I saw this heater that threads onto a bolt and you plug it in to a wall outlet. What are they used for?
Head-bolt heaters. There was one in my flathead before i tore it apart, they used one of the bolts that went through a water jacket if memory serves me right. They didn't have softplugs so I guess this was their best option?
Looks like an oil heater (installs in the pan) - may even thread in to replace the drain plug! Great for reducing cold start damage.
cool..does it still work? throw some 6 volts to it and see...or probaby 110 volts like "overspray" mentioned dont hold the end of it too long in your hand
So its definately not this, but once I read the 1st post I thought it may be..... Have you guys seen how large equipment is torqued? They take the studs or bolts and heat them up thus expanding them. Then they tighten the nuts on. Once the bolt/stud cools it contracts and thus torques the fastener. I know there is a chart out there for how hot to heat each sized bolt to get "X" ft/lbs. Kinda cool stuff.
Who told you that? I've been working on Heavy equipment my whole life and I've never heard of or seen that done. Big bolts are torqued just like little bolts. Just use a bigger torque wrench or a multiplier.
My friend's dad worked for Eastern Airlines. He was a pilot but started out an mechanic when you could still rise throught the ranks from wrench to captian. Anyway, he is also a flathead guy. Eastern's old trucks were all flathead powered. When the OHV came around, they got rid of all their stuff. He had boxes of those flathead head bolt block warmers. I had a few, but got rid of them all. Neat stuff.
Yup. You plug it in to 110 ac and it warms up the water in the block for easier cold weather starting. Us northern climate residents are very familiar with "plugging in" the car at night so it starts in the morning. Yes, it was below "zero" temperatures here last night.
I think he meant some different "heavy equipment"....................When I worked in a powerplant, with LARGE by HUGE steam turbines and gas turbines........This was how they did it.................Some of the bolts on the steam turbines were hollow or "rifle drilled", and the bolt heating element was dropped into the center..................When it got hot , the torqueing began, with sledge hammers and striking wrenches, then you check the "stretch" on the bolt when it cooled down..............Biggest damned micrometer I have ever seen to check that!!!!!!!
My grandfather had them installed on his 51 chevy when he went to live in Alaska for 2 years in 1953, where he was stationed. To keep the engine from getting well below zero, they used the head bolt heaters when the car was not running.
Yes that is exactly what I meant, not D7 Caterpillars, but 7-FA General Electric turbines type of equipment, same for large pistons engines in ships.
Ditto, I was involved in a steam turbine rebuild a few years ago at our power plant, and that's exactly how the turbine case halves were held together. About 8 million big ass bolts that had to be heated to removed, since they were heated when torqued. Since the lower half of the turbine was under the deck, the bolts were only about 12" off the cold-assed floor, and I had to take them off, one at a time. It took 12 hrs to do my half of the case. I did NOT volunteer for the next rebuild.
born and raised in alaska,didnt see the pic but we used to have to plug our cars in when we parked them to either keep the oil warm or water,there were block heaters headbolt heaters and oil pan heaters used to be able to buy them at local auto stores and even sears stores believe u still can get them today
I worked one winter in Kapuskasing, Ontario, which is fucking near to the North Pole. At Spruce Falls Paper Company the parking lot for employees cars all had 110 Volt outlets at every parking spot to plug your car in during the 8 hours you were "on shift". If you didn't have a block heater of some kind or forgot to plug your car in, there was no way in Hell it was going to start when you came off shift to go home!!! At some of the mines in northern Ontario, the heavy trucks and dozers had quick disconnects on the top and bottom heater hoses. When the vehicle was going to be shut down for any length of time in the winter, you nosed it up to a docking station and connected the hoses to a set of nipples that pumped heated antifreeze thru the engine from inside the building.
That is actually a very rare, and highly sought after, sexual gratification devise. Sort of goes along with the guy who did'nt, "like his nuts cold". But seriously, I think you got the right answer. And to the transplanted Texan from Alaska; when I was in the USAF at Eielson AFB in Fairbanks, Ak., everyone had block heaters, you would plug them in at storefronts, parking lots, etc, but the biggest thing, were the jet engines being kept running 24/7. Took a while to get used to that while trying to sleep. And, I'm a transplanted Alaskan also. Butch/56sedandelivery.
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