Can anyone tell me where I can get a replacement Impeller for this style water pump? I know I can spend about $200 and buy a new pump, but I’m hoping to save some $$$. I have taken the pump off and gone back “original” but I want to have the pump ready for summer- JUST IN CASE. I'm new to this, I dont know what the numbers to the right of the water inlet mean? looks like 41319 or 4 3 9???,
Question; Does it over heat? If not, then you do not need a water pump. If it does, make sure you are giving it enough spark, that is running it with the lever 1/2 to 3/4 down and adjusting the needle valve to where it runs sweet. If you still need a water pump they come up on e-bay all the time. Do some checking, some brands just spin the water and there is no circulation.
While old radiators have lost most of there ability to transfer heat you could try a stop gap and have it cleaned and a good flush to the motor. Remember; gurgling is normal when you shut the motor off when warm, and spiting out water is often telling you there was too much water in the first place.
The water pump will be more of a liability than anything else. They don't add anything to a good running Model T, summer time or not.
I had this problem with a water pump once and took it to a machine shop. They made all new parts for the inside. The pump is sitting on the bench as the T runs fine and I don't really need it.
Looks like you have the impeller. You need to machine out the stub for a new shaft. You'll need to replace the shaft as well and perhaps the bushingss, although often bushings are fine. I'd do it for you but am knee deep in projects myself.
4/13/19 would most likely be the casting date number. You can verify by checking your serial number against the casting date and it should be close. Unless you want to post your engine serial number here ( I wouldn't), send me the number off forum and I'll look it up for you. A close-up photo of the casting date area would help also.
I bought a stainless shaft and seals for my Henry from McMaster.
I run a 180 Thermostat with it. Never see any red on the motometer, except when less than 5 mph for too long, as I removed the fan.
I haven't added water or waterpump lube in months or years.