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Reply to "Thunder Ranch build thread"

@edsnova posted:

Interesting observations, @dlearl476. FAIK the Raby DTM has no thermostat nor provisions for same. In my case I've not yet been able to run the engine over the road, so I can't say yet if it behaves similarly to yours—but it's a strong possibility. The gauge and (original) sender that came with it were supposedly matched and calibrated by the good folks at North Hollywood Speedometer, and I have no cause to doubt their work. 

As for oil: Brad Penn "Green" 20-50 is specified (very adamantly, I might add) by the engine's builder. I see no reason to vary that, given his dire warnings.

So the plan right now is to get the car registered and legal & see how she does underway. I'll revisit the issue then, though I do plan to invest in an infrared thermometer in the meantime to spot-check head temps and such.

Just so you know- what's important is combustion chamber temps, hence the reason for the head temp sensor being under a spark plug (bolted to the fuel injection boss, which is close, isn't close enough to give the same information or in real time). An infared thermometer will really only tell you if all the cylinders are firing.

Last edited by ALB
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