440 Big Bore Kit [Archive] - ATV Riders Forum

honda_racer199

06-20-2002, 07:42 PM

I just purshased an IMS 440 Big Bore Kit, with JE piston and everything. I was wondering what should I do to the carb, or do I have to buy an Electron carb. And how are these kits on improvement on bottom end and mid range? Any help would be greatly appreciated! Thanks

Zero Z400

06-20-2002, 08:23 PM

Congrats on the 440 kit. You will need to rejet but a new carb would relly increase the power. I would get an FCR over the lectron. The boring should make a go through the gears faster but to get the full benefit u need a new carb, cams, port and polishing too. If u got a higher comp. piston then the whole powerange will be improved.

Later

nakomis0

06-20-2002, 08:26 PM

Its almost like this.... all that power you got from the 440kit ... well if you get a carb.... its gonna feel double:eek: :)

honda_racer199

06-20-2002, 08:51 PM

I also got the White Brothers cam and rev kit, but I guess I'm gonna save up for a new carb now

JabberJaw

06-21-2002, 12:17 AM

I just installed the FCR 39 carb today! It rocks... I can put the bike in 5th gear going about 30 mph and still accelerate at an impressive rate without shifting down. I keep trying to shift into 5th thinking I am in 4th....

oynot400

06-21-2002, 06:01 AM

Don't forget to get those rockers hardened with the cam. Otherwise you will be tearing it down again in a year or so. Believe me I know, I am going through it right now. :(
You are going to love that 440, big improvement all through the power range. When you do get a carb, it will be just like you installed the big bore all over again!