3400 engine heater

I have a 3400 Ford 3-cyl. diesel. I have been using tank type heater in line from rear of block to above water pump. I used to get about years out of a Kitts heater. Now I'm lucky to get a month or so. I believe I have always hitched it up the same. I'll try to post pictures.
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I would recommend you use longer hoses and get the heater down lower and make sure it is mounted with the inlet and outlet up so there is less chance of an air pocket.

Mark
 
I always have mounted it this way and used to work good. I wonder how the new are. Would a freeze plug heater work better, if so which freeze plug on the diesel ? Thanks
 
The block heaters work much better than the tank heaters. If I remember correctly some had a threaded in plug and some had a regular expansion plug.

Mark
 
The mounting is not correct, it should be vertical for good circulation, I would use a frost plug heater on it and be done with it.
 
You can go to the CNH parts website, you can get the block heater from them.

Ultra dog might have a third party part number.
 
I have decided to go with the freeze plug heater. The only freeze plug I can find is behind starter. Is there enough room to install one there ?? Thanks, I had a freeze plug heater in a perkins diesel and worked find.
 
It does look to me like the heater should be flipped over on the bracket so the outlet is in the highest place, not the best but better than this.
 

Heater is located too high, near the top of the water jacket so there is no place for the hot water to go and it over heats... Locate it low and vertical to allow hot water to go up and bring in cool water. This is what is was designed to do.
 
If they used to last a year I wouldn't consider that working good. And remember heat rises, gotta have it down low or it won't be able to heat the whole block and just will overheat
 

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