Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

UnFreakinBelievable Overheating

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Old May 5, 2010 | 04:26 PM
  #31  
urban_cowboy's Avatar
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Yes. SBF water pumps come in either standard or reverse flow designs based on your belt design (i.e. v-belt or serpentine).
Old May 5, 2010 | 05:08 PM
  #32  
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Well I say this while knocking on wood but it looks like my pump is setup for a counterclockwise pulley. Talk about chasing your tail, from headgaskets, to radiator to cooling fan this had me totally confused. You just assume your pump is flowing the right direction and the symptoms were just so random.

Still not sure how I got 100 troble free miles out of a backwards pump to begin with but I'm glad I caught it before I took it for a long trip.

For everyones reference its a CWP458 pump.

Anyone need a new counterclockwise pump?
Old May 5, 2010 | 05:22 PM
  #33  
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Originally Posted by urban_cowboy
Yes. SBF water pumps come in either standard or reverse flow designs based on your belt design (i.e. v-belt or serpentine).
+1 do you have the box or a model number for the one you bought? this could very well be the problem
Old May 5, 2010 | 05:28 PM
  #34  
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Yes, I posted it in my last post for everyone's info. Just in case you ever decide to spend $3k rebuilding an engine and trust a 16 year old $8 an hour meathead to pull you the right part.
Old May 5, 2010 | 06:10 PM
  #35  
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Originally Posted by tcrote5516
Yes, I posted it in my last post for everyone's info. Just in case you ever decide to spend $3k rebuilding an engine and trust a 16 year old $8 an hour meathead to pull you the right part.
You could always move to Australia where the pump you have would work properly.
Old May 5, 2010 | 06:17 PM
  #36  
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Originally Posted by tcrote5516
Still not sure how I got 100 troble free miles out of a backwards pump to begin with but I'm glad I caught it before I took it for a long trip.

For everyones reference its a CWP458 pump.
At low speeds on cooler days the inefficiency of the reversed vanes would not be too bad. Sustained speed, on warmer days, and you'd be getting cavitation instead of circulation. Heck, the 289HP had a special pump with curved vanes, to reduce high speed cavitation.
Old May 5, 2010 | 07:02 PM
  #37  
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Originally Posted by scootchu
You could always move to Australia where the pump you have would work properly.
or you could just reroute the top hose to the bottom of the radiator and the bottom one to the top or even just turn your whole engine upside down. cheaper option than moving here and just as effective
Old May 5, 2010 | 07:51 PM
  #38  
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I'd move to Australia but then I would have to swap out my toilets. That may be more work then the water pump swap.

Hmmmm what to do...

On a serious note, my timing cover is from a H.O. 289 on my 68 302 not that that should make any difference.
Old May 6, 2010 | 04:05 PM
  #39  
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Originally Posted by 2+2GT
If you use a Ford thermostat with the air release valve, none of this is necessary.
Necessary ? I don't know about that. It still helps getting out the air faster. Especially if the car has a rack in its stance. Then you have a really level engine, or higher in the back than front. Hole or no, that bubble won't defy physics. Either way, it's still a good idea to leave the cap off to refill coolant as it burps. Otherwise you burp a ton of air and your a 1/2 gallon low.

Last edited by cprstreetmachines; May 6, 2010 at 04:07 PM.
Old May 6, 2010 | 06:18 PM
  #40  
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When will this end????

I just picked up the identical part number to what was originaly on my car from Mustangs Unlimited.

I took off my current pump and removed both back plates. They were identical!!!!

Sooooooooo I pulled the "high flow" thermostat and took it into the house to cook it.

I set it to "Poultry"(180) and it didnt open...so I moved it to "Lamb chops" (190deg...still nothing...then I cranked it to Charbroiled Steak and still nothing.

Well, that actually makes sense, it worked for the first 100 miles and just started pulling this crap.

Putting the "new" old water pump back on and shelling out the $5 for a Ford thermostate.

Sometimes I really suck at life.

One question, could a completely blocked thermostat cause the lower hose to become hotter then the top? I guess it could because that was the only place for the heat to go that wasnt blocked off.

This thermostat does not have a bleed hole.



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