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Purdy Swoft · 01-23-2018, 08:24 PM

As a general rule , the model A water pump over pumps Years ago , Snyders recommended grinding off the tips of the water pump impeller to reduce the pumping action I think that about 1/3 of each impeller tip is recommended . Snyders offeres a cut down impeller . It has worked real good for me . None of our model A's run hot !!! I also agree with post#2 . The motor meter and quail radiator caps are the very worst to leak . I used red high temp silicone sealer under the cap gaskets when I run thermo quail caps and it helped . It has been said that the new repro radiators don't flow as well as the original radiators . Its not likely that the head gasket is the problem . I would explore every avenue before considering removing the head . I've seen way too many head studs wrung off in the block .

01-23-2018, 08:24 PM	#5
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,099	Re: Help with radiator cap spray As a general rule , the model A water pump over pumps Years ago , Snyders recommended grinding off the tips of the water pump impeller to reduce the pumping action I think that about 1/3 of each impeller tip is recommended . Snyders offeres a cut down impeller . It has worked real good for me . None of our model A's run hot !!! I also agree with post#2 . The motor meter and quail radiator caps are the very worst to leak . I used red high temp silicone sealer under the cap gaskets when I run thermo quail caps and it helped . It has been said that the new repro radiators don't flow as well as the original radiators . Its not likely that the head gasket is the problem . I would explore every avenue before considering removing the head . I've seen way too many head studs wrung off in the block .