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Eye of the Toiger
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Can I use manifolds 35/46mm on 40mm webers?
Can I use manifolds 35/46mm on 40mm webers?
what is the performance impact? Matt
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http://www.aircooled.com.au 1973 911 RSR clone powered by 77 3.0 turbo |
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09-22-2006, 01:01 PM
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Eye of the Toiger
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bump
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http://www.aircooled.com.au 1973 911 RSR clone powered by 77 3.0 turbo |
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09-22-2006, 01:53 PM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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You betcha,...
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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09-22-2006, 03:14 PM
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Super Moderator
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THey will fit.
However I've not measured the performance impact. Certainly you'd get some turbulence transitioning from the carbs to the manifolds, I imagine this would manifest itself primarily under high RPMs. You'd essentially have a "stall zone" in the air flow...
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Chris ---------------------------------------------- 1996 993 RS Replica 2023 KTM 890 Adventure R 1971 Norton 750 Commando Alcon Brake Kits |
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09-22-2006, 03:23 PM
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Registered
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Location: Portland Oregon
Posts: 7,007
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Works fine, and helps contain reversion when using race-type cams.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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09-22-2006, 03:29 PM
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Never thought of that Steve but I guess it would have an effect like a tuned pipe on reversion, interesting...
Anyone down flow-bench tests on a step like that?
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Chris ---------------------------------------------- 1996 993 RS Replica 2023 KTM 890 Adventure R 1971 Norton 750 Commando Alcon Brake Kits |
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09-22-2006, 06:00 PM
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porsche
1970 Porsche 911 S 
