Blown up true or false - Third Generation F-Body Message Boards

MitchellDeMoor · 08-04-2009, 10:58 AM

Hello, I am building a '91 Camaro right now. I will have a stock '76 350 with an Edelbrock 600. I will be using the stock fuel pump from the '91 and a Mallory 4309. I will be using a Jegs fuel pump block off plate for where the old fuel pump sat on my 350. I posted pics on Facebook of all the parts I would be using on my build. I had a picture of my Jegs fuel pump block off and my freind saw it and wrote this;

Freind; "are you using the stock electric fel pump? if so you are doing a big mistake alot of cars got burned in my country because of the same thing the electric fuel pump has atleast 45psi and when you are using a fuel pressure regulator it drops the pressure to 4 psi ad the electric fuel pump get hot and blow up I really dont recommend using electric fuel pump on carb just change the cam and use mechanical fuel pump"

I then wrote

Me; "Are you sure? A lot of people do what I am doing in the States. I am going to be using the stock fuel pump with a Mallory 4309?"

He then wrote

Friend; "well its up to you I saw alot of caprice's 85,86,87,,etc burnd,few C4's,2 fox body mustangs it wont cost you if you buy junkyard cam on carb'd engine it will cost you around 20bd 200 dirhams I'd rather spend more time on doing something I will be on safe side than spending money on parts I will throw later"

Is this true or just b.s.???????

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TraviZ · 08-04-2009, 11:30 AM

bs, fuel pumps provide flow, not pressure so as long as your regulator is sufficient enough to send all that fuel back to the tank then you are ok, but if you cant seem to get low enough pressure, you will know why. nothing is going to blow up or burn down though.

Gumby · 08-04-2009, 12:38 PM

Maybe they are using dead heads.

If you got a FP or reg wit ha return to send excess flow back to the tank, it don't matter.

camaronewbie · 08-05-2009, 12:37 AM

Mine's been running for 2 years with no problems!

keeslinger31 · 08-05-2009, 12:55 AM

Wouldnt it act as a restriction in the fuel lines just like a clogged fuel filter and burn up the pump? or are the return lines efficient enough?

InfernalVortex · 08-05-2009, 01:25 AM

These people taht are burning up their cars must not be using return lines or something. If you use a return line I would think it would make it a LOT easier on all the parts involved, and the 4309 is a nice regulator. One of the reasons I got a 4309 was because it wasn't one of those cheap crappy ones, I wouldnt trust a cheap crappy one not to leak at some point.

1A Dan · 08-05-2009, 01:58 PM

You should have no issue if done correctly with a return-style regulator. These regulators will not cause the pump to work any harder or differently than it did to begin with. dead-head style will kill a pump quickly though. Doing it right may cost a couple dollars more up front, but you'll be glad you did

mattmerritt89 · 08-05-2009, 11:49 PM

That makes no sense fuel running threw the pump is what keeps it cool and from burning it up. People that let their cars run out of gas are the ones that are going to have burnt up pumps. And to where is the guy located I Know some places have less than quality fuel.

one92rs · 08-06-2009, 02:51 PM

as said before pumps provide flow. restrictions provide pressure. with a return style regulator you are controlling the restriction. make sure that all fittings used have at least a small indention or raised bump so that in any case the line will not slip off when clamped.

MitchellDeMoor · 08-08-2009, 02:03 AM

Thats exactly what I thought! Thanks guys!