240Z Fuel Pump alternative

[=Enigma=]

Does anyone know if the electric fuel pump off of a 80-85 Nissan 720 Pickup can be used as a replacement for the early 240 electric pumps, specifically a 73'. They both look the same to me and the cost is more than reasonable. See linky below.

Nissan 720 Pickup Fuel Pump

[mlc240z]

not if the pickup engine was fuel injected. pressure needs to be around 4lbs for '73 carbs.

[beandip]

If you go to the '' bone yard '' and by chance find a RX-7 that is Carberanted , NOT fuel injected , get the pump . It is located just ahead of he diff on the driver side . They will pump right at 4 to 5 lbs and will not over whelm the carbs and will supply triples if needed . I bought a couple for $15.00 each and I have been running one for several years . Since I first posted this information about 4 years back they are getting difficult to find , at least in my area. Gary I think mine are from '79 or 80 cars .

[Arne]

Yeah, I made a few calls to local Eugene area yards today. Most didn't have any RX7 pumps, and those that did wanted $45 and up for them. I found a really tiny new aftermarket pump rated at 4-7 PSI for $35 and one of the local parts places. That may be the way I end up going if I can't find an affordable Mazda unit. Don't know how noisy it might be though...

[beandip]

Isn't there a u-pull-it or a bone yard that will let you pull the pump your self ? One thing about the rx pump is that it is quiet .

[=Enigma=]

The junk yards around here suck. I have never found anything that I wanted and have come to the conclusion that it is easier to buy what I need new if it is available. My time is infinitely more valuable than the difference in cost in most cases.

The pump I referenced was used on 1980-85 carburated 720 pickups. It looks identical to the stock pump I have now. I was hoping someone else had tried it out already. I guess I'll be the guinnea pig if and when it becomes necessary, or I get tired noise the one I have now makes.

[Arne]

Isn't there a u-pull-it or a bone yard that will let you pull the pump your self ? One thing about the rx pump is that it is quiet .

Only two you-pull-its in Eugene, neither has any old RX7s in the yard. (Or so they say.) The other yards all want too much for this item.

That $35 new one looks like a good alternative, it's very small, very simple and is rated at 4-7 PSI. Its small size makes it look like it would be simple to mount, probably not too hard to find rubber mounts for it. They also have an identical model that is 1.5-4 PSI. I may stop back by and get the brand and model. My only question about it is noise.

I've got some time to figure it out, in my case. There are still a couple of other parts I need to gather before the carbs go back on it. (Heat shield, return springs, choke cable and of course, the pump.)

[Arne]

Any feedback on this one? I've read that they are a bit noisy if they are rigidly mounted, but fairly quiet if rubber mounted. Obviously looking at the 4-7 PSI model. The brand is Facet, the model name is Posi-flow, and the one I'm looking at it the 4-7 PSI model on the far right.

[beandip]

If you rubber mount it . It should be ok for noise , it's the pulsating type that rattle and make all the racket. I just wonder about the 7 psi. . You are aproching double the pressure that is recommended . If you could get one of the pumps Enigma was talking about for $10 or 15 bucks . I would be tempted to go that route. In fact I think I will look for one of them my self. As long as we are talking electric fuel pumts . There is safety issue here. On these early cars there is no shutoff other than the key switch to stop the pump. In the event of a crash or upset the fuel will continue to pump as long as the key is in the run position. The addition of a INERTIA SWITCH , I think is a great addition. I have one from a Ford truck that was given to me by a member and it is going on my Z . Part # E7AE-9341-AA It is a simple devise that will trip in a collision and it has a red reset button on the top. I did install a pressure switch on the oil outlet along with the sending unit so that the fuel pump would be shutoff when there was less than 5 psi oil pressure . I think the inertia switch is a better idea. The pressure switch would however save the engine in the event of a oil pump failure . However it would only work on non injected cars. Gary

[montoya_fan01]

http://www.aircraftspruce.com/catalog/eppages/interrupterpump.php

I'm running pn # 480545. Mounts in stock location. Quiet enough for me. Cheap enough too.

[Arne]

I was planning on the oil pressure shut off as well, I've had other cars that came from the factory with that system, seems to work well.

As for the pressure, they make the same pump in a 1.5-4 PSI version as well. I just wonder if that would be enough.

Not that trust them entirely, but I note that MSA sells a Holley pump that they say has a 7 PSI max as well. Bryan Little's site recommends 3-5 PSI.

My problem is mainly that I want to get the pump as cheaply as I can, to save money for more fun parts.