Hey guys, sorry I dipped out for a bit right after that post...
So the Mishimoto T-stats were only 5*C less than the stock thermostats...
So, IIRC that's 80*C and 85*C vs 85*C and 90*C
I'll have to double check to be absolutely sure...
The difference seemed nominal enough to me, I didn't get them for performance tho...
My understanding is, the whole performance gain theory behind running a lower t-stat only works for a small window of time, no matter what temp the t-stat opens at your engine and coolant should still eventually hit its static operating temp which is dictated more by the volume of fluid in the system, how well it can dissipate/shed heat and ambient temps than by what temp the thermostat opens...
I've got a 160*F thermostat in my SS, it opens sooner and keeps the coolant temps lower for a slightly longer time, but no matter what my engine temps still eventually hit 190-210 depending on what I'm doing...and stabilize there.
I couldn't tell ya why I'm having heater issues in the cab now, all I know is it's friggin cold outside and my heat doesn't want to work unless Im driving under 45mph, pull a hill, or if I keep the block heater plugged in and he coolant is warm already I can pull heat.
But if I'm going 60-65 on the freeway, fogettaboutit, I freeze my AZZ off!
Lol