Mechanical Fuel Pump Kits

Won't run? Engine, cooling system, fuel pump, carb, clutch, tranny, brakes, etc. The old messages from the NPCA 'Engine & Mechanical' category are here.

Postby CBlake » Tue Oct 23, 2018 12:13 pm

Thanks RP! I've been searching, but no luck with a source. Anything you can think of?
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Postby jwgreen » Tue Oct 23, 2018 12:47 pm

CBlake, Then and Now says they offer rebuild kits and I know they can rebuild yours so maybe call and ask them if they have a kit for yours. Or just send yours in to them for a rebuild. :think:
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Postby RiverPatrol » Tue Oct 23, 2018 12:48 pm

A quick search looks like the NAPCO 71-0185 has actually superseded to the NAPCO 71-0430. There is a previous listing on eBay from seller anapira83, you might try contacting him.
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Postby CBlake » Tue Oct 23, 2018 1:10 pm

Thanks to you both!
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1964 very modified Hardtop
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Postby jwgreen » Wed Oct 24, 2018 10:12 am

Here is a 71-0430 on eBay right now.

https://www.ebay.com/itm/183500299074?ul_noapp=true
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Postby CBlake » Wed Oct 24, 2018 10:26 am

Yeah, I messaged him as River suggested and he posted a few more for sale.
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1966 Hardtop
1964 very modified Hardtop
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1968 Parts
1962 Softy - SOLD
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Postby CBlake » Wed Dec 05, 2018 10:43 am

I got the rebuild kit in and I think it's wrong. The stem that comes off the diaphragm seems like it's too short and the spring is fully compressed while assembling not allowing the arm to move and actually pump.

Does anyone have a diaphragm out that could be measured?
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1964 very modified Hardtop
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Postby Esteban » Wed Dec 05, 2018 11:25 am

CBlake wrote:I got the rebuild kit in and I think it's wrong. The stem that comes off the diaphragm seems like it's too short and the spring is fully compressed while assembling not allowing the arm to move and actually pump.

Does anyone have a diaphragm out that could be measured?


One of the problems is that Nissan made a couple of variations of the diaphragm, switching back from one to the other over the years (probably to promote selling the whole pump rather than the diaphragm only).

I think I have one pump dismantled that I can measure the diaphragm. In the mean time, you can review some info here:

http://www.60patrol.com/forum/viewtopic ... 89&p=19742
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Postby CBlake » Wed Dec 05, 2018 11:45 am

Seems the difference between the 0430 and the 0185 are the stem lengths. Unfortunately, when they superseded it's not an exact match.

I have 2 options as I see... I can send my pump to Now and Then to rebuild for about $110 and hopefully sell my rebuild kit with the shorter stem, or cut the stem on my rebuild kit and weld in a 1/2" extension while stretching the spring and hope it works.

Think I'll go with option 1.

Does anyone need a rebuild kit for the shorter stem pumps?
Located in central Missouri
1966 Hardtop
1964 very modified Hardtop
1967 Parts
1968 Parts
1962 Softy - SOLD
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Postby Esteban » Wed Dec 05, 2018 12:40 pm

CBlake wrote:I have 2 options as I see... I can send my pump to Now and Then to rebuild for about $110 and hopefully sell my rebuild kit with the shorter stem, or cut the stem on my rebuild kit and weld in a 1/2" extension while stretching the spring and hope it works.

Think I'll go with option 1. ...


If you have the manual primer for the pump, Option 1 will make sense. Just consider that a new pump is running around $130 at the forklift parts stores.

What length is the stem in the rebuild kit that you have?
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Postby CBlake » Wed Dec 05, 2018 1:31 pm

Yeah, I like the originality of the hand primer even though I'll probably never use it.

It's 1.5"
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1966 Hardtop
1964 very modified Hardtop
1967 Parts
1968 Parts
1962 Softy - SOLD
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Postby L60Boerne » Wed Dec 05, 2018 6:03 pm

As Justin said, several shops can rebuild them...I've had three rebuilt. Better get it done now before the knowledge and parts are gone.
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Postby Esteban » Wed Dec 05, 2018 9:53 pm

CBlake wrote:Yeah, I like the originality of the hand primer even though I'll probably never use it.

It's 1.5"


I just measured mine and it's 2". I have another diaphragm with a 1.7" stem (43mm) measured from the plate that holds the rubber to the bottom of the stem.
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Postby CBlake » Thu Dec 06, 2018 9:57 am

That's how I measured as well. Thanks to everyone for the help. It's getting sent out today.
Located in central Missouri
1966 Hardtop
1964 very modified Hardtop
1967 Parts
1968 Parts
1962 Softy - SOLD
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