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Bob Bidonde · 01-27-2014, 03:33 PM

Jason,

This is a great topic. In my opinion, the stock Model A water pump has very poor reliability. I drive my Model A on the highways in excess of 50 mph.... I will admit to some 70 mph spurts...and I know that sustained highway speed kills water pumps.

I have tried all of the combinations of bushings, bearings and seals, and none of them have had any longevity in my case. The Model B pump is no better, and in fact I think the Model A pump is superior to the Model B pump.

I have not tried it yet, but Jim Rupert's "XD" Leakless Pump looks like it should be the best of the bunch. Thanks for posting the cutaway picture of the XD.

01-27-2014, 03:33 PM	#61
Bob Bidonde Senior Member Join Date: May 2010 Location: Long Island, NY Posts: 3,472	Re: Lets talk leakless water pumps! Jason, This is a great topic. In my opinion, the stock Model A water pump has very poor reliability. I drive my Model A on the highways in excess of 50 mph.... I will admit to some 70 mph spurts...and I know that sustained highway speed kills water pumps. I have tried all of the combinations of bushings, bearings and seals, and none of them have had any longevity in my case. The Model B pump is no better, and in fact I think the Model A pump is superior to the Model B pump. I have not tried it yet, but Jim Rupert's "XD" Leakless Pump looks like it should be the best of the bunch. Thanks for posting the cutaway picture of the XD. __________________ Bob Bidonde