carmen142 Posted February 8, 2012 Report Share Posted February 8, 2012 Ok Guys Been getting a lot of helpful idea on my radiator for my 41 P12 sedan and I am pretty sure what direction I will be heading. Now how about the water pump. I would like to get the original one rebuilt, put then I would have to grease it every so aften. This means more work and less fun time driving. What are your thoughts? Thanks Carmen Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted February 8, 2012 Report Share Posted February 8, 2012 Ok GuysBeen getting a lot of helpful idea on my radiator for my 41 P12 sedan and I am pretty sure what direction I will be heading. Now how about the water pump. I would like to get the original one rebuilt, put then I would have to grease it every so aften. This means more work and less fun time driving. What are your thoughts? Thanks Carmen I could see you wasting at least 3-4 minutes of driving time every year while giving the water pump a squirt of grease. What are your thoughts? Quote Link to comment Share on other sites More sharing options...
roadworthy Posted February 8, 2012 Report Share Posted February 8, 2012 I would get one with a sealed bearing Quote Link to comment Share on other sites More sharing options...
carmen142 Posted February 8, 2012 Author Report Share Posted February 8, 2012 Thanks Don I know it would only take me a few minutes of my time, truthfully that is the way I am leading. My real main concern was what is best for a newly rebuilt engine. I know that those water pumps worked on those cars when they were first made way back when, but I wonder that if they had a seal water pump then would they have used it. Thats all. I have a 1944 MB Jeep that I restored and still have as well as a 1954 Dodge M37. I drive either one of them at least 2-3 times a week during good weather, but never ever in the snow. I had the engine and transmission rebuilt on both of them and they run great. But this car has stole my heart and I only want what is best for her. Carmen PS. Looked at some of your vidios I love them. I really like that gas tank shaker. Quote Link to comment Share on other sites More sharing options...
desoto1939 Posted February 8, 2012 Report Share Posted February 8, 2012 If you can get a rebuild pump with the sealed bearing then I woud go with that as my first choice else the one with the zerk fitting to pur in water pump grease is my next choice. remember that if you over grease them then you can blowout the seal and then you get the ater leaks. so a little dab will do ya. Its up to you to pick Rich HArtung Desoto1939@aol.com Quote Link to comment Share on other sites More sharing options...
1941Rick Posted February 8, 2012 Report Share Posted February 8, 2012 NAPA has new ones that are greased and sealed....go with it... Quote Link to comment Share on other sites More sharing options...
meadowbrook Posted February 8, 2012 Report Share Posted February 8, 2012 I think the impeller from the newer pumps is also more efficient giving more flow. My old greasable pumps impeller looked like a two bladed paddle whereas the new one looked more like a modern centrifugal impeller. Quote Link to comment Share on other sites More sharing options...
Andydodge Posted February 8, 2012 Report Share Posted February 8, 2012 There are some things that time has improved, water pumps are one such animal.......if you like grease then rebuild the original pump.....personally I think the lack of even one grease nipple is a big improvement, not only in the reduction in greasable points but in the small reduction in weight of the grease nipple............lol..........also I'm a lazy bastard...........lol..........I replaced the pump on the 41 Plymouth and didn't miss the grease nipple.........lol............andyd Quote Link to comment Share on other sites More sharing options...
carmen142 Posted February 9, 2012 Author Report Share Posted February 9, 2012 Another question I have on the water pump. Is there one brand better than another? I see that NAPA has one but are they as good as what some of you guys may have on your engine? Carmen Quote Link to comment Share on other sites More sharing options...
Rodney Bullock Posted February 9, 2012 Report Share Posted February 9, 2012 The new pumps that NAPA sells has a bigger perpeller. It moves more water. That's what I noticed when I replaced my pump last year. The car ran alot coller as well. I learned alot about water pumps and how they are installed. I had the old style grease fitting, small perpeller type. Quote Link to comment Share on other sites More sharing options...
Young Ed Posted February 9, 2012 Report Share Posted February 9, 2012 I'm running Napa pumps on both my flatheads. The one on my truck is a rebuilt one and the one on my car is one of the new ones with the better flow and sealed bearing. Quote Link to comment Share on other sites More sharing options...
Greenbomb Posted February 9, 2012 Report Share Posted February 9, 2012 Ed, would you happen to have a NAPA number for the new one on your car? Quote Link to comment Share on other sites More sharing options...
TodFitch Posted February 9, 2012 Report Share Posted February 9, 2012 Ed, would you happen to have a NAPA number for the new one on your car? See: http://www.ply33.com/Parts/group7#7-42-01 Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted February 9, 2012 Report Share Posted February 9, 2012 Coolant flow in an engine cooling system is controlled more by a restriction device (commonly called the thermostat) than by the water pump. There is such a thing as too much flow. If coolant flows too fast it does not stay in the engine long enough to become saturated with heat and the engine will overheat. Ask any ford flathead owner about controlling flow on an engine with two water pumps. Who here has documented proof that there is increased flow with some new water pumps? Simply saying your engine runs cooler is not documentation. Show me a pump curve indicating gallons per minute over an RPM range for both the old and new pumps for documentation. If these newer pumps flow more then how did any engines survive until the new pumps were invented? Quote Link to comment Share on other sites More sharing options...
Robert Horne Posted February 9, 2012 Report Share Posted February 9, 2012 I have read several times articles that state that running with no thermostat can make a car overheat due to coolant not having enough time in the radiator to reduce heat. Quote Link to comment Share on other sites More sharing options...
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