This form is designed to help
you figure out engine specs for all engine types - not
determine the deck height required for a 2007cc engine
with a compression ratio of 8.5:1, and cylinder heads
with a combustion chamber volume of 56cc, plug in the
following numbers: bore=90.5mm, stroke=78mm, combustion
chamber volume=56cc and desired compression ratio=8.5.
Click the 'deck height' button and you'll be given the
answer: 0.067" (or 1.69mm).