I believe the only difference of any importance is which impeller it has.
There is the steel sheet metal impeller with bent tabs, and there is a cast
impellor that is deeper and has curved blades which provides a higher flow
rate. I can't give any application info for this pump, but it was a must have
for our race engines. You must always check to see that the larger impeller
will fit and turn in the block during assembly, and sometimes we would have to
provide some additonal clearance for it. A used pump should have no play, no
bearing noise, and have a slight resistance to turning if the seal is good.
John
Fogelsville, PA
--- On Sun, 3/13/11, Leo <60bugeye@cebridge.net> wrote:
From: Leo <60bugeye@cebridge.net>
Subject: [Spridgets] 1275 water pump
To: "'Spridgets'" <spridgets@autox.team.net>
Date: Sunday, March 13, 2011, 11:22 PM
Other than the obvious, one is steel and one is aluminum, is there a
difference between the cast iron pump and the aluminum? Does one provide
better cooling than the other as in move more water? The pumps are the same
for all the motors aren't they?
Any way to test the pump before installation? Have an NOS cast iron one and
was wondering about its reliability versus a brand new modern built
replacement pump from VB
Thanks
Leo
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