vroom1776
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Here are the results of some calculations for flat head pistons with no valve cutouts I did a while ago... VH = volume of the head, i.e. size of the combustion chamber
Bore(mm),Extra_Piston_Height(mm),Displacement(cc),VH(cc),CR 94 0 652.3 87.0 8.5 (stock) 94 1 652.3 80.0 9.2 94 2 652.3 73.1 9.9 94 3 652.3 66.2 10.9 95 0 666.3 87.0 8.7 (lancer?) 95 1 666.3 79.9 9.3 95 2 666.3 72.8 10.2 95 3 666.3 65.7 11.1 96 0 680.4 87.0 8.8 96 1 680.4 79.7 9.5 96 2 680.4 72.5 10.4 96 3 680.4 65.3 11.4 97 0 694.6 87.0 9.0 (woodworker ?) 97 1 694.6 79.6 9.7 97 2 694.6 72.2 10.6 97 3 694.6 64.8 11.7
I posted similar calcs previosly, but there was a minor msitake in the comp ratio for a 94 mm piston and 1 mm taller.
uh let me check these again... I think these #s are okay,
VH is calulated by: VH = VHstock-ExtraPistonHeight*(PI*(bore/2)^2)
CR is calculated by: CR = (Displacement+VH)/VH
For the extra height pistons, this is saying that when the engine is as TDC, the piston will go above the cylinder and into the combustion chamber. If we go w/ over bore pistons, we also need to know if they will fit inside the combustion chamber, as well as if they will smack the valvies. (unless I don't get it)
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