Weber jetting for 3.0 SC...

speedysimon · Post by **speedysimon** » Fri Feb 10, 2006 8:03 am

Does anyone know what the jetting is for a straight replacement of the CIS injection for a pair of Weber 40 IDA 3C/3C1 ?

I really need a starting point, but can only find settings for a 2.7...

Thanks in advance!

james911rs · Post by **james911rs** » Mon Feb 13, 2006 8:19 am

Hi you need to speak to Eike Heusen at Chatsworth Motor Spares on 01246 278633. He is the best kept secret in Porsche circles, he sets up loads of Weber race engines. Oh and did mine as well.

higs356 · Post by **higs356** » Mon Feb 13, 2006 11:20 pm

Bruce Anderson book says

40 IDA 3C
Use 34mm Venturi , F3 Emulsion tubes , 160 main jets and 175 air correction jets is the best setup to start with idle jets chosen by driver test but probably 60 or 65

He also says that it should be dynamo'd to optimize

One further note ...78/ 79 engines duistributor works fine with this setup but 80 and later needs modified (the advance curve is too short)

I've not done this but my engine is a 78 C3 so I'm keen to get feedback from anyone who has

speedysimon · Post by **speedysimon** » Tue Feb 14, 2006 5:54 pm

thanks for the advice - i'll call Eike tommorow.

stevieboy · Post by **stevieboy** » Tue Feb 14, 2006 6:10 pm

Sourthern Carbs in Wimbledon are very good as well.

0208 540 2723.

higs356 · Post by **higs356** » Wed Feb 15, 2006 10:27 pm

If Stevie's car is anything to go by ...yes they are

stevieboy · Post by **stevieboy** » Thu Feb 16, 2006 9:23 pm

Why thank you Higgs your a gent.

DDK - Die Deutschen Klassiker

Weber jetting for 3.0 SC...

Weber jetting for 3.0 SC...

webers