Dizzy to carb connections

froggy · Jul 10, 2008

Tomorrow (Friday) is a big('ish) day, me and a mate dropping the engine (my 1st time) and fitting a weber progressive carb and manifold (i know but no comments just yet! :wink: ) and a new single quiet pack exhaust, but i have a twin can stock dizzy and the weber only has 1 vac inlet on the rear.
Which side of the dizzy is piped in? Front or Back?
Do i just block off the other pipe?

Joval · Jul 10, 2008

I'm not sure if that carb/dissy combo will work - it's a dual vac dissy?

froggy · Jul 10, 2008

Yeah its a dual vac, surely i just block off the retard?

Clarkson46 · Jul 10, 2008

The problem is where do you set the timing. The dual vac cans were supposed to have been recalled by VW years ago. You may find problems with the advance curve.

froggy · Jul 10, 2008

According to the manuals the timing is set at 7.5ATDC but it ran like a peice of crap so i made a few enquiries and was told just to set it as a single vac 5BTDC and it runs fine so dont think timing is an issue its just a case of which hose do i plug?

Tofufi · Jul 10, 2008

froggy said:
According to the manuals the timing is set at 7.5ATDC but it ran like a peice of crap so i made a few enquiries and was told just to set it as a single vac 5BTDC and it runs fine so dont think timing is an issue its just a case of which hose do i plug?

Think you have the two numbers mixed up there

Should be 5 deg ATDC for a dual vac one, 7.5btdc for a single vac .

Can't help you with the rest though. Good luck. 8)