Re: 40 V8 compression change all cylinders same time
Ideally you should use 3 stones, 30*, 45* and 60*. This enables you to position the final seat in the correct place, as well as give you control over the width of the seat surface. Google 3 angle valve job.
Curious, did you ever check all the valves for straightness, and potential head contact?
Happy to hear your on your way to getting it fixed. Let us know how it goes.
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