Best carb for xr400 forum. Get a stage 1 cam if your looking for a bit more power.
Best carb for xr400 forum I think XR's only sells it for the xr400 but you could call them to ask about your options. 00 out of 5 based on 2 customer ratings The best value for money I bought a Splitfire plug for my XR400once. First turn off the gas. I have a 1996 XR400R and would like to swap my stock carb to a 1998 XR400 carb. I realize its an uphill battle to get power and keep bike quiet and reliable,but i really like xr 400 set up. Motorcycle Chat. XR400 Tuning setting. Also turning a knob is easier for the non-mechanically inclined to attempt correction rather than disassembling that mysterious contraption known as a carburetor to guess what to do with a handful of jets that they don't Forum. I ran the stock carb with a 160/60 jet, stage 1 cam opened up exhaust. Tags carb mai removal xr400. Thanks in great new & used options and get the best deals for Mikuni TM Flat Slide Carburetor 36mm with Accelerator Pump at the best online prices at eBay! Free shipping for many The big performance difference was the carb in 98. I rebuilt mine twice when I had it. Best Match; Time: ending soonest; Time: newly listed; Honda XR400R Carb Jet Kit 96-04 XR 400 Custom Performance Carburetor Stage 1-2-3 (For: Honda) Opens in a new window or tab. Content on XR150LForum. However, the bike hasn't changed much since 1998 and is pretty well sorted out now. org. I just purchased a 2001 XR400, XR400 Best Mods. Anyone have jetting recommendations for a 98 Honda XR 400 for Barstow / Boron, CA area? Bike has stock carb and an XRs Only header and exhaust. You want the A16A needle. And may or may not have to make a extension to the carb to fit between the airbox and engine. The brochure is in as new condition. Enter Best Match. And you can still buy a new one from Honda but it will be 98+ CA version. The 98 and newer Xr400 have a pretty good carb and is easy to start hot or cold when properly jetted. So far am I correct? I know everybody runs the FCR / Edelbrocks for what seems to be high performance applications, but I'm really just wanting to replace the stock carb w/ something comparable. Mine came with later jets and no baffle. What the best carb setup (pumper kit, lectron?) that will allow 1 to 2 kicks cold start and after laying on it's side? I have knees that have mild arthritis and want to avoid kicking I believe either a 39 or 36 would be best for your XR. About eBay; Announcements; The Chinese ones are a gamble at best. To change the needle, you need to remove the carb. The bike isn't running as strong as other XR400's with new pumper carbs. It kind of bogs out in mid throttle position and then works out of it when I hit the top end. Post Reply. It's a sweet bike with one exception, the carb. When I compared the NGK to the Splitfire they looked differant, & it took ages to fire it uphot or cold. Most of the 450 class bikes have either a 39mm or 41mm size. everything, trust me. -----MY MODIFICATIONS TO A 2000 MODEL HONDA XR400R (Revised: Nov 25, 2000) Stock Carb Specs Main 142, Pilot #52, Needle Clip in 3rd groove. Aug 9, 2001 4 0. Tags I would have a search through the thumper forum, a good few have done this conversion, Best regards . The best and cheapest way to clean them is pine-sol. pdf above under Accelerator Pump Tuning. Vernon, OH is the best source for parts (Q-Jet). The Fora platform includes forum software by XenForo. Talk about lean. Edited December 19, 2012 by chuck4788 I am looking to richen up my needle on my 2002 xr400. 6189 posts · Joined 2006 Add to quote; Only show this user Drain the carb on a cold engine. The bike starts after a few kicks. Hey guys, I've got an 02 xr250r. Not that I have much problem with mine, seems to start reasonably well, and no real problems with hesitation (other than my own of course!) . In a few months, with fuel left in the carb, todays ethanol laced gas will gum up the tiny passages in the carb, the fuel screw passage being one of the most troublesome for starting. I was assured that it was the correct one for my bikeit was rubbish. The peak hp lists don't show you anything except just peak, you need to see the whole picture. Been sitting for 10yrs. My XR is basically stock, motor never touched and just a UNI So, loads of talk on the web about putting on a Mikuni flat-slide or Edelbrock pumper carb on the XR400, and transforming the beast. maybe someone here have experience with this kind of swap, and also wondering about the fitment and installation. What stock carb will work? I'm reluctant to spend the extra money for the Mikuni pumper carb as I don't know the history on the bike, I want to get it hi guys, long text incoming, have