Im going to be installing an in tank pump on my 85 gs 12a... it has/ had an external pump... i currently have an external 255lph walbro... want to put in a 400 lph or 340 aeromotive intank pump.. anyone done this? pics and how to maybe? otherwise i will be going from scratch again haha... thanks guys
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oh will another sending unit or hanger fit in my tank from a car that has an original in tank pump?

 

Yeah this has been done before. Most of us use the parts from an FC tank, you need to cut the slosh cup out and the pump mounting ring and then weld them into a FB tank. The S4 (86-88) pump hanger is the best since its the right height, and S5 will work too but need to be shortened a bit. The slosh cup and mounting ring can come from any FC tank.

Here's a old pic of mine:

Edit: just re-read your post, I have not put a pump that large in tank, mine is a walbro 255, but as long as the 400 or 340 will fit in a FC setup then this will work great for you.

https://www.rx7club.com/attachment.p...3&d=1172792567
https://www.rx7club.com/attachment.p...4&d=1172792567

 

thank you! interesting.. whats the major function of the "slosh cup"? is it just to keep the pump from sucking air when cornering at lower fuel levels?


thanks!

 

Yeah exactly, it keeps a constant supply of fuel at the pump at all times so it doesn't starve the engine while cornering under a load etc. If you're running a turbo it's a must - running lean under boost would be bad lol

 

I see you have a GT35R on a 13B. First off -- good combination. You'll be happy with the responsiveness.

As for the fuel pump: There are two basic kinds -- OEM quality and the others. The Walbro and Bosch pumps are OEM units. They were designed to be used in production cars, and are therefore very reliable. The Aeromotive wasn't. It's a typical aftermarket part that doesn't have to adhere to the same standards.

Another thing to consider is flow vs. pressure. In an injected application, the pump's free-flow rating is irrelevant. You need to know how much it will flow at your max boost level. If you check the Aeromotive data, I think you'll be surprised.

If you're still determined to use the Aeromotive pump, be sure to spring for the pump controller because their A1000 isn't really designed to run steady-state on a street car. The pump controller will lengthen its life considerably and make it quieter during normal usage.

 

Sorry i didn't specify the 400lph is a Wlabro... there new one... leaning towards this

 

Do you have any more pictures of your slosh cup? I have a T2 pump and hangar assy from my engine setup that I bought off of ebay, But no tank to get a slosh cup from. I am still trying to figure out my fuel system, but I think I may go this route. I have a 044 bosch in-line and planned to install a rear sump but this looks like a little better idea since everything I have read stated that the inline bosch needs a feeder pump in tank. were you able to use the fc sending unit? Also do you have any tips as how to feed the wiring through the top?

would anyone be able to suggest a more efficient/effective slosh cup? Since I will be fabbing this, if there is room for improvement now is the time