electronic fuel pumps

[a.d._510_n_ok]

Anyone running one?

 

Are they a major plus for Datsuns versus the factory mechanical pumps?

 

Are block-off plates for the mechanical ones available?

[datzenmike]

The stock Nissan pumps are very good and seldom fail. Even a used one off a wreck is better than a non factory mechanical one. I'm running a Z24 which has no opening in the head for the mechanical pump, plus the studs are used for a power steering pump mount. I use the Nissan 720 electric pump that mounts on the outside of the frame just ahead of the rear passenger side tire.

 

I don't see any advantage to switching to electric from the mechanical if it is working fine. The electric pump should be mounted as low and as close to the tank as you can because they push much better than they can suck. Also the pump should be properly wired so that in the event of an accident it will shut off to lessen the risk of a fire. You do not want gas poring out of a carb while you are trapped in an upside down wreck. Any later 720 will have the pump relay that only allows power to the pump while cranking OR only if there is oil pressure and alternator output with the key on.

 

BLOCK OFF PLATES

 

Any Z20E, Z22E (200sx '80-'82) or Z22S ('81-'82 720) will have a block off plate over the hole where the mechanical pump was.(the Z24 is sealed) Here's one from a Z engine, I know it fits because I put an L pump on a Z head to see if it would fit.

 

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Edited December 9, 2008 by datzenmike

[datsunaholic]

One advantage is after sitting for some time, you don't have to crank the engine 30-60 seconds just to build up fuel to get the thing to start. Of course that also means it has to be wired the "unsafe" way (on with the key on).

[zed]

My L18 Hardbody came with an electric fuel pump OEM. But the pump is INSIDE the fuel tank. Which makes it a real PITA to get to. Also, replacement pump is damn expensive - about R850 / US$112 aftermarket