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Yet an even higher flow thermostat? I just received a PM tipping me off to what appears from pictures to be an even higher flow thermostat than the Stant stat that I have previously found to be the highest flow of any that I've studied. This one is a MotoRad High Flow Thermostat (their part # 2003-195) that also fits the 1990 Subaru Justy and the Ford 59A engines like the Stant 14157 does. I would probably be interested in them if they weren't 195°. For any that likes running their 59A that hot it looks like the best thermostat I've seen so far.
Here are the two thermostats side by side. The Stant on the left and the MotoRad on the right. What do you think? http://i1059.photobucket.com/albums/...psfaysetgc.jpg |
Re: Yet an even higher flow thermostat? 170?
Also looks like new one has three on top & stant two - three would restrict flow more than two - no? Looks like you have your work cut out for you:) |
Re: Yet an even higher flow thermostat? http://www.carid.com/motorad/high-fl...-2003-195.html
The link shows they flow 56 GPM and open at 195 degrees. Are you going to measure the actual flow and if so how? I got a pair of 36 pumps from Skip, I don't know what they are rated at. I am curious what you discover. |
Re: Yet an even higher flow thermostat? Quote:
Look close at the size of the center core. . |
Re: Yet an even higher flow thermostat? I just googled this part # 2003-180 thermostat and I got pics of the same thermostat rated at 180.
https://www.google.com/search?q=part...w=1280&bih=899 |
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That's cool. I might be persuaded to run at 180°. |
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I had that same thought that the three wide braces may cut into the flow more than the two skinny ones on the Stant even though the overall diameter of the valve opening looks bigger on the MotoRad. I'd have to measure and calculate the size of the MotoRad's three openings and compare their total to the Stant total opening. Could be sixes. |
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Re: Yet an even higher flow thermostat? Is this flow tested with the thermostat setting in a tube like the neck of the head----if the disc is too large the area between the neck in the head and the disc could be the flow limit
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Re: Yet an even higher flow thermostat? |
Re: Yet an even higher flow thermostat? According to a 2013 thread on the Barn Skip's pumps with the high speed impeller flow about 22 GPM. If that is true what is the advantage of a stat that flows 56 GPM? Assuming the stat functions properly it would seem that the water pump is the restriction to a higher flow rate in the cooling system and not the stat.
"Foxy, Skips email is [email protected] Phone # AM 1-941-637-6698 PM 1-941-505-9085 Lucky, The 37 to 53 pumps all get the turbine impellers that increase the flow of each pump from 65 gallons in 5 minutes to 110 each. G.M." |
Re: Yet an even higher flow thermostat? Why do you want more flow? From what I've learned about cooling systems you want restriction in the flow.
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Re: Yet an even higher flow thermostat? Quote:
a hole the size of the opening in any of the thermostats shown with stock Ford pumps that are just paddle wheels spinning in water?? When the stock pumps feel a restriction they just sit there spinning their wheels and stirring up air. Skips pumps with larger impellers deliver more water and less air. The turbine type impeller is set in a 22 degree seat with a controlled gap and very little air and slippage occur. The reported improved cooling over the past 20 years confirm the results. G.M. |
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of coolant in the system. The amount of coolant flowing through the system. And the amount of air flowing through the fins of the radiator. If any one of these is improved a little better cooling is noticed. If all all are improved then the engines will run cool. I have performed cooling tests on flatheads for many years in SW Florida in temperatures above 90 degrees. I have a 39 P/U that was run at a National Ford meet in Maryland in about 2004 for over 2 hours at a fast idle with the outside temperature over 100 degrees and never got over 180. When raced slightly the temperature dropped a few degrees. This truck was fitted with Skips pumps, 6 blade industrial fan, standard radiator, 4 lb pressure cap and a shroud. Temperatures were taken every 10 minutes on the water outlets of the heads and recorded. Don't believe water has to stay in the radiator to cool it, that will just make it hotter. G.M. |
Re: Yet an even higher flow thermostat? G.M. I have a Meziere 300 electric water pump on a supercharged Hemi that the manufacturer claims will flow 55 GPM. With this pump there would be a need for a stat that flows 56 GPM to minimize the potential for cavitation. My point in this discussion is there is no apparent need for a stat that flows 56 GPM when the best the pumps can do is 22 GPM. My observation is in no way a discredit to Skips pumps or his design. In fact I'm using them on the tonner, but they are in fact the limiting factor for coolant flow on my flathead. As an aside what RPM did Skip use to establish the flow data you provided (110 Gal in 5 minutes) in that thread? Just curious.
Les Williams |
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Re: Yet an even higher flow thermostat? Some additional info from Stant.
"The Stant Superstat has the highest flow of any thermostat in the aftermarket." "A thermostat starts to open at the rated temperature +/- 2 degrees F. The thermostat is fully open at 15 to 20 degrees F above the rated temperature." That means the Stant 14157 starts to open at 170 and is fully open at 185-190 degrees. Craig, I sent another PM before finding your new thread. |
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How do you figure Skips pumps limit your cooling??? G.M. Email my I'd like to discuss it. [email protected] |
Re: Yet an even higher flow thermostat? Craig, your PM box is full.
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