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post #1 of 5 (permalink) Old 09-14-2008, 09:27 AM Thread Starter
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difference between radiators?

hey all,
I was just wondering if there is any difference between a radiator from an auto to a manual IDI? I know that most of the time on gas vehicle ther is a difference due to the cooling capacity needing to be higher for the auto's etc... but i don't see any difference in the IDI radiators at all. I need to know because I have an auto that had catastrophic trans failure (lots fo metal) and I know that there is no sure way to flush it all out of the radiator cooler. So I was thinking about taking the radiator out of my manual parts truck and using it (no trans particles in it). I can see the capped hookup for the inlet and outlet lines for the trans so I can't see why it wouldn't work. Just want to know before I go the the trouble of swapping them. Thanks
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post #2 of 5 (permalink) Old 09-14-2008, 09:54 AM
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I just bought a new radiator for my manual idi truck and it had the same capped auto trans fittings. I believe it would work for an auto trans just as long the cooling coil is installed in the radiator.
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post #3 of 5 (permalink) Old 09-14-2008, 11:52 PM
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Due to catastrophic failure the aux (air) cooler should be replaced. Usually a Magnafine filter is installed in the line to the Trans from the new aux cooler...... (required for warranty if a rebuilt Ford trans). I believe the lower rad can be cleaned sufficiently if you remove the line nipples to allow more cleaning fluid and air....... check with a rad shop or trans shop.

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post #4 of 5 (permalink) Old 09-15-2008, 08:47 AM Thread Starter
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I don't have an aux cooler on my truck, just the radiator and condensor up front. I am not sure why though, did all 7.3 idi with e4od's come with an aux cooler? If so, I wonder why I don't have one?
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post #5 of 5 (permalink) Old 09-15-2008, 02:51 PM
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No.. The stock cooling system for the idi E4OD was only the lower radiater tank. If you look at the lower tank you will see a small hose that "Tees" off the heater return line to the water pump. That needs to be done away with. That fitting at the bottom tank is only about 1/8 port drilled in it. All it does is warm up the lower tank so the trans warms up faster. Another Ford better idea blunder in my oppinion.

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