a questions regarding carb options for two of my XRs. Used is good enough for me when money is tight (which somehow all the time). Got it Thanks. Put something under the carb to catch the gas Each carb kit comes with a 130 main and a 15 pilot which fits most appilications. It really is the same carb with different needle and slide but still needed bigger slow and main jets at sea level. Jump to Latest A forum community dedicated to Honda XRV Trail Bike owners and enthusiasts. For instance, if Firestone bought his carb from XRs Only and it came with a 70 What I'm trying to figure out is, what carb offers the best value for an XRL with the following modifications: -10. Matt meant to say "subframe bolts" not swingarm bolts. Check the size. This is Gordon Banks' fantastic "Gordon Mods" for Honda XR 400's It is one of the best guides to cheap ways you can increase the power and ability of your XR 400. 00 and it was trashed, I had to heat up the pilot screw area and push out the broken off tip with a fine wire. A Forum for GENERAL PHOTOS & Videos ; Desertrunner's XR400 rebuild thread Sign in to follow this . I have taken the carb apar I have a 96 XR 400 with a mukini pumper carb and XR's only exhaust. I know of one guy who didn't need to remove the carb. Shop with confidence. Aug 9, 2001 #1 Hi guys, this is my first post here. Then connect them to the bracket on the carb. Basic Dirt Bike How-To's - Video Dirt Bike How-To's - Video Living The Moto Life - Video Bike Tests | Shoot-Outs - Video. I read a lot about 36's on XR400's, and 277 kitted bikes, but not the 33's. Seems like a new carb is far less expensive than having the SO - seeing as the local expert has advised getting an FMF Q4 pipe [which I really did want before it was suggested] and fitting it would require re-jetting anyway, I think I'm going oh man its been while, its time to put the snowboard away and start cleaning the dust off the tard!!!! so i need advice, which pumper carb should i go with my 2003 xr400r? im I have a 1999 XR400 and want to get a pumper carb for the obvious reasons but I don't know which brand to buy. 05-03-2013, 11:24 PM. Air Jet 1. This carb was way too big to fit in my XR400. basically aircooled CRF400's You've ridden the bike once since you bought it a few months ago. (Note this might be a generic set up, not specifically for the XR400. D. Contact An example would be XRs Onlys TM36 Mikuni they sell for the XR400. I was just trying to clarify to you what an fcrmx was. It was in horrible shape. I don't remember which set of holes in the throttle cam the cables connect. In your opinion what would you say its best independent of price. I'm sure I need to adjust the jetting and pumper settings. Does the Pumper Carb make that much of a difference? If so is it an improvement across the board, The "small" Q-Jets are 730 CFM and the "good" ones are 800. Any experts on here got any advice. 00. Get app Best. Rated 5. The plug looks fine so I don't think the bike is running lean. EDIT - Here is a link to the Motion Pro cable. When I let off the gas, while riding, the exhaust pops quite a bit. However, after sitting for almost two years unused, my bike needs some attention. Don't forget the intake on the Takegawa head is at a Honda Trail Bikes. dlhutson. com. It works fine for me so I'm not interested in switching to a new carb. Do I need do any mods to fit one?. Frame tubes are round where mine are rectangular where they interfered with cables etc behind and under tank. As the feeting part the problems I might find is the rear brake glass/switch. The CA model comes with a different needle. More sharing XR400 Carb Removal. A 400 needs a 750 CFM carb to properly perform. Bigdog54 And I'm thinking about the Pumper Carb. This is just a can with a double skinned outer wall, (I know I have cut one in half) with nothing inside it. These carbs are reported to increase performance quite a bit over stock and even the popular Mikuni 36mm pumper. You can google “FCR carb for XR400”, and I bet all your questions will be answered. . I have bought new everything, rebuilt forks shock, rotors, sprockets, etc. 5:1 piston -hot cam -full exhaust The goal is to achieve the best mid-range horse-power for wheelies and other Nothing from what I heard of the ALMIGHTY CURE ALL FOR THE 400 PROBLEMS. Had the stock carb. This is one of those cases that you might want to look up some dyno charts on XR400 pipes because you couldn't be anymore wrong. Member. For the DIY'er that is comfortable with a single line cable setup there is an inexpensive cable option. com is an independent Honda enthusiast website owned and operated by VerticalScope Inc. Find great deals on eBay for Honda XR 400 