Hello all, I'm looking for advice on vacuum take offs for both dizzy and servo when using bike carbs. I'm currently making my manifold to take the bike carbs for my pinto engined Exmo and i'm unsure whether to tap a port into no 1 cylinder inlet for the distributor and a port into no 4 for the servo, or, tap into all four inlets and go to a sort of balance tube with one end for servo and one end for distributor. See (very) crude sketch below. Has anyone had issues good or bad with either of these ways of vacuum take off.
Inlet1.bmp