Re: About the thermostat - "High Performance" Version? - Saab 9000 Bulletin Board - Saabnet.com
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Re: About the thermostat - "High Performance" Version?
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Posted by sam96CS [Email] (#852) [Profile/Gallery] (more from sam96CS) on Thu, 28 May 2015 14:41:48 Share Post by Email
In Reply to: Re: About the thermostat - "High Performance" Version?, Bill Homer [Profile/Gallery] , Thu, 28 May 2015 13:46:59
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I was wondering what a "high performance" thermostat does. Per Motorad it flows 56 gallons per minute vs. 37 gallons per minute for the standard thermostat at 15 psi of pressure. A must-have for towing a trailer at 90 mph across the desert.

I think the 2065-180 is the high performance version of the 265-180. Amazon won't tell you this because either they don't know or they don't want to be a party to a mod that could affect emissions.

But if you do some digging you'll find a link like the one below that for the same Chevy S10 engine lists the 265-195, 265-180, 265-160, 2065-195 and 2065-180. That's 5 MotoRad options that fit the same hole, 3 with the standard flow rate and 2 with the high flow rate.

MotoRad wants to stay out of trouble, so they list only the 265-195 and the 2065-195 for the 4.3L V6 in the '03 S10. It's all about emissions.

The real issue is whether it operates in 2 positions (closed and open) or 3 positions like a Saab thermostat should. The middle position allows flow both to the heater core and the radiator to provide cabin heat and cool the engine. If the 2065-180 lacks this position, then your engine will be cool and you will be also in the winter.

MotoRad Thermostats for 4.3L Chevy S10 2003

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