Carburetor. Honda XR400 Mikuni TM36-68 Flatslide Pumper Carb KIT. Varoom. uk is not in any way affiliated with Honda Motor Company First off let me say hi, I'm new to the forum but so far looks like an awesome site. Cliff's High Performance in Mt. All of the carbs have cast and stamped model marks on the right side. Assuming I need to replace carb parts, where's the best place to get a carb rebuild kit for the stock carb?I've googled and not found any hits so I'll ask here. It only came with the pull cable also. A key difference between the early model and later models xr400 carb is the slide and the needle. Just got back from a ride and have decided I need to something about the dead spot in my standard carby so I will fit a mikuni pumper carby. A little rich but runs very strong. Best Match; Time: ending soonest; Time: newly listed; 2004 2003 Honda XR400R XR400 OEM KEIHIN Carb Carburetor 16100-KCY-762 (For: 2001 Honda XR400R) Pre-Owned · Keihin (1) $249. Get a stage 1 cam if your looking for a bit more power. Pilot 12. I got the Mikuni on ebay for 220. uk is an independent Honda enthusiast website owned and operated by VerticalScope Inc. When I turned on the gas, it started draining fuel out the overflow tubes. I would be pleased to pass this on to somebody that has an XR and like me holds them in high regard. Any XR185/200 carb model will work just use jetting for the carb model. I once had a ‘98 XR400, with a 440 kit on it. Best Selling Products. jasonbc. a few guys with VERY tricked out XR400's on there like USD forks, Ohlins shocks, etc. Best part is you can do it with all the tools in your toolbox. (clutch kit, mikuni carb, superbrace fork stabilizer, gpr pro kit steering stabilizer with upper triple clamp, Any throttle input with stock carb for a cold start results in a negative response, but the engine does respond well to input of the Mikuni. There's more to lifting the front wheel than just the carb. First, I obtained the Sudco XR400 FCR-39 Carb. and what should be done to the carb when adding a slip on? anyone know a good set up for good sound but not too loud? looking for good performance for dual sport. I got a XR400 with an edelbrock pumper carb, but the accelerator pump billows is ripped and I can't seem to find parts for it. The Mikuni TM36 pumper carburetor kits from the Power-Barn are easy bolt-on horsepower for ALL XR400R's. It starts great cold or hot just about 1 kick each time but I think it’s too rich. I got the carb second hand and I don't know where the guy got it originally. Wrong forum, but best carb will be a XR200R carb. Too bad I cannot ride anymore at this time. How hard are they to fit up. What's new. I see that you can buy the "off the shelf" TM33/pumper cheaper then the jetted one. You'd have to make a custom cable mounting plate on the carb like I did earlier in the thread but you can use Motion Pro's throttle cable #01-0706 with the stock XR4 twist throttle. Yes, XR400's are jetted all over the map. XR150LForum. Save Share Reply Quote Like. Best Match. On my 145cc motor, I run a kitaco carb and it works good, but finicky to jet. The mods in it can be helpful for other model bikes. Way better than the stock carb. Honda XR400 is one of the best four-stroke trail bikes. I want to rebuild the carb too. Hi et al, I'd like to hear from anyone who has installed the Mikuni 33mm pumper carb on an urestricted, otherwise stock, XR250. Thread starter dlhutson; Start date Aug 9, 2001 . Also, a sl I for one would appreciate getting the corrected or best available information. What is the best skid plate for my friend's 2002 XR 400? He doesn't want something TOO big and he would like a direct bolt on type with easy oil change. what i learned since getting my So I recently acquired Blakebird's semi-famous XR600R. Would a new carb help this issue? Just wondering if anyone's seen any more performance by modding or swapping the carb on these bikes. I think the 26mm is a good size for the Takegawa head. Any thoughts? If you haven't My question is, am I better off just buying a new carb (pumper or traditional), or having the existing carb thoroughly cleaned. I've heard other 4-strokes make the same sound while off the gas. As they have a vacuum secondary, they "self-adjust' to engine demand. The motor is stock and I have a Uni-filter, and SuperTrapp with 12 disks on it and I’m at sea level up to 500’ elevation, TX. All of my search term words; Any of my search term words I put the XR's Only carb on my XR400 and love it. The bike usually starts on the first kick when cold and a few kicks after a tip over, not 20 minutes later. Get the throttle tube ends connected first. It looks nothing like the old carb, do these carbs mount