turbo cam

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Feb 10, 2005 | 03:42 PM

NICK YOSKIN

Thread Starter

Le Mans Master

Joined: Oct 2003

Posts: 8,863

Likes: 86

From: PA

St. Jude Donor '08

turbo cam

please give me your specs or what you believe will work.

i have 228 224 580 581 115 in my forged short block

reverse split is good and why is that?

thanks

Feb 10, 2005 | 06:30 PM

Yano

Drifting

Joined: Nov 2002

Posts: 1,587

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From: Colorado Springs CO

That is just about the exact cam that DYNO Sim suggested for the TT kit. You put in all the data, and do sample runs. It seemed to like that cam the best.

Feb 11, 2005 | 12:04 AM

QuickSilver2002

Melting Slicks

Joined: Mar 2002

Posts: 2,931

Likes: 2

From: Tx

Quote:

Originally Posted by NICK YOSKIN

please give me your specs or what you believe will work.

i have 228 224 580 581 115 in my forged short block

reverse split is good and why is that?

thanks

The idea is to prevent exhaust gas reversion by closing the exh valve earlier.

This follows the logic that a turbo car is going to have a fair amount of backpressure in the exhaust and that there will be a tendency to get a reverse flow of exhaust gasses back into the cylinder if you keep the valve open to long.

Turbo cams are tricky and I don't know enough to tell you what will work best. I've seen cams that are not suppose to be good turbo cams (like a split duration blower cam) make great power on a turbo car.

I do know that a simple (non overlap) single pattern cam will work pretty well with most turbo applications, but it gets confusing when you want to get every last drop out of it. I think some really high HP topend power guys even bleed boost with the cam in favor of chamber with less exhaust gas contamination.

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