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davemccorkle's Avatar
 
Join Date: Dec 2007
Location: St.Louis, MO
Posts: 310
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Weber Jet Sizes for 2.7

Just wondering what the normal jet sizes are supposed to be for a 2.7 RS. When I had mine rebuilt 3 years ago the carbs were on a 2.4 and I feel that my car is running a little rich.

Thanks

Old 04-23-2011, 08:17 AM
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Join Date: Feb 2008
Posts: 1,438
I have the following which is a summary of three owners of 2.7 liter engines with sport cams, exhaust and compression:

Main venturis: 34mm
Emulsion tubes: F3
Mains: 150
Air correctors: 180
Idle jets: 55
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Paul Abbott
Weber service specialist
www.PerformanceOriented.com
Old 04-23-2011, 01:59 PM
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Location: St.Louis, MO
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Thank you
Old 04-23-2011, 03:33 PM
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Join Date: Jan 2002
Location: Chicago Metro
Posts: 718
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My car has a mild hot rod 2.7 configured as follows:
34mm venturies
57 Idle jets
145 Main
180 Air Corrector
F3 Tubes
BP7ES Plugs
PermaTune Ignition with Pertronix Ignitor.

It is a still a little rich at idle but i have found this to be the best overall setting for my car.

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Old 04-23-2011, 03:36 PM
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