Fuel pump swap
- Thread starter sweetpeet
- Start date
SteelHeadz
Super Moderator
X2, i just outlined the fuel pump mounting surface and cut it out with a piece of steel plate and installed a gasket with the original bolts. No leaks.
Not sure where Mike put his, but my old CJ I put it on the cross member just in front of the fuel tank. you want to keep it as close to the tank as possible. My CJ was a street queen so you might want to consider possible damage from obsticles or a broken driveshaft swining up and smashing it. some people put it on the frame rail just inside the spring perch too.
sweetpeet
New member
jps4jeep said:
What really?? I have never heard of anyone putting it close to the tank. In fact I think it's a bad idea becouse it takes more work to push the fuel up the line than it does to pull it up from the tank. So I was asking where to place it around the engine area. I might just put it on top of the block.
SteelHeadz
Super Moderator
Johnny nailed it. I mounted the fuel pump on the crossmember in front of the fuel tank. I also have a small fuel filter before the pump and a glass filter after the pump. The glass filter is good to have for checking fuel contamination. The small inline filter before the pump is to protect the fuel pump for small debris that might be passing through the sump screen in the tank.
actually, the pumps are pushing pumps not pulling pumps. it is harsher on the pump to suck the fuel a distance than it is to pressurize the line to the carb from the tank. additionally, you want to keep the pump away from any excessive heat, so the cold fuel will be part of the cooling of the pump. avoid placing the pump near exhaust pipes as well.
and yes, fuel filter before the pump. I like to put a fine screen filter before the pump and a courser screen filter at the carb to collect any potential trach from the pump it'self.
and yes, fuel filter before the pump. I like to put a fine screen filter before the pump and a courser screen filter at the carb to collect any potential trach from the pump it'self.
SteelHeadz
Super Moderator
If it's a mechanical oil pressure gauge, all you need to do is hook up the gauge lamp with the rest of the instrument gauge wiring. Red is positive and black is ground. I installed my Mech. oil pressure line to the original oil pressure sending unit location which is on the passenger side frontal area of the block.
As Johnny commented earlier on the thread, mounting the fuel pump closer to the engine will increase the heat on the fuel as it's delivered to the carburator. If i remember correctly, i cut about 3 inches or the metal tube after it bends towards he fuel tank then used a rubber fuel line to connect the filters and pump to the fuel siphon tube in the tank. This will probbably help increase the longevity of the fuel pump since it's mounted on a cooler area and the crossmember will help disipate the heat generated by the fuel pump motor as well.
As Johnny commented earlier on the thread, mounting the fuel pump closer to the engine will increase the heat on the fuel as it's delivered to the carburator. If i remember correctly, i cut about 3 inches or the metal tube after it bends towards he fuel tank then used a rubber fuel line to connect the filters and pump to the fuel siphon tube in the tank. This will probbably help increase the longevity of the fuel pump since it's mounted on a cooler area and the crossmember will help disipate the heat generated by the fuel pump motor as well.
superj
Well-known member
My holley is on the fender in the engine bay, right behind the headlight. I had my old holleys by the tank and never had any trouble except corrosion on the wires from being exposed to the road spray when it rained. I have had zero problems with this one in the engine bay though. Just prime the line before you hook it up and it'll never drain back and cause vapor issues in the line. I also put a high spot in the line so fuel would have a bubble spot if the line ever broke and not drain all the way back to the tank but I've never had a problem with it. I have way more problems with this stupid weber 34 then any fuel supply issues
superj
Well-known member
suck the fuel until its in your filter and it should be ok from then on. you just have air in the line and hte pump won;t pump air.
also, that pump is going to crap out on you in a few months. just spend the 100 and get the holley low pressure rebuildable fuel pump. your set up just like i am not, minus the bigger engine
also, that pump is going to crap out on you in a few months. just spend the 100 and get the holley low pressure rebuildable fuel pump. your set up just like i am not, minus the bigger engine
Jester32
New member
sweetpeet said:
That's what it's supposed to do. The fuel system if operating properly will regulate flow. The flow ratings are at no restriction. I run a Holley blue in all my street engines anything from a chevy 250 straight six to my solid roller 355 with a 250 shot of nitrous.
superj
Well-known member
that mr gasket pump is terrible. it was on my 6 cylinder jeep when i got it and it wouldn't keep the weber running properly. the holleys are great and you can get ones that have a higher volume then the low psi street carb models. i am just trying to keep you from having that mr gasket one crap out in a bad spot like the one i had did.
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