fairly easily without much modification? EDIT: Nevermind, I guess Edelbrock doesn't make the carb for the XR400 anymore. Latest activity. But most of our riding is at part throttle so throttle response is very important and for that I think the FCR carb is the benchmark. A CRF450R carb,,,an 07 if you can get it. Throttle valve TM36/137 2. Thanks for the help Home / Shop / Mikuni Motorcycle Kits / Honda Carb Kits / Honda XR400 Mikuni TM36-68 Flatslide Pumper Carb KIT. Not sure of year,looks like early 90's from picture he just sent. The manual A Mikuni Pumper carb for an XR400R is $AU695; - is it worth it? (a review on the www from XRs only (seller) says all good stuff of course - 'best performance mod you can do') Anyone tried the pumper carb upgrade for the XR400? They come highly recommended from XR's Only, but of course they sell them. Desertrunner's XR400 rebuild thread I just installed a used Mikuni TM36 pumper carb. like he said, research on thumpertalk. brake Tweet #3. I would do it again in a hart beat. When hitting the gas hard around idle, I'm still getting a slight bog. My best procedure was to pull choke, give a few priming kicks with no throttle, bring to TDC, close choke, give a good kick and wick the throttle open at the bottom of the kick. Thinking of a 32 fcr from a crf150r,but havent seen any threads about it. Good hunting! "O" I have a 99 XR400 with the stock carb. Skip to main content. As soon as I put the cleaned up original NGK back in, instant/first kick from cold. However, lots of people swear by this as the best thing to do with your XR. The muffler is actually more restricted in 98 but is easly opened back up. 0 1996 XR400 Carb swap to 1998 XR 400 Carb. I'd rather not spend 400 bucks on a carb- If it's by and large the best way / best bang for the buck, then I'll do it. Tags 400 carried Could be a lot cheaper paying for a hours dyno time than ripping the carb on and off and stressing out with a big bag of jets! When I change the exhaust, filter and carb on my old 400 I could never get it to run the way I wanted (they are on this forum in a thread somewhere) There is a ton of past discussion on the Mikuni in the XR XR400 forum. Did say it The ATC 200x carb is 24mm (stock XR100 is 22mm) the XR200 (19??) carb is 26mm. I took a look at the jetting specs from a TM36-68 carb from a Mikuni sales guide. Use the forums search function. Remove the 3 screws holding onto the bottom of the carb. However on these early versions, they did not have a choke, enrichment lever, hot start ect Changeing the carb may cause the cheerleaders to actually attempt to set up their carb somewhat correctly where they just left a stocker as is. I have an 01 xr400 and was reading through some of these and read your problem with you're carb. Open menu Open navigation Go to Reddit Home. I have taken the open can and necked it down to a 19mm exit (like the original) and power (response) is much improved in Anyone know of information on modifications for the 2002 XR400 carb. Tags The Fora platform includes forum software by XenForo. XRs Only Smog / Air Pump Block Off Kit - Honda XR650L (All Yrs) XRs Only Oil Temperature Dip Stick - Honda XR650L (All Yrs) XL600 (83-87) XRs Only Magnetic Oil Drain Plug - Engine - RED; You could also fit a mikuni tm33 pumper carb but you will have to figure out the airbox side still. I was going through some folders yesterday and came across an original Honda dealer brochure for the XR400 and 250 bikes, (the later red models). Recently a friend of mine gave me his xr4. great pictures of the bikes and technical specs on the back page. $269. As he stood in my garage, and stared at my XR400 a light came on, and he realized he had Someone suggested that I cross-post this question here from the XR400 forum. I'd searched through all the old posts on Mikuni jetting before posting my question. XR400 carb problem. When introduced, the xr400 had some jetting issues that weren't "fixed" with simply modifying pilot/main or needle clip setting, etc. Maybe OK for Motard but not really suitable for MX. Air filter, oil change, etc. This carb isn't very smooth when the throttle is gunned. 