40IDF jetting

11CAB If ya got it....Baja it

4,674 posts · joined Aug 2002 · 22 Oct 2012, 7:47 pm

#927896

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

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
76 Baja Kombi Twincab

DubCty Slammed & Awesome Dubber

95 posts · joined Jun 2009 · 22 Oct 2012, 8:00 pm

#927900

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

Straight Cuts – The Best Preparation For A Wife!

vassy66T1 Wow ... are U reading this?

2,120 posts · joined Jun 2003 · 22 Oct 2012, 8:03 pm

#927901

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

11CAB If ya got it....Baja it

4,674 posts · joined Aug 2002 · 22 Oct 2012, 8:15 pm

#927905

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
76 Baja Kombi Twincab