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Registered
Join Date: Jul 2005
Location: Cleveland, OH
Posts: 1,367
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Race motor -- ratio valve seat ID to valve OD
Anyone have guidance here?
...and how about valve seat ID to intake port ID? |
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09-21-2020, 08:55 AM
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Registered
Join Date: Oct 2002
Location: Phoenix, AZ
Posts: 484
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Way too many variables, one size does not fit all. Engine rpm, displacement, compression ratio, valve size, carb, EFI, turbo, all play a role in determining the appropriate size. And porting a cylinder head is not as simple as opening the port and valve seat to a certain diameter. Better to discuss your goals and expectations with a good head porter like Bill at Xtreme. He will know what works and be able to get you close to a winning combination.
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09-21-2020, 04:22 PM
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