[Healeys] Heat management

[Bob Spidell]

As long as we're on the (neverending) topic of heat management--thermostats, etc.--has anyone done a before/after analysis of manifold/downpipe ceramic coatings (JetHoat, etc.) and the effect on engine temps? I know we've discussed it before--and there seems to be some anecdotal, positive results--but does anybody have any definitive info to add? 

I wrapped my downpipes, and the net result was seemingly hotter gases at the exhaust exits--I didn't actually measure the temps, but the exhaust went from hot to pistol hot--circumstantial evidence that more heat is being moved away from the engine compartment. I can't say I saw a measurable decrease in coolant temp, but unless you do before/after testing under identical ambient conditions it's going to be subjective at best. 


bs 

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Bob Spidell - San Jose, CA