hotcam for '05 crf 250r

[rroost]

hi, i was looking for info on putting a hot cam in my crf 250r. i've heard great things about this. can you run it w/stock exhaust and is there any need to rejet?

 

[Eric Gorr]

There is a #1 and #2 Hot Cam. More low end or more top end. You always have to adjust the fuel mixture screw but mostly just for outside air conditions.

 

[Deztallica]

Hello. For the hotcam, do you need to look over the valve clearance? Put some other shims in, or does it work with stock valve clearance?

 

[Ol'89r]

Hello. For the hotcam, do you need to look over the valve clearance? Put some other shims in, or does it work with stock valve clearance?

Any change of cams will require re-shimming of the valves.

 

[MikeS]

Expect to get a good amount of low to md from the stage 1 hot cam, you loose the over rev. Pay someone to degree the cam or check it yourself. I have seen more than one ground a tad off spec... I liked the power but Junior ougrew in infavor of a more stage 2 type powerband.

 

[Deztallica]

Any change of cams will require re-shimming of the valves.

Okay, because I think I read somewhere that it didn't require any changes, but as I thought you hade to change shims. But do you have to try your way to good valveclearance? :whoa: