MG Sports Cars

engine swaps and other performance upgrades, plus "factory" and Costello V8s

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johnsfolly
John Deikis
Chelsea, MI
(12 posts)

Registered:
08/10/2015 09:05PM

Main British Car:
1979 MGB Roadster Buick 215

Fuel Pump Advice
Posted by: johnsfolly
Date: September 18, 2022 04:54PM

I posted this on MG Experience but got no responses. I hope it's not a "what brand of oil should I use" type of question. Let's see...

I have an unknown fuel pump (labeling is long gone) on my 215 roadster conversion. It's really loud. Have long considered replacing it with something that might be quieter. A couple of nights ago, I turned the key and the pump gave out a distressing wheezing sound like a sick cat. After about 5 seconds, it came back with its usual loud hum-buzz thing. Made me uneasy. Made me a bit more motivated to find something else.

What might you guys recommend? 215/3.5 with an Edelbrock 4bbl. Not running a fuel pressure gauge, so I have no idea what the pump is putting out but the car generally has run well.

Thanks in advance.

JohnD


Spitfire 350
Phil McConnell
Perrysburg, OH (Toledo area)
(247 posts)

Registered:
01/11/2010 09:19PM

Main British Car:
74 Spitfire 350Chevy

authors avatar
Re: Fuel Pump Advice
Posted by: Spitfire 350
Date: September 18, 2022 05:34PM

John,
I would suggest a universal 12v, 3-6psi fuel pump from Amazon. $20 or less.


88v8
Ivor Duarte
Gloucestershire UK
(993 posts)

Registered:
02/11/2010 04:29AM

Main British Car:
1974 Land Rover Lightweight V8

Re: Fuel Pump Advice
Posted by: 88v8
Date: September 19, 2022 05:19AM

The Edelbrock MIcro is pretty quiet, and makes around the right pressure. [www.carid.com]

I would always run a pressure regulator with gauge. A 5psi feed is the starting point for carb tuning.

If you have SUs, they want 2.6psi, so a lower pressure pump..

Ivor


johnsfolly
John Deikis
Chelsea, MI
(12 posts)

Registered:
08/10/2015 09:05PM

Main British Car:
1979 MGB Roadster Buick 215

Re: Fuel Pump Advice
Posted by: johnsfolly
Date: September 19, 2022 12:50PM

Thanks. Any idea of any of these pumps are capable of sufficient lift to be able to mount it in the engine bay instead of back next to the tank?


DiDueColpi
Fred Key
West coast - Canada
(1333 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
I really thought that I'd be an action figure by now!

authors avatar
Re: Fuel Pump Advice
Posted by: DiDueColpi
Date: September 19, 2022 02:07PM

In general you want an electric fuel pump as close to the fuel source as possible. It should also be mounted below the lowest fuel level.
This is to prevent vapor lock in the supply line.
A fuel pressure regulator is also a good idea. Mount it as close to the carb as is reasonable.
The best style of regulator is a "return" type. These regulators return the excess fuel back to the tank, ensuring a cool, vapor free fuel supply to the carb. They also extend pump life as the fuel doesn't deadhead and heat up in the pump.
A pressure gauge mounted at the regulator lets you set and monitor your regulator.
Never mount a fuel pressure gauge inside the cab.
The gauges are fragile and prone to leakage. I don't leave a fuel gauge permanently mounted anywhere. Use it to set up pressure and check occasionally. Then put it away and plug the port.
Lastly install a fuel pump cut off switch. This shuts down the pump in case of an accident.
Any pump that looks like the old Carter pumps with the motor sticking out of it is going to be noisy. So pick something more modern like the Holley mighty mite. Clones of it are for sale cheap on Ebay. But buy 2 because they contain chineseium.

Live like you mean it
Fred


Spitfire 350
Phil McConnell
Perrysburg, OH (Toledo area)
(247 posts)

Registered:
01/11/2010 09:19PM

Main British Car:
74 Spitfire 350Chevy

authors avatar
Re: Fuel Pump Advice
Posted by: Spitfire 350
Date: September 19, 2022 03:45PM

Fuel pumps push better than they pull, but I have mounted them in the engine bay with no problems. Are you going to put the replacement pump where the current one is?


302GT
Larry Shimp

(226 posts)

Registered:
11/17/2007 01:13PM

Main British Car:
1968 MGB GT Ford 302 crate engine

authors avatar
Re: Fuel Pump Advice
Posted by: 302GT
Date: September 20, 2022 07:34PM

I have had reliability problems with aftermarket electric pumps, with the exception of Facet cylindrical pumps. They are quiet, come in may different pressure ratings, and are prefect for a 215 V8. I have two in parallel for my 302 to get sufficient fuel delivery...

They are a direct descendent of the Bendix pumps and were standard equipment on classic, Ferraris, Maseratis, Alfa Romeos, etc. I have two 30 year old Facet pumps on my two Alfas I restored 30 years ago and they are prefect. One Alfa actually came with the original 1959 Bendix pump and it still worked once I removed the gelled fuel with lacquer thinner. These pumps are designed without any rubber seals.

The Carter electric pump is also very reliable but very noisy. It was developed for the military in the 1950's and like a modern fuel pump the motor is immersed in the gasoline; it also has no rubber seals.



gstock
Gareth Stock
Hamilton, Ontario
(26 posts)

Registered:
10/12/2015 05:22PM

Main British Car:
1979 MGB Ford 5.0L

Re: Fuel Pump Advice
Posted by: gstock
Date: September 26, 2022 03:29PM

I like the advice of having a fuel return. Is there an "easy" way to do this on a V8 conversion without dropping the tank and drilling into the tank for a new fitting connection?


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