Fuel system advice.
05-26-2023 | 06:38 PM
#11
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Joined: Feb 2001
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From: Virginia Beach
The wiring is pretty simple. You use a fuel pump safety switch (Holley) and wire the start circuit to the om-side of the switch. If there’s no oil pressure, the fuel pump is not on unless the starting circuit is energized.
05-26-2023 | 08:52 PM
#12
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Joined: Feb 2013
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I tried that Baker pump on a 900hp engine and it didn't work for me. It would be down to 3psi at WOT. They sent me the 15psi springs for it so I plumbed it with a return regulator and although it kept the pressure up, you could see every stroke of the pump on the pressure gauge(needle moving so fast it was a blur) and kept destroying gauges in just a few minutes of run time. I ditched the whole mechanical pump setup and installed a Weldon electric pump and went trouble free boating. I spent a lot of time, trouble and money trying to keep it simple with a mechanical pump. I wouldn't do it again. Weldon for the win.
A buddy had mechanical and elec fuel pumps on his Cig. The elec was nice to fill float bowls when needed and allowed for eng off fuel leak checks. A few years ago I was thinking abt using both, set up for redundancy (i.e. have elec operate if eng ign was on ( or oil press present) and fuel press was below a certain value). May still go that route some day.
Last edited by zz28zz; 05-26-2023 at 09:00 PM.
05-27-2023 | 09:55 AM
#13
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Joined: May 2020
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From: Wyoming
Quick Fuel 30-175QFT 175 GPH Bypass Billet Electric Fuel Pump (holley.com)
I ran this feeding two 850 cfm carbs when I was carbed....still have it in a box actually if you're interested...obviously it's electric but has a built in regulator so it was pretty compact which I liked. It was on a 468 with a 8-71 probably 750ish hp
I ran this feeding two 850 cfm carbs when I was carbed....still have it in a box actually if you're interested...obviously it's electric but has a built in regulator so it was pretty compact which I liked. It was on a 468 with a 8-71 probably 750ish hp
05-29-2023 | 05:37 PM
#16
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Joined: Nov 2007
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From: Cleveland, Ohio
I’ll probably catch some get for this, but:
I run an aeromotive A1000, lots of people don’t like them but I haven’t had any issues with the pump itself. It runs a return line back to tank, regulator set to 6 or 7 psi feeding two 850 holly hp carbs, 14-71s, supporting 1080hp. Works pretty good. Simple and clean. I have switched on the dash to run the pumps independently.
that would support what you are wanting to do.
I run an aeromotive A1000, lots of people don’t like them but I haven’t had any issues with the pump itself. It runs a return line back to tank, regulator set to 6 or 7 psi feeding two 850 holly hp carbs, 14-71s, supporting 1080hp. Works pretty good. Simple and clean. I have switched on the dash to run the pumps independently.
that would support what you are wanting to do.
