INTENSE and ZZP both offer the same Tstat. It'* superior to 95% of the market. The reason is simply because the open diameter is larger than the traditional '2-point' Tstat most places offer.
Yes, it is compatible with the S1, and yes it is a big benefit. Simply going to that style with a 195 would be better than what you have.
Left: Standard HIGH quality Stant 180. Right: INTENSE 160 (heavily drilled).
Originally Posted by willwren
Difference between the thermostats is indeed the diameter of the opening when it reaches temperature. The INTENSE thermostat should flow just shy of 10% more than the Stant I had in there. So I drilled some carefully calculated bypass holes to make up the rest, and should have made up the flowrate and cooling efficiency I lost when I so greedily pursued the 6-8 horsepower the underdrive water pump pulley gave me.
I am now in the NON-enviable position of having seasonal thermostats. One of them for 4 months of the year, the other for the rest.
Zilla will not have to change thermostats twice a year. Zilla gets to go into the shop all winter, and not emerge until spring.