Any one have any imput on the new style vacuum pump by Aerospace? I purchased one and can't get it to create anymore than 2 hg in the traps and when you let off it will go to 7 hg but no more. Its on a BBC that is injected on alcohol with low tension rings. The engine came out of another car that had a GZR pump on it and they had no problem creating up to 15 hg in the traps with it. It runs strong, 7.77 in the 1/4. I even put a test fitting in the pump and dead headed it to suction at an idle and the most it would suck was 10-12 hg. I tried using oil added to the suction and it didn't make a difference.
Any suggestions POPPER
