324 fuel pump upgrade ?
#1
324 fuel pump upgrade ?
Want to replace the fuel pump on the 56. Current one is a dual pump and is leaking. Rather than rebuild it as I dont need the vacuum pump portion any more, I'd like to replace it with a simpler / newer design . Does such a part exist or interchange with the 303, 324, 371, 394 engine family? Newer SBO units work?
#2
It may not be what you want to do but I have an electric pump on mine. It is mounted back near the tank. I used a block off plate for a big block chevy that fit the Olds block perfectly. There are some safety provisions you will need to make if you use an electric pump.
#3
I'm not sure why you don't still just rebuild or replace the original pump. The vacuum pump poses no problem if you don't use it, they last for years and years and you don't have to re invent the wheel. Cost would be about the same with no additional plumbing or wiring needed. Any later model Oldsmobile fuel pump 57- 60 would have the same dual action diaphragm if they would or could be adapted and the later second generation engines styles would be complexly different in design and not apical to this adaption. Electrical is a cheaper alternative but in my experience (some years ago) they have a short life and all the ones I've known sound like woody wood pecker is under the seat. They may have changed for the better in the last 10 years I don't know but original has always been good for me.....YMMD....Tedd
#4
Both are viable options. Did ponder the electric pump setup. I'd probably do an in tank setup if that was the choice.
Current pump was rebuilt a when I got the car several years ago and has seemed to have an issue. Leak started small and has progressively become a steady drip/ flow from the vent hole. Perhaps diaphragm ripped. Car still runs great. Pump is on the bench so I'll need to dig into it.
Doesn't look like there is a newer style replacement so its either rebuild or OE or electric.
Current pump was rebuilt a when I got the car several years ago and has seemed to have an issue. Leak started small and has progressively become a steady drip/ flow from the vent hole. Perhaps diaphragm ripped. Car still runs great. Pump is on the bench so I'll need to dig into it.
Doesn't look like there is a newer style replacement so its either rebuild or OE or electric.
#5
Fuel pump rebuild vacuum cap off
I'm not sure why you don't still just rebuild or replace the original pump. The vacuum pump poses no problem if you don't use it, they last for years and years and you don't have to re invent the wheel. Cost would be about the same with no additional plumbing or wiring needed. Any later model Oldsmobile fuel pump 57- 60 would have the same dual action diaphragm if they would or could be adapted and the later second generation engines styles would be complexly different in design and not apical to this adaption. Electrical is a cheaper alternative but in my experience (some years ago) they have a short life and all the ones I've known sound like woody wood pecker is under the seat. They may have changed for the better in the last 10 years I don't know but original has always been good for me.....YMMD....Tedd
#7
I can only guess where the lines went, most feel away from rot and the steel line was cut and pinched off. No matter tho, I'm just making a driver. Show quality requires $$$. I'm sticking with make it work and drive... rust dust we must
#8
Want to replace the fuel pump on the 56. Current one is a dual pump and is leaking. Rather than rebuild it as I dont need the vacuum pump portion any more, I'd like to replace it with a simpler / newer design . Does such a part exist or interchange with the 303, 324, 371, 394 engine family? Newer SBO units work?
Both are viable options. Did ponder the electric pump setup. I'd probably do an in tank setup if that was the choice.
Current pump was rebuilt a when I got the car several years ago and has seemed to have an issue. Leak started small and has progressively become a steady drip/ flow from the vent hole. Perhaps diaphragm ripped. Car still runs great. Pump is on the bench so I'll need to dig into it.
Doesn't look like there is a newer style replacement so its either rebuild or OE or electric.
Current pump was rebuilt a when I got the car several years ago and has seemed to have an issue. Leak started small and has progressively become a steady drip/ flow from the vent hole. Perhaps diaphragm ripped. Car still runs great. Pump is on the bench so I'll need to dig into it.
Doesn't look like there is a newer style replacement so its either rebuild or OE or electric.
