[DeTomaso] EFI Fuel Pump

[Will Demelo]

I spoke to the tech at Aeromotive. He said the excesive heat caused the 
problem. At first, he thought it might have been a vacuum lock, but I told 
him I removed the cap at one point. Also, this fuel system has been 
trouble-free for 3 yrs.
I think the heat partially toasted the windings in the electric pump motor. 
I've seen this before with larger electric motors.
I've ordered another and will send this one in for a test/rebuild.
I wish I had of known of Weldon earlier. I would have bought one of them as 
they seem to be a much better pump AND cheaper.
Will

-----Original Message----- 
From: Cullen McCann
Sent: Wednesday, June 01, 2011 4:35 PM
To: 'Will Demelo' ; Detomaso at realbig.com
Subject: RE: [DeTomaso] EFI Fuel Pump

Hi Will,

Just thinking outloud....I use a Mallory 4140 on my protouring chevy
nova...it makes about 500 horse in a 406 inch small block chevy...its worked
fine for years, but its carbed....so it only carries about 8 or 9 psi...Im
surprised the aeromotive system failed you. I assume you are using a return
style regulator right? I have seen a few systems try and "dead head" the
fuel supply at the regulator without returning to the tank with a low
pressure line...wears the pump out pretty fast...

I have an aeromotive pump on my 5.0 mustang...its closer to 400 horse but
again, its always worked great. When it was supercharged I was rising
pressure on the regulator with boost...still an Aeromotive pump...worked
good then.

I wonder what happened?

Cullen






Subject: [DeTomaso] EFI Fuel Pump

Can anyone recommend a good external electric fuel pump tha that will
support >550hp?
My aeromotive didn't last too long
Will