Question:Intake/exhaust valves for m28/21 engine and late 16v
03-14-2017 | 02:14 AM
#1
Thread Starter
Burning Brakes
Joined: Apr 2013
Posts: 972
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From: North Italy
Question:Intake/exhaust valves for m28/21 engine and late 16v
I was told that m28/21 engines and late 16v engines have bigger valves 45mm/37mm Vs early engine with 43/34mm. True? I cannot find this information anywhere. Thank you.
Francesco
Francesco
03-14-2017 | 07:51 AM
#2
Nordschleife Master
Joined: Jul 2003
Posts: 7,674
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From: Minneapolis, Minnesota
It's hard to generalize with all the engines Porsche made but, yes, the Euro S engines (m28.11/12/21/22) got larger valves than some other 16V engines. The "S" valves are shared with 944 engines.
