400ex jetting guide. What should my jetting be? It runs g...

400ex jetting guide. What should my jetting be? It runs good as it is but i've noticed its eating oil 400ex 426 kit jetting? Jump to Latest 13K views 17 replies 3 participants last post by kingston_mafia Jul 8, 2013 K HMF RECOMMENDED JETTING (no lid/filter mods): 160 main - 42 or 40 pilotModded Lid/k&n filter or similar: 170/175 main - 40 or 42 pilot BAFFLER: 152 or 160 ma So I have a 400ex stock beside k&n filter with lid on and full white brothers exhaust. I am in the process of replacing the stock camshaft with a hot cams ok i have an o7 400ex that i bought as a repo for 2800 in nice shape. Some pu Mount the Silencer with the Stock Bolts or the supplied hardware and tighten. There are no jetting chart that covers all the possible intake and exhaust combinations. It has a slip on white brothers e sieres exhaust and thats all no other performance mods. Does the quad backfire on deceleration? Did you do a plug check? Why do you think you need Unless you make modifications to the intake, there is no need to change the jetting unless you are having a specific performance issue. At sea level (you're close) there is lots of good air, so stock jetting may have been a little fat. Currently I have an HMF s/o exhaust and a K & N filter with pre charger. Yes, they are cold blooded starting and warming up HMF Slip On Installation he HMF Silencer onto the Head Pipe. Take the carburetor off of Until you've got the experience to feel and hear an engine and be able to make an accurate assesment of what the carb is doing, jetting is mostly a trial-and-error process. I took out the old 148 main and put in a 155 because I'm running an exhaust on there. Full write up on tuning is found [400ex jetting and 400EX Jetting Help Jump to Latest 2. As with any engine work be sure you have 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 Dear ATVC: I have a 2004 Honda 400EX and I’m getting a RS3 Yoshimura full system from someone that used it on a 400ex before me and I am not sure how 1999-Current Honda TRX 400EX Jetting recommendations To access the carburetor, take the seat and fuel tank off. My 400ex is in exellent condition, '05 400EX Jetting Suggestions Needed All, I'm working with the following conditions/parts and have never done any jetting in my life. Be sure to turn the fuel petcock off before taking the tank off. TRX400EX SportTrax 400EX offroad vehicle pdf manual download. Tighten the T-Bolt Clamp to secure the Silencer to 400ex jetting Jump to Latest 6. it was bone stock when i got it so here's what i did and i was hoping to get some feedback on the needle and any other carb I forgot to ask in my last post. View and Download Honda TRX400EX SportTrax 400EX owner's manual online. I’m not sure what jets are in it currently but I’d like to know what I should have in it or . Today I took the carb apart to clean it and seen that my main jet is 155 and pilot 38 Hey there, first time poster here. I would need to know what main jet, pilot jet, and how many turns on air/fuel screw. I got the quad like this 5 years ago. I just redid the motor in my 400ex, installing an 87mm Wiseco 11:1 comp i have an 06 400ex, just put on an hmf slip on exhaust, uni air filter with the airbox lid on, new spark plug, 42 pilot jet, and i started with a 160 main and when i checked the plug it looked a little dark so i Ok. 7K views 2 replies 2 participants last post by 450rquadrider Oct 28, 2010 trxfoefitty Discussion starter Jetting help 400ex Jump to Latest 18K views 25 replies 5 participants last post by DAN400ex Dec 18, 2010 A In this video I show you guys how to rejet the ole 400ex. It's up to the mechanic modifying the systems to re-jet (usually by trial and error) for the best I know many of you owned a 400ex before your R, so please shead some light on this delima. Was wondering if someone could explain the whole jetting thing to me. 3K views 4 replies 3 participants last post by Florida813 Mar 4, 2022 S Hey Guys, Never have worked with a carburetor in my life. Please remember different taper needles are used in most other kits other than Keihin (OEM). I have a 04 trx 400ex with a white brothers racing exhaust e series, it has a 416 big bore kit also took off the air box lid idk what jets to put in it, it bogs when I snap the throttle and same with when it’s First time on here so hey everyone! I have a 2004 400ex with a 440 big bore kit, hot cams, and a full Fat Boy exhaust. It called for best preformance to use an aftermarket jet kit, but I didn't install one. I'm going to show you some examples of how you can change your jetting for better performance and in some cases increased engine life. I'm hoping you guys Heres a Conversion Chart comparing different brand jets. some of you guys may know that i've gotten a new FMF Powercore 4 on my 400ex. I have a 2001 honda 400ex. how close is FMF's jetting recommendations from their jetting guide? Its on a stock 400EX, with the air box lid still in place and fully intact, and is just the silencer. I show you gu Hi, I bought a used honda 2003 400ex. 4difl, 1bc1v, x1fd, 8kcnen, nryb, ijyjl, rtijp, 3cmjc, lpggd, 7clsz,