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copbait73 copbait73 is offline
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Join Date: Nov 2003
Location: Chesterfield IN
Posts: 1,337
Thank you,
Can you get the valve sizes? He's blown out the exhaust ports. Heads are now
36MM intake (vs tiny 32MM) and exhaust 40MM (vs tiny 34MM).
Here is the comparison from Bruce's book:
Valve sizes are the same for the street TURBO and racing TURBO, Intake 49MM, exhaust 41.5MM (thats a nice starting point) but the street turbo has 9MM smaller intake ports and 7MM smaller exhaust ports. What you measured sounds extreme (and it is in comparison to street) however they are still less than the all out racer TURBO's ports.
Goran, have you experienced "ported" street TURBO motors?

Last edited by copbait73; 02-17-2008 at 12:45 PM..
Old 02-17-2008, 12:35 PM
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