Engine cutting out while braking or cornering

[Lincolnmania]

this one is 120 gph

http://store.summitracing.com/partdetail.asp?autofilter=1&part=CRT-M6588&N=700+4294925239+4294839053+4294891547+4294908331+4294840126+4294891680+215+4294891494+115&autoview=sku

[1987cp]

Right, that's the 6588 I was commenting on above ... the question being, is that enough higher flowing than stock to make a difference? 120 gph sounds small, but that may be because I usually only hear flow rates quoted for super-high-capacity EFI pumps.

[1987cp]

Correction on above: I got smart and looked at some of the other pumps Summit lists, and noticed that a lot of the other under-$100 ones are only 80 gph. Even the Edelbrock Victor Series is only 130gph! So I guess I need to see whether I can score one of those Carter pumps locally for cheap or if it has to wait till I piece together another Summit order.

EDIT: I found flow rates listed at NAPAonline.com.

For a 289-4V Mustang it lists Pressure Rating: 5 lb - 7 lb, Gallons Per Hour: 23

And for '79 LTD with 351W-2V: 6.5 lb - 9 lb, Gallons Per Hour: 40

And.... for the '87 "high output" return-style pump: 6.5 lb - 8 lb, Gallons Per Hour: 30!!!!


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Dang!!!

[Pirate]

Correction on above: I got smart and looked at some of the other pumps Summit lists, and noticed that a lot of the other under-$100 ones are only 80 gph. Even the Edelbrock Victor Series is only 130gph! So I guess I need to see whether I can score one of those Carter pumps locally for cheap or if it has to wait till I piece together another Summit order.

EDIT: I found flow rates listed at NAPAonline.com.

For a 289-4V Mustang it lists Pressure Rating: 5 lb - 7 lb, Gallons Per Hour: 23

And for '79 LTD with 351W-2V: 6.5 lb - 9 lb, Gallons Per Hour: 40

And.... for the '87 "high output" return-style pump: 6.5 lb - 8 lb, Gallons Per Hour: 30!!!!


----------------------------------


Dang!!!

I think the 80 gph unit might work okay....but if funds are available, I'd go with a 120GPH unit, and put a good regulator on it, knocking it down to 4-5 psi.

Oddly enough, a lot of guys use the Holley 'Red' fuel pump as a cheaper electric pump, as it pushes about 4-5 psi, and works pretty good for mild Chevy 350's without a regulator.

[grandpaslincoln]

Does the vic have an inertia switch for the fuel pump? Another thing to look at.

[Pirate]

Does the vic have an inertia switch for the fuel pump? Another thing to look at.

I don't know if a carbed car would have an inertia switch....

[Southern_Pride]

With a mechanical pump it should not.

[1987cp]

Does the vic have an inertia switch for the fuel pump? Another thing to look at.

Going electrical has crossed my mind, but staying mechanical would probably be a good deal simpler and might even be cheaper. I'm not enthused about the idea of having to run a regulator, but I'll try to figure out a system that will work for the least effort and $$$. (This was the car that I had intended to do absolutely nothing to and just drive it!)


Pirate, another question about mechanical pumps, if they're a nonreturn style and run without a regulator, what provisions do they have so that they don't just sit there and flood the engine?

Also, I saw something about this pump having a "vapor return" provision; I had assumed it returned unused liquid fuel to the tank like a normal regulator.

[Pirate]

Going electrical has crossed my mind, but staying mechanical would probably be a good deal simpler and might even be cheaper. I'm not enthused about the idea of having to run a regulator, but I'll try to figure out a system that will work for the least effort and $$$. (This was the car that I had intended to do absolutely nothing to and just drive it!)


Pirate, another question about mechanical pumps, if they're a nonreturn style and run without a regulator, what provisions do they have so that they don't just sit there and flood the engine?

Also, I saw something about this pump having a "vapor return" provision; I had assumed it returned unused liquid fuel to the tank like a normal regulator.

Whatever pump you choose....they will not pump (or shouldn't, anyway) past what they are rated for. I think that you could get away with using the 80 gph pump and not have to run a regulator....the 120-gph pump will require one, methinks. So far as 'all that unused fuel'....since the pump won't pump past its pressure rating....it simply doesnt pump fuel if there is the max amount of pressure already in the lines.

So far as a regulator goes....I'd use one and a pressure gauge in addition, as I don't like running anything past 4.5-5 psi to a carb, as anything above that is hard on the needle and seat assembly.

[grandpaslincoln]

D'OH!

[Pirate]

D'OH!

Hey, look! It's a CVN member falling off of a roof!






There, Jon, I don't think anyone noticed.

[1987cp]

:lol:

Return-style regulators are EXPENSIVE .... wonder if I should consider eliminating the return line altogether? I had assumed it would make things happier, but I know most mechanical-pump systems don't use one ... deadhead regulators seem to be a lot cheaper, starting at about $20 at Summit ( http://store.summitracing.com/partde...5&autoview=sku ), so that wouldn't be too awful combined with the $25 Carter fuel pump and a cheap gauge to leave underhood. Something like this, maybe? http://store.summitracing.com/partde...5&autoview=sku Unless one can easily buy cheap gauges that read up to only like 8 or 9 psi ....

[Pirate]

:lol:

Return-style regulators are EXPENSIVE .... wonder if I should consider eliminating the return line altogether? I had assumed it would make things happier, but I know most mechanical-pump systems don't use one ... deadhead regulators seem to be a lot cheaper, starting at about $20 at Summit ( http://store.summitracing.com/partde...5&autoview=sku ), so that wouldn't be too awful combined with the $25 Carter fuel pump and a cheap gauge to leave underhood. Something like this, maybe? http://store.summitracing.com/partde...5&autoview=sku Unless one can easily buy cheap gauges that read up to only like 8 or 9 psi ....

Just eliminate it. It's truly not needed in this arrangement.

[gadget73]

Right, that's the 6588 I was commenting on above ... the question being, is that enough higher flowing than stock to make a difference? 120 gph sounds small, but that may be because I usually only hear flow rates quoted for super-high-capacity EFI pumps.

EFI pumps are usually rated in liters per hour though, so its not as much flow as you might think.

[Pesty351]

Here you go 500 gph will that be enough?