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What is this?

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Old Nov 6, 2006 | 08:42 PM
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Question What is this?

I was under my truck the other day, and I followed the tranny cooler lines from the trans. I assumed they went to the cooler mounted up front, but first they detour to this cylinder shaped tank mounted on the driver's side of the block, then they go to the cooler.

What is this thing and why is it there? I assume it is some kind of heat exchanger, but don't really know.

Anyone out there wanna help me out?
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Old Nov 6, 2006 | 08:53 PM
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Originally Posted by ib516
I was under my truck the other day, and I followed the tranny cooler lines from the trans. I assumed they went to the cooler mounted up front, but first they detour to this cylinder shaped tank mounted on the driver's side of the block, then they go to the cooler.

What is this thing and why is it there? I assume it is some kind of heat exchanger, but don't really know.
Yes.


phox
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Old Nov 6, 2006 | 09:01 PM
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That was put there to hide the crack in your block.
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Old Nov 6, 2006 | 09:27 PM
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Originally Posted by charliez
That was put there to hide the crack in your block.
LMAO that was funny
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Old Nov 6, 2006 | 10:30 PM
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Originally Posted by charliez
That was put there to hide the crack in your block.
Well he's right is a good device to hide the crack in the 53 blocks!

Geez... That's bad...

But really it is a heat exchanger for the transmission...
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Old Nov 7, 2006 | 01:54 AM
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Isn't that what the cooler out front is for? Why have 2? ...And this one looks like it's plumbed into the engine oil or engine coolant system as well, like a fluid to fluid exchanger?

BTW: No cracks here, my block is a "56" IIRC...
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Old Nov 7, 2006 | 03:31 AM
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It is a fluid to fluid heat exchanger. It warms your trans fluid to the temp of the coolant. The fluid to air cooler is up front and it is to cool your fluid.
I know...it doesn't really make sense. Lol.
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Old Nov 10, 2006 | 02:57 PM
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It seems that as many people know what it is as I do....maybe I'm not so dumb after all!
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Old Nov 10, 2006 | 03:26 PM
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It's an ATF to coolant heat exchanger. It helps you in several ways. While pulling it transfers heat from the ATF to the coolant and since the ATF woudn't have the desired temperature after the device it goes to the cooler in the front. (That would need to be much bigger without hte heat exchanger and would keep the tranny temp below the desired level under low loads and cooler ambient temps)
While the engine is still cold you can use it to heat up the engine much faster by putting the truck into drive and high idling for some minutes (Necessarily the parking brake must work and if it fails the truck must not endanger anybody.- like while parking with the bumper to a wall if you are not in the truck) -
Because with this maethod you place some load on the engine and the heat generated in the tranny is transferred to the coolant too and helps to warm the engine quicker.

HTH

AlpineRAM
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Old Nov 11, 2006 | 03:04 PM
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Thanks guys. Mystery solved.
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