I pulled my cylinder head due to low compression in cylinders 3 and 4.
It turned out that the head gasket was intact but the intake valves (I
believe
that the smaller ones are the intake valves) were chipped, with a small piece
missing from the bottom of each. Luckily I have a spare head (two heads ARE
better than one).
What would cause this? I did have some pinging and running on, but I didn't
think that it was that extreme. Do I need to retard the timing or switch to
a
higher octane gas?
Thanks as always!
Greg Rowe
78 Spitfire
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