03-03-2013, 08:23 PM
Join Date: Oct 2011
Liked: 14 times
Originally Posted by brent
well i did looks at my book for the 86 motor and you are right it is a 34 mm carb but it also shows a round carb the one on it is a oval type carb and also i got a stock thumb throttle with stock cabel and cap also got a new cable and cap for the 86 and both the caps for the 86 are to small to screw on to the top of the carb it had a twist throttle on it when i got it so this is what made me think it was not stock and they had a fmf gold pipe on it with a k@n alumminum open air box on it so i think they where trying to make it faster
Brent, all the 250R's were 34MM stock. I think I gave you jet sizes to start out with in a previous post. As for the size of yours, you'll have to measure the ID of the intake side to determine what size it is. Honda did use a round slide Keihin on 250R's, but that was on the '85 ATC250R, all 86's three and four wheelers were PJ oval slides. And yes, on a machine equipped with a stock carb, the cap and throttle cable are all one piece, and probably won't fit an oversize carb.
2014 CRA Senior II and Buckeye Series champ
2012 CRA Senior II champ
2011 CRA Senior II and Buckeye series Harescramble Champion
2009 CRA Senior II and Buckeye series champ.
2007 CRA Senior II, and Buckeye series Harescramble Champ.
2003 Lonestar 250R
2001 Lonestar 250R.....now a 310
1986 TRX250R (restored to new)
1986 TRX250R (still in pieces)