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Author: Subject:  40IDF jetting
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posted on October 22nd, 2012 at 07:47 PM
40IDF jetting


I've got a pair of 40IDF webers I want to try on 1mm oversize 1800 type 4 with a mild cam.

Currently has 28mm venturi's in it
Any rough ideas on jetting for this engine? After lowdown torque as its in a Baja bug




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posted on October 22nd, 2012 at 08:00 PM



This helped me alot.

http://www.aircooled.net/vw-carburetors-jetting-102/ 

1.25 x body size for idles (40 x 1.25 = 50)
4.2 x vent size for mains (28 x 4.2 = 120




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posted on October 22nd, 2012 at 08:03 PM



I would lean toward 55 idles
120-125 on the mains should be close




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posted on October 22nd, 2012 at 08:15 PM



Thanks guys



65 Meyers Manx
68 Country Buggy (KO 367)
68 Country Buggy (KO 669)
68 Country Buggy (KO 789)
68 Country Buggy (KO 815)
68 Baja Bug
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