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Old 11-15-2012, 05:44 PM   #3
Magus2727
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Not sure on that calculation. C-F-M has a calculator to use when you are looking at their Cometic's head gasket. not sure what all the numbers should be for a stock block and or head. Stock compression is 10.2:1. 0.50 is a large (think most are 20-30 thousandths) but not sure if you would get a full extra number on the left side.

I think at 0.050 you also are making the Zetec an interference type motor. I have asked before but dont recall ever getting an actual hard number of if you remove X material.

I think you will want a tune with that large of a change of compression also.
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