calc questions
Posted: May 10th, 2010, 6:35 am
Hello,
I have read through all of the basics threads a couple of times now, and thought I had a pretty good understanding of the math involved in building a stroker.
Then I downloaded Andreas calc and the math just doesn't seem to match. For example on paper I came up with a cr of about 9.2 using just the 258 crank and rods with everything else stock. Andreas calc came up with a cr of 11.4 on a thicker head gasket! And after I monkeyed around with other values like decking/plaining/dishing/boring it to get to a 4.7L displacement the calc shot up to a cr over 45.1!
I can't afford racing fuel, but I can afford to be better educated
What am I not understanding about the calc?
I have read through all of the basics threads a couple of times now, and thought I had a pretty good understanding of the math involved in building a stroker.
Then I downloaded Andreas calc and the math just doesn't seem to match. For example on paper I came up with a cr of about 9.2 using just the 258 crank and rods with everything else stock. Andreas calc came up with a cr of 11.4 on a thicker head gasket! And after I monkeyed around with other values like decking/plaining/dishing/boring it to get to a 4.7L displacement the calc shot up to a cr over 45.1!
I can't afford racing fuel, but I can afford to be better educated
What am I not understanding about the calc?