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Fuel pressure
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DRR Trophy
posted
APD 1150
Magnafuel 500
Magnafuel 2 port regulator
582 ci Bbc

Decided to put my alcohol carb on and try it, what should fuel pressure be set at, I've always ran belt drive in the past . I figure 6.5 -7 pounds??...??
 
Posts: 29 | Location: Peterman, AL | Registered: November 16, 2010Reply With QuoteReport This Post
DRR Trophy
Picture of CH.CRAFT
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I HAVE ALWAYS RUN 7 LBS. I THINK AROUND 8 LBS., MAYBE A LITTLE HIGHER THE PRESS WILL OVERCOME THE FLOATS. SOME OF THE CARBURETOR GURUS WILL CHIME IT WITH BETTER INFO.
 
Posts: 176 | Location: SOUTH LOUISIANA | Registered: December 01, 2009Reply With QuoteReport This Post
DRR Pro
Picture of Canted Valve
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You will likely be running the biggest dia. needle & seat to accommodate the volume requirements of alcohol. The larger the needle & seat the easier it is to unseat it. Thus you will likely want to start out running the pressure on the low side of the 6 to 8 psi generally recommended, and go from there.



Illegitimi non carborundum
 
Posts: 1307 | Location: OKC, OK | Registered: February 15, 2008Reply With QuoteReport This Post
DRR Trophy
Picture of CH.CRAFT
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[QUOTE]Originally posted by Canted Valve:
You will likely be running the biggest dia. needle & seat to accommodate the volume requirements of alcohol. The larger the needle & seat the easier it is to unseat it. Thus you will likely want to start out running the pressure on the low side of the 6 to 8 psi generally recommended, and go from there.[/QUOT

GOOD POINT, THE APD ALKY CARB WILL HAVE THE LARGE NEEDLE AND SEAT.
 
Posts: 176 | Location: SOUTH LOUISIANA | Registered: December 01, 2009Reply With QuoteReport This Post
DRR Trophy
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I ran 4 psi at idle, 9-11 at wot. Belt driven pump, bypass regulator. Never any issues
 
Posts: 86 | Location: st louis mo | Registered: April 15, 2012Reply With QuoteReport This Post
DRR S/Pro
Picture of The Bozman
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getting enough fuel in the bowls with an electric pump. If you have the 1.64's it should help. I would run as much fuel pressure as the needle and seat will handle, that is why we run belt driven pumps typically.


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Posts: 2820 | Location: Rockwall, Texas | Registered: June 25, 2002Reply With QuoteReport This Post
DRR Sportsman
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I have run a 950 bolaws alch. carb with a magnfuel 500 pump and dead head reg. at 8 psi. 950 quickfuel gas I run at 7 psi. this is on a small block. I can also run a belt pump and have seen 0 et or performance gains from belt to electric.

ep- not the same as OP but kind of.
 
Posts: 206 | Location: dodging double wides... | Registered: November 28, 2007Reply With QuoteReport This Post
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