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1957 royal fuel pump

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Old Jul 15, 2025 | 04:12 PM
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Default 1957 royal fuel pump

Need to replace the fuel pump for this 325ci 2barrel carb engine. Does anyone know the part number and who might have one? Thanks.
 
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Old Jul 17, 2025 | 07:11 PM
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Originally Posted by joe conrad
Need to replace the fuel pump for this 325ci 2barrel carb engine. Does anyone know the part number and who might have one? Thanks.


You can try these places;

https://www.amsnos.com/

https://www.oldmoparts.com/classic-chrysler-parts

https://www.moparpro.com/


Keep in mind, these pumps were made for pure gasoline, not gasohol like we have now. I've had new pumps for older equipment fail after less than a week. It's a combination of age and part design. Being a 12 volt system, you can run an electric pump and leave yours on the engine for looks.
 
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Old Jul 19, 2025 | 07:34 AM
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I was curious to see what a pump looked like from this era. Found this, Not sure is anyone makes rebuild kits for these but may be an option.
 
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Old Jul 19, 2025 | 09:19 AM
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Originally Posted by Moparite
I was curious to see what a pump looked like from this era. Found this, Not sure is anyone makes rebuild kits for these but may be an option.

The one without the filter bowl looks like the one on my '55 Chrysler with the 301 poly engine.
 
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Old Jul 19, 2025 | 06:08 PM
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Removed old pump which looks original and was only marked with "made in Canada". The service manual for that car shows part #M2502-S which has no glass bowl. I have been told to only use ethanol free gas in these old cars. Thanks again for the replies.
 
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Old Jul 20, 2025 | 01:04 AM
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Originally Posted by joe conrad
Removed old pump which looks original and was only marked with "made in Canada". The service manual for that car shows part #M2502-S which has no glass bowl. I have been told to only use ethanol free gas in these old cars. Thanks again for the replies.

Older cars run just fine with alcohol. It's the rubber parts that don't like alcohol. Henry Ford even designed the Model T to run on alcohol. Generally, premium fuel is your best bet to get E-0 fuel. What I've been doing for my stored fuel is adding Stabil 360. It stops alcohol problems. Boat owners swear by it. I've been using it in my mowers and so far no issues, but it's still early days. Next year I'll decide if it's worth the trouble, bit so far, it seems to be working.
 
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Old Jul 20, 2025 | 11:17 AM
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I used Stabil one time and put it in two of my cars. Next spring neither one would start. One of my other cars I did not put it in fired right up. One had a carb and the other was MPFI. I had to drain most of the gas out (and carb), Get the fresh fuel to the carb/throttle body before I could start them. I'll NEVER use it again!
 
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Old Jul 20, 2025 | 03:18 PM
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Originally Posted by Moparite
I used Stabil one time and put it in two of my cars. Next spring neither one would start. One of my other cars I did not put it in fired right up. One had a carb and the other was MPFI. I had to drain most of the gas out (and carb), Get the fresh fuel to the carb/throttle body before I could start them. I'll NEVER use it again!

Stabil is designed to keep stored fuel fresh. It is NOT designed to keep carburetor ports open. I run my equipment out of fuel before storage. Either empty the tank or shut the fuel flow off and let the carburetor run empty. I've never had an issue with regular Stabil. Stabil 360 is new and I'm looking to see how it works.
 
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Old Jul 21, 2025 | 03:33 PM
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I admit I have never used any fuel additives for storage. ... Todays fuel is just crap and does not have a good shelf life .... 2 years is probably max.
My Caravan sat for 2 years and ran all right .... had a full tank and ran about 10 gallons out and topped it off and ran better.
My neighbor has a old 52 Ford and a 65 Chebby truck .... really nice vehicles parade quality paint on the Ford and less then 100 miles on the trucks paint ... they are nice.
Just sad because I was working on the Ford and it had 2 year old fuel in it .... He wanted a tune up and it ran fair so I asked him to run out the fuel and then fill it up with fresh.
He never did ... he got sick and moved 4 years ago because he needed nursing .... He passed away 6-8 months ago, but the cars are still sitting there ... Mother owns the house, brother inherited the vehicles. No family has been here in over 4 years ... their just sitting there.



Just kinda sad to see this stuff rot away .... The Ford has a Ford 90's 302/6spd auto .... truck has a 350 vortec with a NV3500 ... they ran when parked .... fuel will be a big issue on these.


About the fuel pump issue, to be honest what I would do is gut out the stock pump and remove the arm and install a block off plate ... then install a decent proper electric pump made for a carburetor with correct pressure. .... Just leave the body of the pump and it looks original .... and just passes the fuel through it .... The electric pump will provide a few advantages with modern fuel.

Modern fuel will evaporate quickly .... if the vehicle sits for a couple week, it will have to crank a long time to get fuel back up to the carburetor. .... electric pump will deliver it without cranking the engine.

Some of these old rigs will get vapor lock with modern fuels .... electric fuel pumps will not prevent that .... will push liquid or vapor, you would not be affected from the problem.

You can see that there is not a active market for a 325ci engine .... you can send your pump off and have it custom rebuilt with modern rubber that works with modern fuel.
What happens if it gives more problems in a couple short years? .... Will have to go through the whole process again.

These 3 reasons alone is why I would switch now ..... Same time many add a electric pump as a assist pump ..... they run off of mechanical, but when the car has been sitting, they use the electric pump to fill the carburetor ... then start it and turn electric off.

If you are driving and experience vapor lock, you can just turn on the electric pump and get you through the problem ... shut it off when not needed

My flathead 6 was in production longer and easier to buy a replacement pump .... I did install a fuel filter near the tank where a future electric pump will be going.

Unless you own a 100 point show car and it has to be 100% original .... I would just go electric.




 
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Old Jul 21, 2025 | 07:56 PM
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Stabil is designed to keep stored fuel fresh. It is NOT designed to keep carburetor ports open.
It was put in the gas tank and ran before winter. The carb had no issues. The problem was the fuel would not ignite. Spray staring fluid in and it would run off that then died. The FI one the plugs were wet with fuel and still nothing. Not worth it, If the gas turns to turpentine then I will drain it before I use Stabil again.

If you are driving and experience vapor lock, you can just turn on the electric pump and get you through the problem ... shut it off when not needed
How is a electric pump going to do that if it's not returning fuel to the tank?
will push liquid or vapor,
At what psi? Pushing fuel past the needle valve and not knowing how much is going into the bowl could flood the engine and have gas coming out the vent onto a hot motor.

 
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