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Old 08-08-2013, 09:33 AM   #21
JM 35 Sedan
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Join Date: May 2010
Location: Near Rising Sun, Maryland
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Default Re: To Stat or Not To Stat? That is the question.

The instructions that came with the last three sets of pumps that I had rebuilt by Skip said...."Do not use thermostats in temperatures above 65° with these high volume pumps. In winter or cold temperatures a 160 degree is recommended with a maximum of 180. Do not use any thermostat with an internal opening when fully open of less the 1-1/4" inside. Any restriction or restrictor will impair the cooling with the use of these pumps".

I am running original equipement open center type thermostats in my '35 fordor. Have not had any major cooling problems with these pumps and thermostats in the last 20,000 miles
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