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Re: Detonation Problems
What's your compression pressure as measured with a compression gauge ? Although not a real gauge of compression ratio, it might help to know. You might have too much vacuum advance, about 10 deg vac advance may be all you can tolerate with high compression. You can buy a little cam thing that mounts on the vac adv screw to limit the vac advance amount. Unhook the vac advance and see what happens.
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