I'm currently installing a Holley Blue fuel pump and was wondering what the amperge rating was on it.I can't find it in the instuctions.Anyone have pics of installs?Also since my car came without an electric fuel pump could I just use the empty spot on the fuse block as a source of power.

 

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Thats my best idea as far as finding the amperage . I've never actually seen that anywhere.

You prolly wanna avoild using the fuse panel. Most of the wires to and from that are pretty skinny. Your best bet would be to get a 30 amp (should be enough) relay from your local parts store. Wire up any switched source for that, and run heavy gauge wire straight from the battery, through the relay to the pump. you could use one of the wires from the fuse block just as a switched source for the relay..that would be fine, but I wouldn't run the pump off it.

 

Jester once again you the man.I figued a thirty amp fusible link would work ,but wasn't sure.didn't want to overrate it and see the whole thing melt.By the way do you have any personal expierence with them?Are they really that loud?Oh well I guess I'll just turn up the radio Perfect Cure All.

 

If you wanna be safe, buy like a 50 amp relay and put a 30 amp inline fuse between it and the battery. but that should be wayyyy overkill. I think I'm using the stock fan relay for the pump since I replaced that one with a 50amp...I don't know what it's rated at (20 maybe?) but I havn't had any problems

I have a summit brand pump roughly equivilent to the blue pump. When I first got it I had it mounted above the axle behind the rear seat. Worked fine, but it was obnoxiously loud. I used some rubber washers but it still just used the whole floorboard to reverb through into the cab. After I welded a fitting to the bottom of the tank instead of using a pickup I moved it. Now it's hanging off of a stock tailpipe hanger on the driver side. Kinda exposed, but I can hardly hear it. I used to drive it back and forth to work with it by the rear seats. I had to turn the radio up so loud to drown it out my ears would be ringing everytime I got to or from there. kinda sucked



I have my battery and the relay and everything in the trunk, with about 2' of wire down to the pump. I just have the relay run to a manual switch on the dash..I like it more that way.

 

I just reread the instructions it says to fuse the switch leg side of the relay(the lead going to the pump) at 7.5 ampWow I really thought it would pull more than that.

 

I know they say to place the pump close to the tank because they push better than they pull. What would happen if the pump was mounted in the engine compartment. Would it really be detrimental? I have been trying to figure out where I will mount the stupid pump. I had thought of behind the seat, and welding bolts to the front of the gas tank and attaching pump. WOuld this work?

 

I wouldn't weld it to the tank..that metal is pretty thin.

 

Well, what about mounting it low in the engine compartment. The pump would still be gravity fed by the tank being higher, then it could force it up to the regulator and carb. I know they say to mount it close to the tank, but engine mounted pumps have worked fine having to suck the fuel to the engine compartment, and then pumping it to the carb. I would think the electric pump would be more efficient. Since they can flow ~90gph at 14 psi, that should be sufficient for a ~5psi carb, right? Does my thinking have some downfall?
As for mounting it behind the seat, what about coating the sheetmetal with rubber undercoating and placing the pump mount on a piece of thick rubber. Would that be enough to suppress the vibrations?

 

Low in the engine bay might work fine. It will probably show some drop in flow, but I havn't the foggiest how much it will be. I wouldn't guess enough to cause problems but I'd hate to swear to it. If you do it that way..I'd bypass the stock inline fuel filter, and put one after the pump. Try it and see...if you show a pressure drop up top you know it needs to go closer to the tank.

Even with insulation behind the seat it'll still be loud. Maybe if you got a beefier isolation style mount, like a junkyard/parts store exaust hanger, or even an old tranny mount, might work good enough.

 

I think I'll give it a try. I have one of the large Fram cannister filters so flow should not be impeded too much. I might mount it directly before the pump. I guess I'll call Holleys tech line tomorrow and see what they say. I'll let y'all know how it turns out. If all else fails I'll just use your method!
Thanks Jester!

 

Man that thing is ****in Loud,I ended up mountng it behind the back seat drivers side I wonder it dyno matt would eliminate some of the noise.Ohh well the install went pretty clean I'll try and post some pics.

 

hehehehehehehhehhe

told ya

 

HAhahaha - it is loud!! I have the Summit pump (the same as the Holley Blue) and it's crazy loud. When I had the car painted, the guy said to me "why do you have a loud motor running before the motor fires up", I told him it was the pump and he looked at me like I was nuts. To be honest though, I don't like the loud noise, it's get irritating after a while. At first I thought it was cool but now I'm done with it. I tried everything, from rubber mounts to a totally new bracket off the lower frame and it's still too loud. I'm gonna throw in a mechanical.

 

I had an idea I never actualy tried out, for people running a sumped tank. Might not really be that easy..but one of you might wanna take a look. Cut a notch in the bottom of the rear bumper, and recess the pump up in it. Bolt it to an exaust hanger up there, and maybe fill the cavity with some poly. foam. I bet it would be real quiet. Just don't get rear ended.

 

Notice Jester said that HE never tried it out

I sense a little bit of a fire hazard?