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factory race 13b water pump question

Old 03-05-06, 08:27 AM
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factory race 13b water pump question

I'm restoring my Can-Am car (ran mid-late '80's), just getting to the plumbing stage. The factory race aluminum water pump housing does not have an integral t/stat, so no provision for blanking sleeve or temp operated flow restriction. Wondering if this is designed into these castings or did these cars (mid '80's IMSA RX7)run some kind of remote t/stat?
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Old 03-05-06, 01:50 PM
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Mazda generally recommends no thermostat in race applications.
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Old 03-05-06, 08:35 PM
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Doesn't the front housing have an attachment point for the upper radiator hose? The 'stat is under there. I think the recommendation is to plug the bypass opening with a 1/2" NPT plug, gut an old thermostat and install that. If you leave it open, the water will cavitate in the pump.
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Old 03-06-06, 01:05 AM
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The race pump doesn't have the bypass IIRC.
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Old 03-06-06, 07:03 PM
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the "race" setup uses no t-stat(as there is no where for it to go). this is not a modified OEM or stock housing. it was designed for racing so there is no need to modulate the water temp.
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Old 03-06-06, 09:03 PM
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Race cars run the water system unregulated; race cars control the cooling airflow to control water temp.

I still want to see pics of your car.
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