Quote:
Originally Posted by tooski
The info I have read on the forums indicate that no way a cam with the specs of the HC-02 should be causing detonation at 9.77. Unless it was poorly installed. Which it was. By me. At the time (mid 80's) I had no idea about cam degreeing. Turns out it ended up 4° retarded. I am thinking that would significantly affect the DCR leading to detonation.
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Backed up 4° would have less effective stroke. Advancing is what builds higher cylinder pressure.
Need to get it opened up and see what's going on.
I suspect the detonation problem you had was from the little ridges on them 8VR's heating up and acting like a glow plug. Higher cylinder pressure means higher cylinder temperature. And your 9.77 SCR combo was just right for heating them 8VR's up.
Clay