MileHighLude

Every website that you go to usually has 3 levels of cams and then they have nitrous or turbo/supercharged cams.

IS there that big of a differece? Are the nitrous cams only benificial when you are spraying? Are the Stage 2 cams not good with nitrous?

parker69

I believe the main difference in a "turbo" cam and a performance aftermarket N/A cam has to do with the valve overlap. (Turbo cams have less than the N/A cams) Apparently stock honda cams have a decent amount of overlap anyhow. (Overlap is the period that both valves are at least somewhat open at the same time) I'm no engine builder so I'm not sure exactly why a turbo setup likes less overlap than a N/A motor. Perhaps it has something to do with the higher boost levels on a turbo setup- i.e. the exhaust valve doesn't need to stay open as long cause the air is moving faster?? and maybe when the exhaust valve stays open as long as an N/A cam some of the boost is lost??? anyone with a better explanation feel free to help me out, heh

BTW here is a cool website of how cams work, really need video on it: http://www.howstuffworks.com/camshaft1.htm

JDM Lude

valve overlap makes you loose boost w/ a turbo. the boost goes in, and leaks out the exhaust in the same stroke.

__________________