Compression test
From Crankshaft Coalition Wiki
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==To check compression:== | ==To check compression:== | ||
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*[http://www.uempistons.com/calc.php?action=comp2 KB/Silvolite DCR calculator] | *[http://www.uempistons.com/calc.php?action=comp2 KB/Silvolite DCR calculator] | ||
*[http://www.rbracing-rsr.com/comprAdvHD.htm RSR DCR calculator] | *[http://www.rbracing-rsr.com/comprAdvHD.htm RSR DCR calculator] | ||
| − | + | Some dynamic compression rtatio calculators (like KBs) ask for an additional 15 degrees of duration be added to the IVC @ 0.050" lift point figure. This works OK on older, slower ramped cam lobes, but the faster lobe profiles may need to have 25 degrees or more added to be accurate. | |
| − | + | If the intake valve closing (IVC) point isn't known, it can be calculated: | |
# Divide the intake duration by 2 | # Divide the intake duration by 2 | ||
# Add the results to the lobe separation angle (LSA) | # Add the results to the lobe separation angle (LSA) | ||
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