ReMiXeDg

Hi I have a 12a turbo , I plan on purchasing holley efi 650 what fuel pump should I run with this can someone give me a model number it says has to be 43psi to 60psi.

Also what fluids should I use for the transmission and rear end I would like to change them out.

Thanks much appreciated.

diabolical1

iTrader: (3)

1. Bosch 044 (or similar), but you'll also need a regulator regardless of pump you choose.
also, it might help to include the turbo you plan to use as well as the tank setup you have. some pumps are in-tank only.

2. tranny & rear end stuff

https://www.rx7club.com/1st-generati...fluids-477033/

https://www.rx7club.com/1st-generati...-fluid-432023/

ReMiXeDg

Its a custom tank I belive it has the fuel pumps outside if the tank.

I was told it has a grand national turbo would you happen to know which turbo or size this would be thanks..

Fuel pressure regulator? Which one should i look at i think the holley efi has one built in.

Richard Miller

I pulled the trigger on the Holley in tank retrofit today. (12-136) with the hydramat. I will be installing in a 1980 stock fuel tank.

diabolical1

iTrader: (3)

https://www.holley.com/products/fuel.../parts/550-519

well, i didn't see any mention of a pressure regulator in the written description, but in the video, it is implied that there is one built in. however, the guy did say that forced induction applications would require an external bypass-type fuel pressure regulator, so it still sound like you'll need one.

which one should you look at? i don't know. whichever that fits your needs and has at least some reputation of being reliable. i have a Mallory, but i've see Aeromotive used a lot with good results. i've only ever used Holley regulators with carburetors, so i don't know about their EFI spec regulators, but if they're building management systems, i would imagine they probably make good regulator, too.

as for the turbo, if i recall the GNs had some sort of T3 from the factory. they are relatively small. now, with that said, the term "Grand National turbo" is open to interpretation. it doesn't automatically mean an OEM GN turbo, so we still don't necessarily know what you have.