valve seals problems

[TurboTR]

Anyone else ever have valve seals come off? In this case the black rubber ones with the teflon seal ring insert at the top. Just curious.

TurboTR

 

[nightdiver]

Yes, but my second spring was in contact with the seal and the guides were worn.
I replaced the seals with some with smaller ext. diameter, Isusu C 240 diesel i think and i had to cut it to make it lower
Works great two months now

 

[Chuck Leeper]

Valve seals off?

Todd, are referring to the Champ heads or the stage head?
If it's the Champs.. yes, I found 6 of them off and crushed on the set of "crackers" I sent back to Champion for repair..
Goin on the 6th mo. "anniversary" now....

 

[TurboTR]

Yes, GN1 R. But I don't think the problem is specific to them. Those 6 that came off yours Chuck, was it the exh side only, or?

TurboTR

 

[Chuck Leeper]

SEALZ

Yep, as I recall, it was the exhaust side. I think it was due to the puny spring OD that were on those heads. I see the new R heads have larger springs... Wonder why??

 

[TurboTR]

I dunno, maybe the exh back pressure in the turbo app makes it's way up the guide and balloons 'em up or just pushes 'em off. Gonna try a new seal.

TurboTR