C-2 Water Pump Rebuild

[Edward S.]

Has anyone ever done business or have a way to contact a guy who I think used to advertise in the Driveline about rebuilding your original water pump. He said he would change all the internals to pump about 30% more water - a friend of mine had this guy work on his and has been real pleased for about 6/7 years now. It corrected a problem he had with his 67 435 running hot in traffic. We think the guy lived around Warminster or Westchester Pa. Any information that can be provided would be greatly appreciated. Thanks.

[Stuart F.]

Re: C-2 Water Pump Rebuild

Ed;

Hope someone gives you a reply on this. It sounds interesting.

Stu Fox

[Peter J.]

Re: C-2 Water Pump Rebuild

That sounds like the kit Summit and others sold a few years ago. It was a disk that you would rivet on to the impeller to move more water. It was or is pretty cheap and you don't need to rebuild the pump to install it. Just the gasket.

[Joe L.]

Re: C-2 Water Pump Rebuild

That sounds like the kit Summit and others sold a few years ago. It was a disk that you would rivet on to the impeller to move more water. It was or is pretty cheap and you don't need to rebuild the pump to install it. Just the gasket.

Peter-----


I don't know if that kit is available anymore. It was a product of "Flowcooler" but I think they decided to take it off the market and sell only the complete waterpumps. I suppose there was not enough to made off of just selling the kit. I mean, how much could you get for a kit which included only a sheet metal disc and 3 pop rivets? It would be extremely easy to make this up, though.

Keep in mind, though, that this kit was ONLY applicable to waterpumps with fabricated steel impellers and NOT to those with cast iron impellers. The cast iron impellers inherently have all the benefits of the Flowcooler conversion. All original waterpumps until the mid-70's have the cast iron impellers unless they've been changed during a previous rebuild.

[Joe L.]

Re: C-2 Water Pump Rebuild

Has anyone ever done business or have a way to contact a guy who I think used to advertise in the Driveline about rebuilding your original water pump. He said he would change all the internals to pump about 30% more water - a friend of mine had this guy work on his and has been real pleased for about 6/7 years now. It corrected a problem he had with his 67 435 running hot in traffic. We think the guy lived around Warminster or Westchester Pa. Any information that can be provided would be greatly appreciated. Thanks.

Edward-----


Improved flow rate for a waterpump is not necessarily a good thing. If the flow rate is too great the residence time in the radiator will be too short. So, a greater flow rate can actually be detrimental to effective cooling.

In any event, if one has a decent casting not suffering from significant internal corrosion damage + a good cast iron rotor not suffering from significant corrosion damage + the waterpump rotor-to-bowl clearance is set at factory spec, one should have all the flow rate necessary for effective cooling.

[Edward S.]

Re: C-2 Water Pump Rebuild

Thanks to all for your input. My friend is still looking for his original paperwork which I hope will provide an address. Once again, thanks.

[John L.]

Re: C-2 Water Pump Rebuild

Ed -- please post the guys name if you find it -- john lolli

[Greg G.]

Re: C-2 Water Pump Rebuild

[quote=Joe Lucia (12484);357461]Edward-----


Improved flow rate for a waterpump is not necessarily a good thing. If the flow rate is too great the residence time in the radiator will be too short. So, a greater flow rate can actually be detrimental to effective cooling.

I think you're right on with this statement. If it were about flow rate then you could remove the thermostat and increase the flow rate. The coolant has to have time to transfer the heat to the radiator. I would think if you are running a thermostat, that increasing the flow rate would only increase pressure and who knows where that would lead.

Greg

[Marc R.]

Re: C-2 Water Pump Rebuild

Joe L. is always right.

[Joe L.]

Re: C-2 Water Pump Rebuild

Joe L. is always right.

Marc----


I sincerely appreciate your confidence in me, but I would not go that far. I may have a pretty good "batting average", but I don't bat "one thousand". There have been way more than a few times that I've been wrong. I always strive for 100% accuracy but, being human, I'll never achieve it.

[Edward S.]

Re: C-2 Water Pump Rebuild

My original post told the story of a 67 435 that was running hot in traffic and for 6/7 years after the impeller was changed it's running fine. My friend who is considering doing the same thing says that Paragon has a new water pump their selling that they claim increases water pumped by 30%. I don't buy from Paragon anymore so I don't have their catalog. I have asked him to read all the info all of you have been kind enough to supply. Thanks for all your help.

[Joe L.]

Re: C-2 Water Pump Rebuild

My original post told the story of a 67 435 that was running hot in traffic and for 6/7 years after the impeller was changed it's running fine. My friend who is considering doing the same thing says that Paragon has a new water pump their selling that they claim increases water pumped by 30%. I don't buy from Paragon anymore so I don't have their catalog. I have asked him to read all the info all of you have been kind enough to supply. Thanks for all your help.

Ed----

The pump sold by Paragon is the FlowKooler I mentioned previously. This pump is also available from MANY other sources. The only difference in this pump versus a "stock" pump is the fact that it has the "patented" FlowKooler disc riveted to the rear of the fabricated steel impeller (rotor). All NEW waterpumps sold today use a fabricated steel impeller (without FlowKooler disc) and this has been the case for, at least, the last 25 years. Many rebuilt pumps also use a fabricated steel impeller. The performance of a pump with a fabricated steel impeller can be improved by the addition of the FlowKooler disc.

Original waterpumps used for 1955-1971, and probably later, small blocks and big blocks used a cast iron impeller. The Flowkooler disc is not applicable to these pumps. I believe that a cast iron impeller in good condition and properly installed will flow as well as a pump with a later fabricated steel impeller modified by the addition of the FlowKooler disc.

[Edward S.]

Re: C-2 Water Pump Rebuild

Joe,
Once again, thanks for the info, I will call my friend today with it. Thanks to people like you I am learning something new every day.