Jump to content
Sign in to follow this  

power vavles

Recommended Posts

i took my top end apert to clean and decorbonize everything so in the spring and summer it all good to go but i was woundering with the power valve spring on my 02 rm125 can i ajdust it to favor the low end and mid by how compressed it is its also jetted and bored to a 144 i have it set to stock

Share this post


Link to post
Share on other sites

Do not play with the stock setting. I know that a lot of people like to play with it, but don't.

Your power valve is set to open up at the "right" time. This means that if you did a dyno pull with it all the way open and with it all the way closed, at some point the results will cross. It's at that point that your power valve is set to open.

So changing the preload in any direction will only take power away from the bottom or the top.

I don't know if boring to 144 changed that point, I doubt it did. But if it did, then the shop that did the work should know, and they should be able to tell you what that new setting should be ~ if it changed.

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

Reply with:

Sign in to follow this  

×