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
Blackmax

Valve check on 07 wr450

9 posts in this topic

I've decided to do the valve check myself and have taken most everything off. Do I need to take off the two engine mounts on the top ?

Share this post


Link to post
Share on other sites

Hey guys, I had to use a bar but I was able to get the bolts off. I have no idea why the mounts were put on so tight. Maybe the mechanic who did the last valve check for me used air.

Share this post


Link to post
Share on other sites

they probably had some loctight on them , or the old alluminum vs steel = fusion .

i usually put never seize on those bolts , never had them come loose .

Share this post


Link to post
Share on other sites

There should be a white chalky substance on the threads of the bolts.

The first time I removed the mounts it took alot of effort. Even torqued to spec it took alot of effort the second time. I'm convinced its the white chalky substance on the threads.

Share this post


Link to post
Share on other sites
There should be a white chalky substance on the threads of the bolts.

The first time I removed the mounts it took alot of effort. Even torqued to spec it took alot of effort the second time. I'm convinced its the white chalky substance on the threads.

the white chalky stuff is the zinc coating off the bolts corroding in the aluminum unlike metals tend to fuse together .

Share this post


Link to post
Share on other sites

Yes, there is a lot of the white stuff on the bolts. I will put a bit of neversieze on them. Could you guys tell me what sealent you use on the head cover gasket? Maybe R.T.V. silicone ? And the good news is my valves are all within spec. :)

Share this post


Link to post
Share on other sites
Could you guys tell me what sealent you use on the head cover gasket?

i dont put anything on mine

And the good news is my valves are all within spec. :)

this suprised you :lol: dude its a yamaha :lol::lol:

Share this post


Link to post
Share on other sites
the white chalky stuff is the zinc coating off the bolts corroding in the aluminum unlike metals tend to fuse together .

:lol:

The next time I have the bike appart anti seize is going on them bolts :)

The valve cover gasket is good to go. Just torque the bolts to spec and it'll seal properly!

Share this post


Link to post
Share on other sites

This will be probably the only time you check your valves. Mine are still in spec after two years. I checked a year ago.

By a honda if you want to adjust valves or change them often. : )

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