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Farmall & IHC Tractors Discussion Forum
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Block Heaters.....

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Dellbertt

11-28-2005 12:45:25




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Hal brought up something during the impulse coupler discussion that interests me.

My Case 1030 has a built in heater( I think it heats the water)I plug it in and I hear it cracklin and poppin as it warms up.

For my 300U snow pusher whats the best add on preheater..the dipstick..magnetic block heater..water line... Which add-on heater works best and worth the $.




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Dellbertt

11-28-2005 17:48:22




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 Re: Block Heaters..... in reply to Dellbertt, 11-28-2005 12:45:25  
In all small airplanes the exhaust stack faces straight down. There are lots of commercial heaters that fit onto the exhaust pipe and blow hot air up into the engine to preheat. Some guys use cheap($8) hair dryers and jerry rig their own. Thinking of trying something like that for the 300U. Just blow hot air down into the exhaust pipe. It should circulate ok. Worth a shot anyway.



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Jimer

11-28-2005 15:55:28




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 Re: Block Heaters..... in reply to Dellbertt, 11-28-2005 12:45:25  
I have a 300u and was facing the same problem you have, what kind of heater? I could not find any "core plugs" in the block, found it next to impossible to put a lower radiator hose heater in it (no room, in fact tried but ended up with about 1" of space for the heater) so I ended up buying a 300 watt magnetic heater. Of the people around here I have asked, they work, but not like heating the water.

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Hugh MacKay

11-28-2005 14:28:42




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 Re: Block Heaters..... in reply to Dellbertt, 11-28-2005 12:45:25  
Dellbertt: You'll probably get as many preferences as there are heaters. The one I always liked was the external circulating heater. They only worked well in applications where you could hook inlet to a block drain and hook the outlet to a port in the water jacket of the head. that kept the canister upright and created a thermosyphon type of circulation. Hot water rose to top and entered the head then flowed down through block to the block drain and inlet to heater. Most Deere diesels of the 70 and the IH 282 diesels were great candidates. These were available anywhere from 750 to 1500 watts and had a thermostat. I used the 1500 watt in my 2 - 282 and my 404 Deere. At -30F you could plug them in about 2 hours before you wanted tractor and it was a summer like start. What I liked about these, I rarely used my tractors in winter, thus one didn't need to leave them plugged in. I had the frost plug type in my 1066, worked well but at -30F it had to be plugged in overnight. These tank type sounded like the electric tea pot on 40 years ago, you could actually hear them bubbling.

My recomendation is look at your use, if your starting that tractor every day, I'd go with the frost plug type and leave it plugged in all the time. For ocasional use I'd pick the tank type, they draw a lot more juice per hour, but they are quick.

Now, I have a question, anyone have any experience with propane or oil fired circulating heaters as being used on large diesel trucks?

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Quebec Red

11-28-2005 17:34:10




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 Re: Block Heaters..... in reply to Hugh MacKay, 11-28-2005 14:28:42  
If you could plumb a recirculating heater such that the heated coolant will enter the block from the bottom rather than the top, your motor will warm much faster. Consider using the radiator drain as source for heater intake, and the block drain or a frost plug as entrance to motor. This will work much better. Heat rises. QR



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Hugh MacKay

11-28-2005 22:28:59




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 Re: Block Heaters..... in reply to Quebec Red, 11-28-2005 17:34:10  
Red: Exactly, heat rises and it doesn't matter which way you hook them heat still rises. The direction that came with the heaters I used recomended doing as I suggested in my earlier post. They also recomended hooking to ports near the center of block, especially on 6 cylinder engines. That was 30 years ago, so no doubt there may be different systems and directions today.

I do know of a situation, where one of these heaters was hooked into hoses to the rad top and bottom. It never did anything but heat the coolant in the rad. I never saw it, so can't say which way they had it hooked up. They came to see how my heaters were hooked up, and were very surprised to find engine block warm. My heaters worked very well, and with a diesel it only makes sense to have the hottest coolant in the head.

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El Toro

11-28-2005 15:50:41




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 Re: Block Heaters..... in reply to Hugh MacKay, 11-28-2005 14:28:42  
Hugh, The military uses a lot of those diesel fired circulating pumps. They were designed to draw very low current from the batteries. The
test temp was -50 F & most vehicles started at this temp. The Soviets used what looked like a mini boiler. It was gasoline fired and this vehicle had twin 6 cylinder engines. The boiler heated the coolant and they had the oil pan shrouded with sheetmetal to let the exhaust heat
warm the oil. With 10 minutes of heat at -65 F
both engines would start like summertime. Hal

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Janicholson

11-28-2005 13:08:43




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 Re: Block Heaters..... in reply to Dellbertt, 11-28-2005 12:45:25  
I like the in the block heater. It replaces a Core plug (often mistakenly refered to as a freeze plug, they allow the foundry to remove core sand after the casting hardens). They are tidy in installation, and work directly. It is necessary to put it into a hole that has room behind it. (I'm not sure what core hole on a 340 is used)
JimN



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