5. The pipe only needs a re-jet. I just happened to be helping out a friend, who wanted to put a plate on his bike. You don't mess up your throttle rigging this way. They are designed to utilize The best carb is what you can afford. Sold the 32 fcr from honda crf150r to a guy with an older xr250. I believe either a 39 or 36 would be best for your XR. I'd like The problem is with the XR 400 standard silencer, the bike is jetted to run without a baffle, using a megaphone style of silencer that it comes fitted with. Might be a more expensive one. It came with new cables, and extension to reach the air box and was jetted correctly. I have it on my DR350 it's considered a good carb. Got a 96 xr 400 has an edelbrock carb on it, dont know much about setting them up or maintaining them. A clutch that may seem fine under normal riding Guys, I just got a 2004 XR400R that has a Mikuni TM-36 Pumper Carb and need to fine turn the carb. Full exhaust, air filter, open the airbox intake a bit and re jet carb to suit. Light Mode (Default) Dark Mode . So taking out the rear baffle is taking away the only noise attenuation that you Get the best deals for honda xr 400 carburetor at eBay. Hello! Totally new to the dirt bike world, I'm having trouble finding a stock carb for a XR400. Lots of riders with 96/97 Xr400 swear by the pumper carbs but they had Fix the decomp lever and stay with stock carb. 0. ) Main 130. Could do cams or stroker if you got really excited I think that from 96 to 04, nothing much changed accept the colours. As far as carbs go, you have a ton of options, CRF150f carb, which is more or less the 83-85 200x carb. The cables install just like the they do on the stock carb. Trailryder42. I am in Australia and know I can get one from the USA for about $400. The carb that JAT , XRBob and others have used on XR400's, is the one by Sudco. The kits are suited for mild to modified motors and come pre-jetted for immediate bolt-on installation. Soaked for days in chem dip tank also. I know theres a thread for the quicksilver carb for the XR400 already, but I'm more interested to know a couple basic questions about people with the MIKUNI Home. Should pull the fuel screw, it's spring, washer and oring and clean that passage with carb cleaner. It clearly states to set the stream to hit the needle. I used the information from you and Ochster to get the correct pilot jet Get the best deals on Carburetors & Parts for Honda XR400R when you shop the largest online selection at eBay. Feb 6, 2000 295 0. Skip to main content Shop by category. The BBR XR200 is ok. xrv. People put more work into putting new carbs on these bikes than it takes to get the stock carb tuned right, when right it is perfect. Needle 9DZH6-50. The fctory pro needle really made a difference. Mar 7, 2006 #5 Also, swaping the main jet isn't going to fix the off-idle hesitation. It came with the throttle cables and air filter box adapter fitted but it had a 9DZ-H6-50 needle so I don't think it came from XRsOnly. if it was me, I would go pipe, then 120kit, carb, and cam. He said he had no problem fitting carb,and runs unbelievably well with jetting which came in carb. An easier way is to remove the seat to have access to the throttle cables from above, DO NOT remove the cables from carb mounted bracket, just remove the bracket itself from the carb, with the one screw. my buddy has a trx 450 carb that he wants to sell i was wondering if you guys could help i want the xr to have a little more snot i was wondering how much it will help the xr 400 and how much effort is it to get it all to run right the carb they I put the filter on for XR400R and a ton of different options popped up, this one was the cheapest one I could find. I've had two stock XR600s, an HRC 628 and a stock XR400 fitted with Edelbrocks, my son's XR650R has an Edelbrock, the Eddy is a Best replacement carb choice for XR600R? Theme . com is generated by its users. I don't remember what nozzle they spec for that configuration. If you go bigger than a 120cc (like a 145cc or 148cc) and have deep pockets, the Yosh pumper carb is the ticket. uk is generated by its users. Jet your stock carb correctly and spend the 300 dollars or more towrds suspension mods. Both work great and tried and true, the KX65 carb, and a bunch of Yoshimura carbs which are great. Is this the best carb for a 97 XR400 with gordon mods, full stock running as a supermoto? Or should I go to the BST40? The BSR should be easy to feet. Is this just a fact of life for some 4-strokes. I have listed many of the jetting options. I should have watched him do it. Barnett Clutch Kit Honda Performance 303-35-10015 XR400R 1996-04 XR400 XR 400. Brand New. Content on xrv. In 98, they made a few changes to the carb and the exhaust system, but everything else is more or less the same. I have a stock 2001 XR400R that seems to need some Carb adjustments. Needle Jet 568 P-8. Link to comment Share on other sites. Burns a bit oil, but not too worried about that. with 8 discs i could get more low end response and a slight top end increase (mind you these tests were with the stock carb) and with 12 discs i had noticeably less response on the bottom end with a noticeable increase on top. Forums. I put an fcr on my tt500 flattracker,was a big improvement over the round mikuni. So, I'm planning to swap an XR400 engine into an '03 YZ250F chassis and I'm wondering if I might be able to reuse the Keihin 37MM FCR carb off the 250F. im just wondering would using a non pumper flatslide like the TM36 or a 36mm PWK on my 400R would help with the 'flooding after drop issue'. The Carb Shop is also known to do a GREAT job of rebuiding Q-Jets for performance. Shop by category. 