Jump to content
Sign in to follow this  

HotCams Valve Clearences vs Stock Clearances - are they the same?

Recommended Posts

I have stage 2 HotCams on my 2008 YZ250F.  They were already on it when I bought it, I have about 17 hours on it since i bought it so i figure its time to check them, sure seems like it by the harder to start symptom too.  So I dont have instructions or whatever came with the hotcams.  So, do I shim/adjust my valve clearances to what it says in my bike's service manual, or do hotcams have a different clearance spec/tolerance?  I dont want to shim to my stock clearances obviously if hotcams are designed to run at a smaller or larger clearance. Thanks in advance!

Share this post


Link to post
Share on other sites

Don't know about the YZ, but on my honda it told you to set it differentely, it should say on the little paper you recieved in the box, but since you don't have that, maybe check on their website?

Share this post


Link to post
Share on other sites

I have Hotcams also.  The book says intake  .10 - .15mm.  Exhaust .17 - .22.  The paper that came with the hotcams said intake .15  Exhaust .20. That's within range of what the book says.   I adjusted to what Hotcams said.  

Ok, thanks! after more searching, i found a few people said this - that hotcams gives a number within stock tolerance.  I assume this is typical of all models... out of curiosity, do you also ride a YZ250F or what?

Share this post


Link to post
Share on other sites

Ok, thanks! after more searching, i found a few people said this - that hotcams gives a number within stock tolerance.  I assume this is typical of all models... out of curiosity, do you also ride a YZ250F or what?

01 WR250F   CW 269cc with stage one hotcams.  Trail riding.

Share this post


Link to post
Share on other sites

01 WR250F   CW 269cc with stage one hotcams.  Trail riding.

I also do trail riding with a 269cc CW kit.  I posted a thread on this, but:  Do you know where I could find a rebuild kit for the CW 269cc motor?  I found the gaskets but the only piston/rings and top end parts i found all come with the cylinder so they're way expensive...

I wish the guy put stage 1's on my bike, I'd prefer a low-mid improvement over a mid-top.  but I'm glad that at least theyre on there  :thumbsup:

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  

×