weber 40

[Andrew Howe]

Hi All

I am currently putting a set of webber 40s onto a standard 2Litre pinto.  Looking for advice regarding the vacuum i.e. can you blank off the vacuum pipe from the distributer...is it needed?

Thank you

[blue]

The vacuum is there to give better fuel economy at low throttle openings 

yes it can be blanked off but better to fit a vacuum less dizzy. 

[Andrew Howe]

15 minutes ago, blue said:

The vacuum is there to give better fuel economy at low throttle openings 

yes it can be blanked off but better to fit a vacuum less dizzy. 

Thanks for that.

[Foz]

I used to run twin 40s with a vacuum dizzy - I took a vacuum pipes from cylinders 2 & 3 into a small tank made from a piece of 22mm copper tube about 80mm long.  Out of the tank I took another vacuum hose to the dizzy.  This worked quite well with a standard camshaft. 

 

[Andrew Howe]

21 hours ago, Foz said:

I used to run twin 40s with a vacuum dizzy - I took a vacuum pipes from cylinders 2 & 3 into a small tank made from a piece of 22mm copper tube about 80mm long.  Out of the tank I took another vacuum hose to the dizzy.  This worked quite well with a standard camshaft. 

 

thank for that. We had to alter the water inlet on the manifold, a mate of mine said while he had manifold he could do what  you suggested. so thanks again,