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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > Technical Discussion and Customizing your H2

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  #1  
Old 06-07-2006, 07:02 AM
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Default Re: Transmission Running Hot

Kodiakz,
I'll have to check with the shop that did the install of the radiator for the size. I know it holds 3 extra gallons and I believe was 2 inches thicker then the stock unit. I know the radiator would not work with the H2's stock clutch fan in place it barley fits with the electric fans.

I would think that any quality radiator shop should be able to get one for you or have one made. It is made out of the same material as the stock unit it's just deeper/thicker. I can tell you although just my personal opinion backed with some research and personal observations, to stay away from aluminum radiators.

I'm still considering a deeper trans pan:
http://www.maghytec.com/index.asp?Pa...ATS&Category=3

I still need to get a hold of them to verify if the pan they are offering will fit the model of trans in the H2. The "Hydra-Matic 4L65-E" is not listed as a trans that their pan will fit on.

I also looking at one or two additional trans coolers to be placed in the front grill next to the inner-cooler for the s/c but the available space is only 8x8.5 so I'm not certain I can find anything to fit that space, then there is the further reduced air flow to consider by adding anything to the front grill area.

Removing the existing trans cooler and replacing it with something larger seams like the most do-able option but I'm still researching.
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  #2  
Old 06-07-2006, 07:09 AM
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Default Re: Transmission Running Hot

Oh and on my recent trip to ca (last weekend) the engine coolant never got above normal 210 even though the air outside was 100-110 in places. So I'm pretty sure the larger radiator has solved my engine cooling problems. Even while climbing the mountain passess with the a/c on the engine temp never got above normal. The trans on the other hand... well thats another story. I had to pull over twice and sit with the trans in park for 10-15 minutes till it came back down within its normal range. And yes going threw Death Valley at or around midnight it was still hot as h.e.l.l.
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Old 06-07-2006, 02:13 PM
kodiakz kodiakz is offline
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Default Re: Transmission Running Hot

"I had to pull over twice and sit with the trans in park for 10-15 minutes till it came back down within its normal range"

How many times can you do that without damaging the tranny??
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  #4  
Old 06-07-2006, 03:20 PM
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Default Re: Transmission Running Hot

Quote:
Originally Posted by kodiakz
"I had to pull over twice and sit with the trans in park for 10-15 minutes till it came back down within its normal range"

How many times can you do that without damaging the tranny??

don't know. keep an eye on the trans fluid I guess. Hopefully I'll get the issue fixed before it becomes a larger problem.
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Old 06-08-2006, 01:44 AM
kodiakz kodiakz is offline
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Default Re: Transmission Running Hot

Did you try Magnusun tech line and see if they have any suggestions or have run into this issue? May give them a jingle tomorrow and hope they have a solution.
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  #6  
Old 06-08-2006, 01:57 AM
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Default Re: Transmission Running Hot

good luck.
they will probably tell you to get a Ron Davis aluminum radiator. Don't do it.. find another option.

I'd have your trans checked by a qualified mech to make sure there is nothing actually wrong with it. If he says it's ok then get a trans cooler and a deeper trans pan.

I spoke the folks at Mag-hytec today (jerry) 818-786-8325
http://www.maghytec.com/index.asp?Pa...ATS&Category=3

The pan will fit our transmissions. just make sure you've got more then 4 1/2 inches between the exhaust cross over pipe and the flange where the pan bolts to the bottom of the trans.

If not then get a trans cooler at the very least.

Personally I'd have someone route the trans fluid lines out of the radiator and plug the holes. Leaving the stock trans cooler in line will probably be a good thing just add a secondary cooler.
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  #7  
Old 06-08-2006, 02:07 AM
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Default Re: Transmission Running Hot

http://www.thermotec.com/products/full/11600/11600.html

It was also suggested to me today to look into this. especially if a deeper trans pan is used.
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