How does a split duration cam work?

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Nov 26, 2001 | 02:06 PM

LIL SS

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From: San Jose area

How does a split duration cam work?

I am wondering exactly what a split cam is and how it works resulting in power. I was thinking about this on the way to work. I think there are people here that could explain this to me..

I’m taking a guess (hopefully the logical guess here). <img src="images/icons/frown.gif" border="0"> Split duration would have 2 different amounts of duration, Intake versus Exhaust? One being slightly longer.. Which has the longer duration? Or does it depend on the cam? How would this result in better performance?

Also what are the advantages and disadvantages of a split cam? <img src="images/icons/confused.gif" border="0">

Thanks for helping me fill my head full of knowledge. <img src="graemlins/fluffy.gif" border="0" alt="[Fluffy]" />

Nov 26, 2001 | 02:16 PM

Bad Habit Bird

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From: The Woodlands, TX

Re: How does a split duration cam work?

You are right about having different durations on intake vs. exhaust. Usually the exhaust side has more duration than the intake which helps get the burnt fumes out of the combustion chamber faster, which results in more power.

More exhaust duration will work well with n2o applications. <img src="images/icons/grin.gif" border="0">