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Waterpump with plastic impeller
https://slantsix.org/forum/viewtopic.php?t=18139		 Page 1 of 1
Author:  Skipjaz [ Tue Jun 20, 2006 3:19 am ]
Post subject:  Waterpump with plastic impeller
I am looking for a new or good used waterpump with the plastic impeller.
Thanks, Skipjaz Email: Skipjaz@aol.com
Author:  SlantSixDan [ Tue Jun 20, 2006 9:27 am ]
Post subject: 
You're going to be looking awhile; those were discontinued in 1967. You don't need one, the steel-impeller version will fit your car and work correctly if it is a reputable brand, properly made, properly installed.
Author:  Skipjaz [ Wed Jun 21, 2006 8:26 am ]
Post subject: 
I bought a new pump from NAPA with the metal impeller and installed it properly. The metal impeller binds up on the block. My block is machined with a "bullseye" and the plastic impeller is concave to fit over this area. The metal impeller binds on the center of the bullseye.

I have found the NOS impellers and will have my waterpump rebuilt using one of them.

I have owned 6 Mopars from the 60's, a couple of Model A's a 66 Corvette, a 1937 Plymouth Woodie wagon and I know how to install a waterpump. I dont think I can find a better brand than Napa, but will buy another one from Auto Zone and try it to see if I have the same problem. I will report back. Thanks, Skipjaz
Author:  DusterIdiot [ Wed Jun 21, 2006 8:52 am ]
Post subject:  You will
Quote:
but will buy another one from Auto Zone and try it to see if I have the same problem. I will report back.
I pulled the water pump out of my '67 and it had the metal "disc" type impeller (and was corroded bad and squeeled), a new Autozone one has the "new" star style impellers like the 70's cars have.


FYI,

-D.Idiot
Author:  SlantSixDan [ Wed Jun 21, 2006 9:09 am ]
Post subject: 
Quote:
I bought a new pump from NAPA with the metal impeller and installed it properly. The metal impeller binds up on the block.
So you mentioned, and I answered you in detail in this thread—go read it.
Quote:
My block is machined with a "bullseye" and the plastic impeller is concave to fit over this area.
I think if you look closer (and chip away at that "bullseye" with a chisel) you will find it's not actually cast metal, but rather built-up and compacted corrosion and trash. Clean it off the block and the new pump will fit for ya.
Quote:
I have owned 6 Mopars from the 60's, a couple of Model A's a 66 Corvette, a 1937 Plymouth Woodie wagon and I know how to install a waterpump.
I'm sure you do, but I'm also sure the slant-6 blocks were not cast or machined with a convex bullseye such as you describe.
Author:  Skipjaz [ Thu Jun 22, 2006 4:29 am ]
Post subject: 
I finally understand what you mean, I will look at my block when I get home from work. You are saying that my waterpump created the bullseye from crust and corrosion over the years. I hope it is that simple!

Thanks again, Skipjaz
Author:  SlantSixDan [ Thu Jun 22, 2006 7:40 am ]
Post subject: 
Quote:
I finally understand what you mean, I will look at my block when I get home from work. You are saying that my waterpump created the bullseye from crust and corrosion over the years.
I believe that is the case!
Author:  SlantSixDan [ Wed Jun 28, 2006 7:54 am ]
Post subject: 
Grabbing a pic from DD to show you what the water pump scroll area looks like without a conical buildup of compacted crud:

Image
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