Carb Jets

CraigD · 10-17-2001, 09:07 PM

Hello,

I am new to this forum. I am looking for idle jets for my 71 911 T. The car has Zenith 40 TIN carbs and a hodge podge of Solex idle jets, 3 different sizes to be exact and 2 of the jets are damaged. I checked with Motor Meister and they don't have any although they once did. I am working on other leads but need a little help tracking these babies down. Roy at Motor Meister said I would probably need a 60 jet but I would be happy with 55 and ream them out if they are too lean.

Thanks for the help,

Craig

Zendalar · 10-17-2001, 10:45 PM

I have webers on 2.4T and I was told I would need 55 idle jets to carbs function properly. I have been running with 45 so far.

john walker's workshop · 10-18-2001, 07:31 AM

55s should do the trick. 45s cause lots of spitting and popping, especially on cold start and cold run, and acceleration would be boggy. for zenith jets, visit a VW shop or store. they're the same as what was used in VW solex one barrels. very common. use a jet gauge to size all jets, regardless of the number on them, as so many have been drilled oversize.

CraigD · 10-18-2001, 07:51 AM

Thanks for the input, I was wondering if VW jets would work and now I know. I actually tried a VW shop yesterday but they didn't have any Solex jets. I'll try some others and see what I can find.

Thanks again,

Craig

CraigD · 10-22-2001, 10:24 PM

Just thought I would let everyone know I found the jets I was after, 55 idle jet. Contacted Gene Berg in So Cal who referred me to an independent Porsche garage. Picked up 6 brand new 55 solex idle jets. I can't wait to fire it up in the AM to see what a difference they make. I checked the old jets and they had not be resized so I truly had 3 different size jets.

Craig