Identifying CB/NCB water pump

[Anonymous_User]

Got the daughter's Shadow started this morning in the sub-sub-sub-zero temperature. Had it idling in the drive while I worked on starting the truck. I noticed the windshield was not de-icing.

Upon investigation, the upper radiator hose was not hard. The radiator cap was cold. The temp gauge was at 3/4. I popped the radiator cap and got a gush of coolant. The gauge came back to normal.

There is NO heat in the lines to the heater core.

Car is a '88 Shadow TBI which has had at some point a turbo CB engine installed with the TBI manifolds.

I NEVER even thought that the person that did the swap may have reused the old, pre CB water pump.

How to identify what pump is on there? Can I just swap the pump? Will I need a CB WP pulley and/or housing?

Craptacular.

[Anonymous_User]

Adding:

Just looked again - damn its cold out there - the water pump pulley is grooved. I can't see much else 'cause its behind the AC tensioner.

[ShelGame]

The grooved pulley is non-CB. CB uses a smooth pulley. But, to tell on the pump; looking from the front of the engine, on the CB the 'scroll' goes counter clockwise. On a non-CB, it's clockwise.

[shelbydave]

It shouldn't matter as long as it's turning the correct direction for that pump right? If it's the early one (grooved pulley, non CB pump) the belt should go around the pulley, and on the common block waterpump, the belt should just go past the waterpump pulley and go around the alternator, so the back side of the belt is turning the pulley...right?

[Anonymous_User]

It shouldn't matter as long as it's turning the correct direction for that pump right? If it's the early one (grooved pulley, non CB pump) the belt should go around the pulley, and on the common block waterpump, the belt should just go past the waterpump pulley and go around the alternator, so the back side of the belt is turning the pulley...right?

I think that is correct.

Can you put a non-cb pump in a cb housing or vice versa.

I guess now, I think they left the CB pump on the engine and put the grooved pulley on it from the '88. Is that possible?

OK, now I just gotta figure out what I need to do. I have plenty of non-cb pumps, housings, pulleys. I also have CB stuff laying around. If I make sure it is ALL pre-CB, I'm good to go, right? Otherwise how much would I need to change accessory wise to use the CB pump?

[Johnny]

This very interesting to me too.
I wonder if a car I have had this very thing happen.
Would the car not heat up? Or over heat?

[Anonymous_User]

This very interesting to me too.
I wonder if a car I have had this very thing happen.
Would the car not heat up? Or over heat?

See first post for symptoms. there is definitely no flow through the cooling system. When I popped the cold radiator cap with a hot running engine, the coolant could get back from the engine to the radiator.

CB engine. Non-CB water pump PULLEY on the INSIDE of the belt. Hopefully all I have to do is put on a CB pump pulley and the proper belt.

[shelbydave]

I had asked a similar question earlier, but didn't find the post till now.
http://www.turbo-mopar.com/forums/showthread.php?t=29822

Down through the posts there are pictures comparing the CB and non-CB waterpumps. Hopefully, you can compare the pics with what you got, and put on the correct pulley.

Will a CB pulley fit on to a non-CB waterpump? If so, who was the MIT grad who designed that??!!?? :confused:

[Anonymous_User]

Thanks! Those pics definitely help. I'll hafta pull the AC tensioner and take a look at WTH is on there. Looks like the same 3-bolt pattern on both pulleys.