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Coolant Heater Install
- Thread starter 89Suburban
- Start date
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Essential tool there.
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Wow man! You are so detailed. I like it!! 
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I like it. I also think you chose the right placement. As you said before, heat rises, so it should heat both the radiator coolant the engine coolant.
crazy4offroad
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Damn man, your radiator and that upper hose is in bad shape! Looks like you got er done though!
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........Yet another great tech write-up.....I may end up trying this out.
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I wanted to mount it closer to the pump outlet but the hose was too big right there. If I were to do this again I would have ordered the 1 3/4" dia heater so it it would fit the hose right at the pump outlet. So insted I had to go down about 6-8 inches as you can see to where the hose shrunk down closer to 1 1/2".
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Upper hose seems fine to me, felt ok, no cracks. If I had the cash I would have replaced both hoses while it was apart. I didn't realize how much chalk was on that radiator until I took the upper cowling off, and it really comes out in digital pics. It's never wet thought, so it must just barely weep out and dry right away?
That camera is a really great tool for showing things you would normally miss, I really recommend it for troublehooting of any kind of repar or leak detection. I used it to find an exhaust leak on my outboard motor, that you could not see with the naked eye.
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Startup Test # 1
Ok, first day of startup test for heater. Air temp was around 26* at 9:28 this morning at test time. (The time stamp on the camera is apparently off by 12 hrs.) Truck was plugged in all night and the over night low was 21*.
Opened hood, heads around the spark plugs and between the exhaust manifolds were warm to the touch. Upper radiator hose was very warm coming out of block to rise then cools as it reaches radiator. If I were to guess, I would say the coolant in the motor is anywhere between 80 and 100 degrees. I wish I had a laser temp gun to take readings at different points. Also felt the heater hoses and one is warm and the other is cooler.
So, on with the startup test. At first start, engine started right up but idled right away at warm idle. Temp guage shows bottomed out. Time: 10:36.
Temp needle starts moving 4 minutes later. Time: 10:40.
Reaches operating temperature at 10:47. I am assuming that hash mark is 180*?
This guage is a little confusing. The first half of the guage has 110* difference (100-210) then the last half of the guage has 50* of difference (210-260). Isn't that a little screwy?
Ok, first day of startup test for heater. Air temp was around 26* at 9:28 this morning at test time. (The time stamp on the camera is apparently off by 12 hrs.) Truck was plugged in all night and the over night low was 21*.
You must be registered for see images
Opened hood, heads around the spark plugs and between the exhaust manifolds were warm to the touch. Upper radiator hose was very warm coming out of block to rise then cools as it reaches radiator. If I were to guess, I would say the coolant in the motor is anywhere between 80 and 100 degrees. I wish I had a laser temp gun to take readings at different points. Also felt the heater hoses and one is warm and the other is cooler.
So, on with the startup test. At first start, engine started right up but idled right away at warm idle. Temp guage shows bottomed out. Time: 10:36.
You must be registered for see images
Temp needle starts moving 4 minutes later. Time: 10:40.
You must be registered for see images
Reaches operating temperature at 10:47. I am assuming that hash mark is 180*?
You must be registered for see images
This guage is a little confusing. The first half of the guage has 110* difference (100-210) then the last half of the guage has 50* of difference (210-260). Isn't that a little screwy?
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