i just installed a carter pump on my RX, and i want to throw a few things out there for anyone who can offer me some advice/help

first, i read a thread on someone else's installation and it seems that they were able to install the pump in the stock location without much trouble. i want to know what to do about the wires. as you know, they connect from underneath the pump and i feel they therefore have the potential of being either ripped from the car by road debris (i got boned by trailer tire that exploded in front of me on the highway) or shorting out on some metallic member of the undercarriage.

i have the pump installed inside the storage compartment behind the driver's seat right now, but that leads to my next question. the noise ... it's driving me loopey!!!!! is there anything that can be done to quiet it a little? i would really like to mount the thing outside the car, as it was intended, but since it has to be mounted in an upright position i'm just not too comfortable about the fit (since it's so freakin' tall)

anyone that can help ... i want to thank you up front!

 

There's a perfect spot for it on the chassis frame rail just where it starts to curve up over the diff. That's where I installed mine. You just drill a couple holes in the frame rail and use the self tappers to mount the bracket. It's really quiet as long as you use the rubber bushings that come with the kit.

As for the wiring, the ground should go directly to the chassis but you can use the stock positive wire. If it's not long enough just run a new wire up to the connecter inside the car. You can tie the wire to the fuel lines to keep it out of the way.

You may also need to do some minor re-routing of the fuel lines and filter. You'll need to use 90* fittings on the pump as there's not a lot of room. That's about all I can think of.

 

REVHEd thanks for the information, installing an upgraded pump is going to be my next mod of the month. I wish there was more reference data on required flow not just pressure.

 

Or you could mount it like I did:

 

If you think it was load with the Carter, you should try a Holly Blue. Man that was load even with all the insulators. I mounted mine on the frame rail link Revhed it works great. I do not think that it hangs to low to catch the wires. Nimrod's setup looks pretty nice too, but would mounting it on sheet metal make it louder? I think it might.

 

The Carter pump uses two sets of rubber isolators when used with the supplied bracket. It hums away quietly in mine just using the one set. The facet pumps I had prior to the carter were about 50 times louder.

 

Just a note... do not mount the Holley pumps inverted (i.e. with the round bit pointing down and the square part up). Holley advise against this, and I have personally seen 2 of them fail on a friend's car from being mounted that way. The Holleys are quite loud but with some creative use of rubber isolators you can get the noise down to a tolerable level. I rather like the sound- hearing that pump come on before the car fires make me think "race car".

 

what is normal pressure for a good pump - eg holley,, carter? I have been told that on a stock 7 13b efi, the pressure is 95psi??? Is this right? it sounded insane.

 

Nimrod, what model of Carter do you have?

 

My carter is not at all quiet, even with the rubber isolators. It's ******* loud! (but it does its job well )

 

THe 7 pound one, summit part # CRT-P4594

 

the pressure is going to depend on which carb you're running. i've got the Dell'Orto DHLA's on mine and they don't recommend more than 4.5 psi. Holley's can take a full 6.0 psi (and even slightly more if you're running a bridgeport). Webers take 4.5, like the Dell's.

yeah ... a stock EFI pump will push 95 pounds that's why it can't be used with a carburetor.

the problem is finding a balance between pressure and flow. and frankly, i find it to be a pain in my ***, trying to get the Dell'Orto to stop spitting gas out when it's idling. but i guess this is the curse that FB owners must face unless we're fortunate enough to get an EFI system.

 

Silver, I wonder why your pump is so LOUD??

 

So, if I was to replace my shitty stock pump with a used domestic pump putting out like 110 psi, would it help power, or just **** me? I think it should help, because as the pump ages, i am losing power. ???

 

well ... just replacing it with a pump that pushes more pressure is not going to help power, it may even make a little less (i'm not sure how the pressure is regulated on an SE) due to flooding.

if you were to modify the engine so that it started to ingest A LOT more air, then the added pressure would help.