Jump to content
Sign in to follow this  

08 wr, just checked valves, few ?'s

Recommended Posts

I just did my first valve check on my 08 WR 250 last night. Everything went pretty well considering it being my first time doing a valve check. Anyway I had a few questions.

First, I was not able to check the middle intake valve. Do you guys just trim the feeler gauge a little bit? I was using my buddy's feeler gauge's so I did not want to cut them, but I was not able to fit it in there. The 4 other valves were in spec so I just assumed the 5th valve would be in spec as well.

Second. On this write up on how to check valves on an 06 YZ 250 (http://www.thumpertalk.com/forum/showthread.php?t=564726) the writer says there should be 12 pins of the cam chain in between the 2 punch marks on the 2 gears. (see pic here) attachment.php?attachmentid=2142&d=1169759071

but on my WR I counted 13 when the piston was at TDC. Did I do it wrong or is the timing retarded on the WR by 1 pin of the cam chain?

Hope that second one makes sense. Thanks

Tim

Share this post


Link to post
Share on other sites

yep, wr rides the short bus. Not sure about the center intake valve. Some tool companies, such as snap-on, make narrow feelers, but i'm not sure who else does. Try Sears, they should have something.

Share this post


Link to post
Share on other sites

I think the wr will have 13 pins and the yz will have 12 pins. As long as all the marks line up it shouldn't matter whether it's 12 or 13 pins between marks.

Share this post


Link to post
Share on other sites

and looking at your photo... I count 12.:thumbsup:

That picture I stole from the guys write up for a valve check on a YZ 250. I didn't take a picture of my WR when I did my valve check. I was just using it as a reference pic.

Tim

Share this post


Link to post
Share on other sites

Tim, the WR's exhaust is advanced 1 tooth for, i believe, a better bottom end lugging ability.

the auto decomp will turn on way to early if you retard it to YZF spec for High Speed Torque(high RPM)

you can get a YZF cam, or hotcams if you want the top end power. I have the above mention and pictured feeler gauges, and WHOA, they are awesome and really super convenient.

don't count pins, just line up your marks as the manual says and you will be fine. counting pins IMO is a waste of time

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  

×