Camshaft/Compression Ratio relationships
(Created page with 'This article is taken from a thread where the Scandanavian OP was asking the following.... "How to Calculate wath Cinda Compression ratio a cam needs to work optimally and soo o…') |
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*The final word in cam selection should always be determined by the grinder for your specific application. It's a free service offered by all *cam manufacturers. | *The final word in cam selection should always be determined by the grinder for your specific application. It's a free service offered by all *cam manufacturers. | ||
| − | *OK, now with that disclaimer in place, I will attempt to help you see how the SCR plays out with the cam timing. There may be a mathematical *formula, but I'm not aware of it, so I just use what information I have available to me and try to figure it out from there. | + | *OK, now with that disclaimer in place, I will attempt to help you see how the SCR (static compression ratio) plays out with the cam timing. There may be a mathematical *formula, but I'm not aware of it, so I just use what information I have available to me and try to figure it out from there. We will not get into DCR (dynamic compression ratio) here. That's a whole other subject for another time. |
*The main point to consider is the intake closing point after bottom dead center. That's what controls the amount of cylinder pressure the *motor will make. | *The main point to consider is the intake closing point after bottom dead center. That's what controls the amount of cylinder pressure the *motor will make. | ||
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