On Sun, 06 Feb 2005 22:53:59 GMT, "Billgran"
wrote:


"BSCHNAUTZ" wrote in message
...
It was actually for an 1970 307
Gm motor, got it for 25.00 new... What I'm now wondering is will it
mater if it (waterpump) was designed for a boat or car, are there any
differences, is the rotation differnt???? Just want to make sure before
installing it and running the motor.. Thanks for any info you guys can
give me....

Radman............


The rotation would be the same. But the "Marine" version pump is usually
"powder coated" on the inside as well as the out to prevent rust and
corrosion.
PLUS the bearings on the marine egine are usually sealed better and pre
lubed.
something that isn't found on automotive units because the car versions
rely on
anti-freeze to work as a lubricant and plus anti-freeze doesn't rust.

That's the main difference.

I'd say your pump will probably last a season. But I'd go with the others.
the
OEM Marine version is the way to go.



A true marine circulation pump has a heavy cast iron impeller with straight
blades so it will work in either rotation motor. An automotive pump usually
has a stamped sheet-metal impeller with angled blades for "left hand" normal
rotation engines. Also the thin steel impeller will quickly corrode away in
a sal****er motor, causing a hard to find overheat problem.

Bill Grannis
service manager


Good to know. Thanks Bill.

John H

On the 'PocoLoco' out of Deale, MD,
on the beautiful Chesapeake Bay!

"Divide each difficulty into as many parts as is feasible and necessary to resolve it."
Rene Descartes