I'm running a stock electric diaphrapm pump in the back of the car feeding regulators for the SU's up front. All of this on my '71 240Z 2.4 with mild work. It runs fine but I'm fed up with the drumming noise of the fuel pump! I do like the anti-theft properties of this arrangement however. I've read through post after post without finding a definative solution as to what pump I want to use. I'd like to use a rotary/gerotor type pump which will eventually feed tripple Dellortos. At $50 to $150 per pump, I don't want to experiment with my bank account. Can someone whom has actually used said product provide a make/model pump that is quiet and fits the bill? :stupid:

I went through the same exercise as you....I got tired of hearing that constant buzzing sound. It's likely to drive you insame. So, I did a little research and chose to purchase a Mallory gear type pump. Work very well, and the only time I can hear it is when I turn the ingition on, just before cranking over the engine to start. Once the engine is running, I can no longer hear it.....I'm a happy camper now. Mallory has many sizes and pressure outputs available to suit your needs...check them out.

Go to the wrecking yard and get a fuel pump from a carburated RX-7. Quiet and flows beautifully.

I have been running a RX-7 pump from a '79 for about 3 yrs. Gary

I have been running a RX-7 pump from a '79 for about 3 yrs. I bought a spair because it was right there and only $15.00 . We tried it on a friends tripple Mikuni's on his stroker engine and it supplied them great. So great that he went out and bought one himself. They pump right at 4 psi. and the SUs handel the pressure just fine. Gary also they are quiet and can be heard only if the engine is not running. They are a turbo pump and spin at high speed , be sure to put a inline filter on the tank side of the pump.

Thanks for the feedback. The RX-7 pump sounds like the ticket. I don't care to drop big money on a fuel pump because of the label. When it's in I'll post my firsthand opinion.

Okay, I picked up two fuel pumps. Since I didn't pulled them myself I have no knowledge of which fittings are IN and OUT. I also don't know which wires are positive and negative (black and black/white stripe). Could someone elaborate?

Sorry for the delay I had to go under the car and look , the pump is marked in and out , the inlet is at the end that the wires leave the pump. The black is ground and the black/white is the poss. No regulater is needed with this pump as it puts out right at 4 psi. At least mine does. If you mount the pump with rubber connecters it will help the werrring noise , but it is not noisy in any case. Stick a inline filter in front of the inlet . Gary

Thanks, Gary! One more step in the right direction.