But your distributor will be looking for ported vacuum. Mine works fine with the ported vacuum from both IDFs through a ‘T’ into a vapour can.
Google 104 pistons, I can't find and real life negativity. - the walls are thick, they overhang what's left of the case and are not going to distort. I get to use a stock cranktoo, but with hindsight I should have gone for it with a stroker crank - in for a penny.
Ok.so on both idfs there is a small pipe which can be used for vacuum? I am using the left one looking into the engine room which is maybe not enough?
He said that it could save fuel if i do what im planning on doing,he did mention it when it was dynoed but I sort of felt it was ok without the vacuum advance.
Each IDF has one vacuum advance port, on the right barrel looking at the throttle pump, and there are two more vacuum ports at the base of each barrel, normally not used. Your SVDA distributor will be looking for ported vacuum (from the right barrel). It will, or should, work from one carb but obviously it will only be receiving a signal from one cylinder and it will pulse with the cylinder cycle – but that is better than nothing. I use both carbs simply connected with a T piece (from a screen washer hose).
I think accuspark/powerspark now do a black box aswell? I think if i was heading down that route id go for crank fired ignition and throttle bodies Jenvy now do a set of throttle bodies for the type one engine.
Jenvey do an IDF throttle body anyway, so all you need is the IDF manifolds and linkage and you're away.