99. Any year of XR400 will be a good bike though! 160,60 jets per manual for pre-98 models. Discussion in 'Thumpers' started by Bigdog54, Oct 27, 2012. Open comment sort options. OK, pulled my existing carb off my '97 XR400, soaked it, cleaned it, and re-assembled it. Honda Xr 400; Xr400 Forks; Xr400r Engine; Xr250l Carburetor; Additional site navigation. Kev. In regards to the exhaust, with the disc setup that my xr's only pipe came with, I could tune it to a degree. Free shipping on 96-04 HONDA XR 400 XR400 R XR400R CARBURETOR CARB ASSEMBLY MIKUNI (For: Honda XR400R) Pre-Owned · Honda. I can't afford $450 for a carb but I can afford $45 for a Mikuni TM38 (used, eBay) for my stock 600 and $75 for a Mikuni HSR40 (TM40-6 pumper for a Harley 1200, new off a guy on TT) for my 628. you have to modify the FCR carb where the push cable attaches. you need a NOSS adapter for the airbox side f the carb,they sell one for the TRX Quad and it fits perfectly the OE XR650L cables fit fine. Honda 400,s are great. The pilot jet is in the front where the fuel screw goes. I have the factory Pro titanium tapered needle on the 4th clip. Best Carb upgrade : Just looking to get the most and best out of my Xr150l. slip on exhaust for 2003 Honda XR400, what is best?. I'd rather build this bike using the 'right' parts, but if I've alr no exerience on my part, but i researched it while looking for an XR250/400 and everything i've read says a pumper carb really makes these bikes perform at their max. XR Going to upgrage my 03 xr250,definitely needs more oomph! Plan on 3 angle valve job,mild cam,but not sure of carb or cam,. General Mighty Car Mods Discussion. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! I know these bikes are still new to the US market- but has anyone tried rejetting the carb for a bit more power? Just curious. I've rebuilt many carbs and imho carb cleaner is horrible on the carbs, it eats up o-rings pretty badly. the OE XR650L cables actually work the best as they are the perfect length,,the CRF450R cables I got were a pile to Look at the section in the . It's the clutch that has to put the engine power to the ground, so if that's not in good shape or the springs are weak, it's going to have an effect. Still running rough, but need to tune my idle/pilot screw to clean that up (found good tips on doing that here). If you don't have a aftermarket head, I would just get the 200x/crf150f carb. Either way, I feel like this thing is losing lots of power. We have a great online selection at the lowest prices with Fast & Free shipping on many items! HONDA XR 400 XR400 XR400R CARBURETOR CARB REBUILD REPAIR KIT 1998 - 2004 (For: Honda XR400R) Opens in a new window or tab. I have one on my xr400 and adds more powedr than the pumper can by any means. Work on a cold engine. In '97 model year - I might be selling a Mikuni TM33 pumper carb setup with cables, air boot, (one of the best upgrades you can do for the xr400 . Does this year come with the 49 state A16 needle? And is the needle in my carb adjustable? I would like to richen it up one notch to see if the bike pulls a little better. The problem with the Mikuni TM28 or any other 28mm carb is very dificult to jet and really kills the bottom end. The only avail new carb are for the CA version but will work. Starts perfect every time, even when dropped (which happens often). I would appreciate any help. The 98 is much easier to start hot or cold the earlier models. Any other suggestions for needles on this bike? I New to site! Have read alot as of late! Thanks for all the good info thus far. Will I get a cleaner and Contrary to what APT claims, Vizard's dyno testing with different carburetors has shown that finer atomization of fuel does not always make more power, sometimes a lot less. It is often hard to start, seems to run rich, and is not smooth through the do a search on the Honda 250/400 forum for "XR400 Jetting Kev_XR 55" (use the AND option). Main jet: This can be reached by removing the large bolt on the bottom of the carb. r/XR150L A chip A close button. or Best Honda Xr 400; Xr 250 Carburetor; Xr400r Engine; Xr400 Forks; Xr400r Exhaust This is the best I have got it running so far and it runs pretty good. rfiiyxc auhq yho cnni ioazbtu lrhpf arrvym qgp nsduin wamjy