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tomraycook · Joined: 27 Dec 2004 Posts: 10

I need to know the cfm on a weber carb 40 dcoe can not find it on the web
help.

Paul · Posted: Fri Dec 31, 2004 12:52 pm Post subject:

Welcome to the board!

40 IDF Weber 430 CFM or 44IDF 530 CFM

I'm still looking for my dcoe chart....
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

Paul · Posted: Fri Dec 31, 2004 1:04 pm Post subject:

40 mm DCOE is about 222 CFM per side or 444 CFM which is very similar to the downdraft version (IDF)
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

Joes924Racer · Posted: Thu Jan 06, 2005 1:24 pm Post subject:

I hear carbs really improve the performance of a na 924. I like the cis though its just the way it is.. though carbs would be nice to try
along with a ported polished head, performance cam, performance header, lightened flywheel, high CP pistons or a decked block &
balanced bottem end.

yea.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

Vince Ponz · Joined: 02 Nov 2002 Posts: 3581 Location: Florida

After all is said and done I think I get maybe 140hp from my car. Carbs, mild cam, duals, heavy duty valve springs, adjustable cam gear, 2 45 DCOEs, 9.2 pistons etc. It is a screamer at 3000 plus. Under not so good. Gas mileage about 15mph. Hard starting cold but manageable.

It is no where near as fast as my 79 931 Euro but nice and I like it. I will track it this year after a 2 year makeover including an engine rebuild. GT look a like.
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"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock