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Author Topic:   Heeelp with Water Pump!

Posts: 23
From: USA
Registered: Oct 2001

posted 12-01-2001 08:50 PM     Click Here to See the Profile for MidLifCrisis   Click Here to Email MidLifCrisis     Edit/Delete Message   Reply w/Quote
It was 70 degrees today in Maryland. Took the '67 covertible out and she overheated when I parked it.
I bought it with a recently replaced water pump with a clutch fan that is about 2" from the radiator. All the stock fans are within 1/2 to 1". I was given a stamped steel blade and aluminum spacer from a '65 coupe to move the fan closer but it would not fit. The bolt holes are 1 1/2" center to center on the steel blade and spacer, but are only 1 1/4" center to center on the water pump flange on my car.
Could this be a late model pump with a small flange for a 302 or 5.0 car? If it is a late model that used a serpentine belt would it cause the pump to spin in reverse on an earlier model like my '67? I thought I had read that somewhere but cannot find it.
I want to get this thing corrected. I think it is either the fan is too far from the radiator, or the water pump is wrong. It was suggested to use a fan shroud, but the fan doesn't extend far enough for one.
Please enlighten me. I need to solve this riddle and get this car to run as dependable as Ford intended. Thanks in advance for any and all help. Charlie

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Posts: 1800
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99

posted 12-02-2001 12:56 AM     Click Here to See the Profile for kcode   Click Here to Email kcode     Edit/Delete Message   Reply w/Quote
If your existing water pump was a reverse rotation, the lower water outlet would be on the drivers side. The standard flange for a small block pump 65-65 has the holes 1 1/4 apart or on a 1" radius. The fan and spacer must be from some other application. I checked Bob Mannels book for an application like you describe with the fan with no luck.

You can always get a flexfan and universal spacer at a parts house. 17" flexfan move alot of air.


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Posts: 1125
From: Auburn, AL.
Registered: Jan 2000

posted 12-02-2001 01:14 AM     Click Here to See the Profile for cpmaverick   Click Here to Email cpmaverick     Edit/Delete Message   Reply w/Quote
Mike's right. Also, the reverse rotation pumps have a bigger fan bolt pattern than the regular rotation versions, so the pulleys don't interchange (although some aftermarket pulleys are slotted; which really confuses things).

If the fan is that far away and you have no shroud, I'd say that is definitely your problem.

-Charlie Ping
1970 Maverick Grabber
[email protected]
Daily Driver

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Posts: 23
From: USA
Registered: Oct 2001

posted 12-02-2001 05:12 AM     Click Here to See the Profile for MidLifCrisis   Click Here to Email MidLifCrisis     Edit/Delete Message   Reply w/Quote
Mike & Charlie
Thanks for clearing things up. Confirming that the 1 1/4" bolt pattern is correct for the early models removes a couple of the variables from the problem. Now I am confused as to where my buddy got the fan and spacer he gave me if it is the wrong bolt pattern. He is a Ford man and a former Mustang owner. I know he was cleaning out his garage, but I didn't think he would give me something from perhaps a big block. I'll have to give him a call later today and give him the third degree.

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