Fuel System Upgrades for Blow Thru carb with Turbo's

[JeffMcKC]

I hope they have those fixed, I was going to run one on Drag Week till I checked into them and then say all the "Rebuilt" ones on Ebay

[Beagle]

Can be regulated from 5-60 lbs.

do the junkyard thing... two electrics, switch the second one on at any positive manifold pressure? Hobbs switch.

Boost reference, I thought you could tap the atmospheric vent on the pump and put some fish tank air line sized tubing on it from a manifold port? I've read it before, never done it. Seems like you would need some sort of check valve to keep it from putting a vacuum on it?

[CDMBill]

The diagram Scott linked to on his first Racepumps post showed the boost reference line in green. The pump list indicates those that have the #4 idle bleed line to prevent vapor lock. Thi net as I read is that this is essentially a dead head system with the #4 bleed to abate heat soak by the carb. The Racepumps appear to be incredibly elegant engineering solutions. I have no direct experience with them nor have I seen one in use so I can't comment on they work in the real world of street driving and racing we all do.

[CDMBill]

The Aeromotive controller takes an RPM input that you share off the Tach wire. Then you set it to come on above a selectable RPM. We hooked it up on Bill's car and had it running the first time I was out there. I didn't know until recently that he hasn't been running it a while. I was mostly interested in its' compatibility with the Tach Output on the EMS-pro Bill uses, and it worked like a champ, driving a tachometer, a fuel pump controller - and something else I am forgetting (I know it was 3 devices).

The tach output of the EMS-pro allowed me to drive the Stewart Warner digital shift light tach, the Aeromotive controller and an MSD tach drive adaptor for the factory dash tach. It all worked great. I also pulled the MSD tach adapter when we were chasing RFI noise in the input signal to the EMS. That was the single biggest issue we faced with the EFI conversion. The MSD tach adaptor makes a whine/buzz you can actually hear with the car running, which is to say its loud.