Today I received (and installed) MotorRad Thermostat Part No. 2340-195 (High Flow, 195F thermostat)
This is the "High Flow" version with larger opening for water to flow.
Standard Thermostats have a 30mm opening. These High flow thermostats have a 34mm opening.
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After installing the new thermostat, I re-added the exact same coolant that was drained from the system.
Here are my results.
The High Flow thermostat opens later than the one I removed. Both are 195F thermostats but the high flow thermostat seems to open later, at 200F. During a 60mph run, the high flow thermostat never allowed the coolant temp to drop below 199F. With the normal thermostat I removed, the coolant temp would usually fall to 192F during a 60mph cruise with temps slightly warmer than they were today. That does not bode well for the high flow thermostat as there seems to be a significant deviation in the advertised open set point and the actual open set point of at least 5F.
While sitting with the AC on full blast, it did "seem" to take longer for the engine to heat up than on other days, but today was about 5F cooler than the last few times I observed the temps while sitting so I cannot attribute this to the new thermostat.
Overall I am disappointed with the MotorRad 2340-195 'High Flow" thermostat. it did not deliver a noticeable change in coolant temps and actually may have raised them slightly due to a defective higher than advertised low temperature set point. Perhaps I got a bad one. I have read that Motorad thermostats are very hit or miss and that you get a bad one about as often as you get a good one.
The only possible circumstance that might change my review is if for any reason the cooling system hasn't "burped" all the air out yet. For that reason I'm going to leave the thermostat in for now and try removing any possible air in the system and try again in a few days. If the situation changes I'll let you know.
If you decide to try one and get different (hopefully better) results, please post it. Thanks
This is the "High Flow" version with larger opening for water to flow.
Standard Thermostats have a 30mm opening. These High flow thermostats have a 34mm opening.
After installing the new thermostat, I re-added the exact same coolant that was drained from the system.
Here are my results.
The High Flow thermostat opens later than the one I removed. Both are 195F thermostats but the high flow thermostat seems to open later, at 200F. During a 60mph run, the high flow thermostat never allowed the coolant temp to drop below 199F. With the normal thermostat I removed, the coolant temp would usually fall to 192F during a 60mph cruise with temps slightly warmer than they were today. That does not bode well for the high flow thermostat as there seems to be a significant deviation in the advertised open set point and the actual open set point of at least 5F.
While sitting with the AC on full blast, it did "seem" to take longer for the engine to heat up than on other days, but today was about 5F cooler than the last few times I observed the temps while sitting so I cannot attribute this to the new thermostat.
Overall I am disappointed with the MotorRad 2340-195 'High Flow" thermostat. it did not deliver a noticeable change in coolant temps and actually may have raised them slightly due to a defective higher than advertised low temperature set point. Perhaps I got a bad one. I have read that Motorad thermostats are very hit or miss and that you get a bad one about as often as you get a good one.
The only possible circumstance that might change my review is if for any reason the cooling system hasn't "burped" all the air out yet. For that reason I'm going to leave the thermostat in for now and try removing any possible air in the system and try again in a few days. If the situation changes I'll let you know.
If you decide to try one and get different (hopefully better) results, please post it. Thanks
