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John T
01-12-2003 08:46:37
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Re: hot torque head bolts will it work in reply to Mike j, 01-12-2003 06:58:33
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Hey Mike, Im an Electrical, not a Mechanical or Thermo Engineer, but learned a little of that heat transfer stuff way way back years ago and will offer some small insight at least. I doubt if that block heater will sufficiently raise the temperature of all that iron and bolts and studs in all the right places to ever achieve the same affect as a total and complete engine running warm up. It can raise the temperature of the coolant of course, especially right at the heater, but to achieve the temperature rise and warm up and resulting expansion of all that iron and studs and bolts and nuts etc., the same as the engine running, I dont think will ever happen using a block heater. Even if it heated all the water (which it wont at greater distances form the heater) in the head and block to say 150 degrees, it would take a lot more energy (Watts) over an extended period to achieve heat transfer into and raise the temp of all that iron the same as a running engine. Once enough energy and heat transfer was put in to raise the coolant temp, then that relatively colder block and head mass is gonna be suckign off that heat and dissipating it into the air faster than its coming in, thus failing to raise the temp of that tremendous mass of iron as a runnign engine. The block heater helps and does warm the coolant and some amount of the immediate surrounding iron, but I just dont think it can raise the temp of all that mass and bolts and studs etc the same as the many times over heat energy developed by internal combustion. Anyway, thats my story and Im sticking to it, regardless if incorrect, which it may well be lol. We need a mechanical or thermo type engineer who can compute all the mases and temperatures and heat energy and delta T etc, and im sure not that. Good Luck, Ol John t Nordhoff
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