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hi all just in middle of making  inlet manifold for bike carbs for my 2l pinto do i need a pipe in inlet manifold for vacuum pipe from distributer 

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if your dizzy has vac advance then yes you will need a vac take off on the manifold to get a stable vac for the advance you will need a take off from all four inlets going to a balance bar and then on to the dizzy a lot of fafing around easier to get a dizzy with no vac advance 

Edited by tractor
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Or just ignore the vac advance. It’s there to improve mpg and very low speed running. I doubt if in practice you would notice any difference. 
I assume you haven’t got a brake servo?

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