Goobdog
15+ Year Contributor
- 163
- 6
- Jul 14, 2004
-
Louisville,
Kentucky
I lifted the head on my GSX and blew the headgasket so while I had the head off I decided to get it checked out. I took it to my machinist and he said the valves were never lapped in correctly and they didn't seal up. I took this car to they dyno before and it made a whopping 218 whp with a b16g, 3 inch exhaust, ported exhaust manifold, ported o2 housing @ 17psi. The afr was 11.4 which wasn't too bad. I was really disappointed in the car because my other car with only a 14b, 2 1/2 inch downpipe with the stock exhaust stuck inside of it and ported exhaust manifold made 243 hp @ 18psi with an afr of 11.4 also. Would those leaky valves cause that much of a power loss ? Should be a no brainer but i'm an optimistic person 


