IHADAV8.com - Turbo Buick Tech, and Nonsense

Tech Area => General Buick Tech => Topic started by: larrym on October 21 2012, 08:55:21 PM

Title: Aeromotive pump
Post by: larrym on October 21 2012, 08:55:21 PM: Well after hearing how much fun Steve had :P and the fuel pressure issues I think I'm having I figured I might try the aeromotive 340 new this year for GM applications.

Grand National / Regal 1982-1987 Aeromotive 340 Stealth 11169

http://aeromotiveinc.com/wp-content/uploads/2012/09/Aeromotive340_app_guide.pdf (http://aeromotiveinc.com/wp-content/uploads/2012/09/Aeromotive340_app_guide.pdf)

I had heard some people have issues with the return line being restrictive?
Title: Re: Aeromotive pump
Post by: Steve Wood on October 21 2012, 10:05:21 PM: I would not be surprised to find that the Aeromotive, DW, and Turbotweak pumps all come from the same factory?

All these pumps, and the Denso as well, put out more volume at 40 psi than do the Walbros and this loads up the return line so that it can become a restriction. I would not be surprised to find there is more than one version of return line employed by the factory. GM was good about using what was on the shelf at times. Chrysler was even better.

Of course, if one guy has 14.5 v at the pump and the next has 13.8, that can make a big difference as well
Title: Re: Aeromotive pump
Post by: Pyro6 on October 23 2012, 06:53:11 PM: What about using the existing feed line as return and upsize the feed line?
Title: Re: Aeromotive pump
Post by: Steve Wood on October 23 2012, 07:27:06 PM: should work fine...the need to upsize the supply line probably becomes more important over 700 hp, or so...I would guess
Title: Re: Aeromotive pump
Post by: larrym on October 24 2012, 01:54:36 PM: Another option I read was to use the vent as a return and the return as a vent.
Title: Re: Aeromotive pump
Post by: Steve Wood on October 24 2012, 01:59:11 PM: I am not sure end to end, but, the vent outlet at the tank is larger than the return.....nev er figured that one out