[herrubermensch]

Originally Posted by .

Are you still on the VAC valvetrain? Is it the same valve shim that gets spit every time or random/multiple? I know supertech recently came out with an updated design to fix the spitting shims above 8500 rpm issue. Wish they would have rolled that out before I got my set . I'm not sure if the VAC design maybe has the same issues.

Updated design of exactly what?

--Peter

[.]

Originally Posted by mrgicm

Everything in the head is from Schrick and the valves are VAC. The shim fells out after 100km. Firat I tought it was just one valve than we placed it back re measured everything and next it fell on 2-3 valves.

So did Supertech conclude the valves were the problem, how did they adress this problem?

Originally Posted by herrubermensch

Updated design of exactly what?

--Peter

https://www.instagram.com/p/BmOpQNaF...d=wfhgrj31hs78

It’s a new valve, retainer, and shim design apparently.

[stash1]

Originally Posted by .

https://www.instagram.com/p/BmOpQNaF...d=wfhgrj31hs78

It’s a new valve, retainer, and shim design apparently.

Interesting, wonder if the new design has enhanced rpm capability and has anyone tested it...not much info in that instagram blurb.

[.]

Originally Posted by stash1

Interesting, wonder if the new design has enhanced rpm capability and has anyone tested it...not much info in that instagram blurb.

I asked in the comments and didn't get a response. Yeah sucks theres not much detail. A couple people on Michael Essa's page said they're running them as well and it fixed their spitting shims issue but didn't say to what rpm. I figured if I ever pull my head off again I'd give them a call and find out.