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Old 09-24-2012, 07:56 AM
ap72 ap72 is offline
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Originally Posted by Quarter Flash View Post
Thank you for that information. If anyone knows what ratio I am starting out with for sure it would also be helpful

actual vs "advertised" compression can vary quite a bit for older cars. just meausre your piston volume, deck clearance, gasket thickness, and head volume and calculate your own compression.

If you don't have a mic you can measure your volume above the piston by bringing it to TDC and sealing the edges with a thin layer of petroleum jelly. Use a common medical syringe to measure the volume- available at any corner drug store.

be sure to have it level and seal the top with either a hard plastic sheet or an old CD.

These are common cheap tricks that most of us use around here.
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