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Registered
Join Date: Jun 2004
Location: Rio Rancho, New Mexico
Posts: 1,325
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Trekkor,
I'm running a 2.7L with Solex cams and Webers at 5,000 ft elevation.
So what I run doesn't work well in a stock 2.7L at sea level.
At 5,000 ft. my engine is happy with 34mm venturi's, 145 mains, 50 idles, 200 air correction, and F3 emulsions.
This for a car used primarily for racing.
At sea level, street use I'd start with 32mm venturi's, 140/145 mains, 50 idles, 180 air correction, F3 emulsions.
I ran 32mm venturi's for a short time. The car ran well but it quit making power above 5500.
I run 10 degree's initial advance. Less at lower altitudes.
You may end up with slightly larger mains and idles if you are running cams and pistons.
The idle jet sizes control A/F mixture from idle to 3000rpm. The mains take over from 3000rpm up.
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DOUG
'76 911S 2.7, webers, solex cams, JE pistons, '74 exhaust, 23 & 28 torsion bars, 930 calipers & rotors, Hoosiers on 8's & 9's.
'85 911 Carrera, stock, just painted, Orient Red
Last edited by 2.7RACER; 07-24-2008 at 06:33 AM..
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