I recently purchased a leakless ball bearing type water pump for my 1930 model A. On the water pump installation instructions it says to grind the immpeller if the Radiator is repo. Now how do I know if my radiatoris a repo or the original?
The original 1930 radiator had dimpled fins between each of the tubes if you look at it from the front.
Even if you have an original radiator, chances of the flow rate being at capacity are pretty slim unless all of the tubes have been rodded out. I would grind the impeller regardless.
Date Added: 05/22/05