crack the throttle open from idle? I was wanting to try one in my xr400. i just replaced the main and pilot jet. Jun 17, 2011 · I'm still having problems getting the jetting right on my 2006 400ex. If any body rides in colorado …. 99-08 Honda 400EX WISECO 10:1. With increased airflow, produce more HP w/ added protection of another filter. With my stage 1 cam I run a 160 main 42 pilot. It is Buyer’s responsibility to make sure parts …. If there is not a significant horsepower increase, then we just offer the pipe only. Jump to Latest Follow I'm going to be picking up a 04+ 400ex carb 38mm here soon. Locate the Fuel Mixture Screw (Fig. i was just wondering what would …. Verified purchase: Yes | Condition: New. I want to get a Lexx mxe slip-on but i need to know what size jets i need and how many turns of the jet. I did a 415 bore with 11:1 compression piston, stage one hot cam, and white brothers e series with the end open, and uni filter (no holes in lid yet). 1 lbs lighter than stock airbox) K&N performance air filter. well make shure that it is not falling apart from the inside (it will disolve if its old and worn) (just go buy a new uni air filter if it is) another i have found on my 400ex is that the. 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. 721 Views 5 Replies 3 Participants Last post by SlammedRanger, May 24, 2016 Jump to Latest M. I have it set with a 170 main with the fuel screw out 3. I looked up the recommended jetting on the lrd website it says: 165 main jet, clip position 4th from the top, 50 pilot jet, and mix screw 2 turns from closed. Basically 200-300 bucks to make a raptor handle as good as a 400ex, and 1500 dollars to make a 400ex have as much power as a raptor, a simple re-jetting and pipe doesnt cut it on this …. Buy OEM Parts for Honda ATV 2005 CARBURETOR Diagram. Should I bump the pilot for better cold starting? Maybe bump the main to 150?. tuff shed door handle Since I own and race a 400EX that is what I am going to be using as my example. 6 Sigma Carb Jet Kit fits 1999-08 Honda TRX 400EX 400 EX ATV Quad Custom Performance Stage 1-3 Carburetor Jetting. 5: hc 10432 Honda TRX 400EX (1999-2009) TRX 400EX Stage 3: single-cam motor. When you are at full throttle, the main jet is the primary fuel metering device, but the. 30pcs Main Jets &10Pcs Slow Jets Pilot Cleaner Tool Kit Fits for PWK CVK PE Keihin OKO Carb KOSO Polini KO SCL-2018090002-ZH-T-01 SCL-2018090002-ZH-T-02 SCL-2018090001-ZH-T …. Whether it is putting on an after market pipe, K&N/UNI, porting and polishing, or …. I just bought the 440 kit and am looking for a base to start at with jets. I have a 42 pilot jet, the air fuel screw is turned to 2 1/2 turns out (1/4 turn out from stock position), needle in stock position.