Valve Seal Problems
Thread Starter
Racer
Joined: Dec 2000
Posts: 339
Likes: 2
From: West Hartford, CT, USA
Valve Seal Problems
We're having problems with exhaust valve seals. Car is 427 C5R, LS7 heads, Kooks long tube headers, high flow cats. I use the car as an instructor for HPDE events & a very small amount on the street.
Rubber/viton on stock seals began deteriorating last year. After track session & sitting for hour car would smoke on initial startup, 2-3 secs, then disappear.
Installed new "upgraded" blue seals over winter. Worked fine until about 1000 miles & 6-8 track days, then the same issue again.
Took valve seals off; 2 exhaust seals had the blue tops burned/eroded away.
Same problem also happened on a friend's 2008 Z06 with the stock seals.
Appreciate any hints on problem/solution(s).
Rubber/viton on stock seals began deteriorating last year. After track session & sitting for hour car would smoke on initial startup, 2-3 secs, then disappear.
Installed new "upgraded" blue seals over winter. Worked fine until about 1000 miles & 6-8 track days, then the same issue again.
Took valve seals off; 2 exhaust seals had the blue tops burned/eroded away.
Same problem also happened on a friend's 2008 Z06 with the stock seals.
Appreciate any hints on problem/solution(s).
