HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
moorespeed426

2010 yz450f aftermarket cams

8 posts in this topic

i have a set of gytr cams in box but am afraid i need to get better valve springs to handle these things? or can i put them in a stock head no mods at all?

Share this post


Link to post
Share on other sites

gtyr cams /head combo run stock springs,just check valves, if in spec. ,if not change shims.Gtyr cams & crower & stock like 13.5-14/1 pistons, cams make more power than a port job,and cheaper. I,ve run ported ,not ported camed big piston . Best combo gtyr head, 14/1 piston,gtyr cams.

Share this post


Link to post
Share on other sites

reason i ask is my bike came with a set of gytr cams brand new in box, can i throw those puppies straight in my stock head and go rip? no race gas needed? and i just did a top end last night on the bike, oem piston, is that a big deal to have a high comp piston?

Share this post


Link to post
Share on other sites

No,It's just that the cams are mid-top ,and the 13.5-14 pistons ,fill in the low end,but make the middle a mile wide.You can run 1-2 teeth off your stock motor set-up,and still have more bottom. No race gas for cam change,13.5piston no,but likes it.I have crower ,stock,gtyr cams they are in specin the current head with the shims I have,but you should always check.

Edited by galligar

Share this post


Link to post
Share on other sites

I live s.d., we're going to marty smith's track on sat. you can ride my bike (14-1) or my buddies(13.5-1) see what you think.The big piston makes the biggest change in power.

Share this post


Link to post
Share on other sites

i live in nor cal but thanks for the offer. and i think ill try the cams out one day just to see how they are. what kind of piston do u recommend?

Share this post


Link to post
Share on other sites

JE or cp both excellent, 13.5 /14to1 & u4 or mr12 (mr12 very good,but pricy). pump gas +octane booster cheapest way to go.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0