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
Blackyz450

yz450f carb boring or 13.5.1 je piston?

3 posts in this topic

2006 yz450f would you bore the carb or put in a 13.5.1 piston.. right not it has ported head and 12.8 je piston and stage 1 hot cams and it is drag raced and I run 110 fuel because we have to at the track

 

Share this post


Link to post
Share on other sites

A higher compression piston usually gives you more bottom end power. It can also make you lose top end too.

Share this post


Link to post
Share on other sites

Bore the carb.  Alternatively, you can fit the carb from a CRF450R.  They're 41mm vs. 39 on the YZ.

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