#9
I'm not sure why you don't still just rebuild or replace the original pump. The vacuum pump poses no problem if you don't use it, they last for years and years and you don't have to re invent the wheel. Cost would be about the same with no additional plumbing or wiring needed. Any later model Oldsmobile fuel pump 57- 60 would have the same dual action diaphragm if they would or could be adapted and the later second generation engines styles would be complexly different in design and not apical to this adaption. Electrical is a cheaper alternative but in my experience (some years ago) they have a short life and all the ones I've known sound like woody wood pecker is under the seat. They may have changed for the better in the last 10 years I don't know but original has always been good for me.....YMMD....Tedd
or anyone else that wants to chime in! LOL
#10
Probably that kit is a universal kit and will work on many years of fuel pumps and you end up with extra unused parts when that happens. I don't remember a steel sleeve or small gaskets but it's been quite a few years sense I did the last one.
There is a you tube on rebuilding this fuel pump that was helpful for me the first time I did one, I'll see if I can find it and I'll leave you a link.... Tedd
I did a quick search and found one for a 55 Buick, couldn't find the one on the Oldsmobile pump. It looks to be the same style as the Oldsmobile and should come apart and together about the same. This may help in you getting it back together ......
There is a you tube on rebuilding this fuel pump that was helpful for me the first time I did one, I'll see if I can find it and I'll leave you a link.... Tedd
I did a quick search and found one for a 55 Buick, couldn't find the one on the Oldsmobile pump. It looks to be the same style as the Oldsmobile and should come apart and together about the same. This may help in you getting it back together ......
Last edited by Tedd Thompson; March 4th, 2018 at 08:01 AM.
#11
Probably that kit is a universal kit and will work on many years of fuel pumps and you end up with extra unused parts when that happens. I don't remember a steel sleeve or small gaskets but it's been quite a few years sense I did the last one.
There is a you tube on rebuilding this fuel pump that was helpful for me the first time I did one, I'll see if I can find it and I'll leave you a link.... Tedd
I did a quick search and found one for a 55 Buick, couldn't find the one on the Oldsmobile pump. It looks to be the same style as the Oldsmobile and should come apart and together about the same. This may help in you getting it back together ......https://www.youtube.com/watch?v=EtAzwXw8_1I
There is a you tube on rebuilding this fuel pump that was helpful for me the first time I did one, I'll see if I can find it and I'll leave you a link.... Tedd
I did a quick search and found one for a 55 Buick, couldn't find the one on the Oldsmobile pump. It looks to be the same style as the Oldsmobile and should come apart and together about the same. This may help in you getting it back together ......https://www.youtube.com/watch?v=EtAzwXw8_1I
#12
Look in the Oldsmobile Shop Manual. There should be a rebuilding procedure there with photos. Be sure to check the castings for distortion where it seals against the diaphragms. Lay it on a piece of glass. It must be "true" or you will get a leak. That's probably why the red RTV was there.
#13
Also just as a after thought when replacing the vacuum dome use a couple of 8/32 x1 1/4 machine screws Which are longer than what you just took off to help take the tension off the diaphragm spring. Once the dome is secured replace with the original screws. It makes aliening the dome a lot easier. A vice is a handy gadget also unless you have more than three hands.... Tedd
#14
Look in the Oldsmobile Shop Manual. There should be a rebuilding procedure there with photos. Be sure to check the castings for distortion where it seals against the diaphragms. Lay it on a piece of glass. It must be "true" or you will get a leak. That's probably why the red RTV was there.
#15
Also just as a after thought when replacing the vacuum dome use a couple of 8/32 x1 1/4 machine screws Which are longer than what you just took off to help take the tension off the diaphragm spring. Once the dome is secured replace with the original screws. It makes aliening the dome a lot easier. A vice is a handy gadget also unless you have more than three hands.... Tedd
I'd appreciate you experienced guys to move to north Idaho so i wouldn't have to write so much lmao.
thanks again
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