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Higher coolant temps w/trans cooler?

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Old Feb 8, 2004 | 09:11 PM
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Default Higher coolant temps w/trans cooler?


I just installed a 24K B&M trans cooler. It seems that my coolant temp is running about 20 deg. higher. I figure this is due to the blockage and extra heat coming from the cooler. Anyone else experience this?

Mike V
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Old Feb 8, 2004 | 11:04 PM
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Default Re: Higher coolant temps w/trans cooler? (MikeV)

I found this on the TCI tech site:


Should I use an external transmission cooler in conjunction with the oil cooler supplied in the radiator?

Answer: Unless operating in an environment where the outside temperature is below 0°F, you should cap off the radiator cooler line openings and run your cooler lines directly to a new cooler mounted in front of the radiator. This allows the transmission to have its own cooling system and doesn't allow the engine water temperature to heat the fluid.




[Modified by Tlkschep, 10:14 PM 2/8/2004]
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Old Feb 9, 2004 | 08:00 PM
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Default Re: Higher coolant temps w/trans cooler? (Tlkschep)

Hi Talk.

What I mean is my coolant temp runs 20 degrees higher now that the new trans cooler is mounted in front of the radiator...

Mike V
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Old Feb 10, 2004 | 04:12 AM
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Default Re: Higher coolant temps w/trans cooler? (MikeV)

What I was thinking is that a 3500 stall is going slip more causing higher rpm's and higher trans. temp. When running around town maybe the little more rpm's on the engine is uping it a little and the increased heat from the tranny if running through the radiator might be heating the radiator coolant up a little more. I'm just guessing. But what is your coolant temp. Mine averages 200 and idling about 220. I'm thinking of about doing the same stall and gears, how do you like the feal?

All you big stall people out their, jump in here. is this normal or not.
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Old Feb 10, 2004 | 09:16 AM
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Default Re: Higher coolant temps w/trans cooler? (MikeV)

When I upgraded to a 3800 stall converter, along with a 24000 cooler, my coolent temp was about 15 degrees hotter. This is due to the fact in how the shop installed the external cooler. They took the return feed from the radiator, connected that to the input line of the cooler, and connected the return line of the cooler to the transmission. So basically the radiator was the first stage of cooling and external cooler was the second. I switch the setup around so that the external cooler was the first and the radiator was the second and my coolent temps returned to normal, but still keep the transmission cool for the higher stall converter.

Keith

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Old Feb 10, 2004 | 09:20 AM
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Default Re: Higher coolant temps w/trans cooler? (MikeV)


What I mean is my coolant temp runs 20 degrees higher now that the new trans cooler is mounted in front of the radiator...
This has been a theory and makes sense. It is not a SMALL unit. It probably covers an area about 6 inches by 12 inches or so right in front of the radiator. Makes sense it blocks air from getting through the rad.
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Old Feb 10, 2004 | 09:59 AM
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Default Re: Higher coolant temps w/trans cooler? (MikeV)

Try moving the cooler forward an inch or so to allow cold air to get in between the two. I bet that will help you out.

VR :cheers:
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Old Feb 10, 2004 | 08:13 PM
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Default Re: Higher coolant temps w/trans cooler? (vetterdstr)

Vetter,

I will give that a try.

Mike V
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Old Feb 10, 2004 | 08:41 PM
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Default Re: Higher coolant temps w/trans cooler? (MikeV)

:cool:

VR :cheers:
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Old Feb 10, 2004 | 08:47 PM
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Default Re: Higher coolant temps w/trans cooler? (Tlkschep)

I found this on the TCI tech site:


Should I use an external transmission cooler in conjunction with the oil cooler supplied in the radiator?

Answer: Unless operating in an environment where the outside temperature is below 0°F, you should cap off the radiator cooler line openings and run your cooler lines directly to a new cooler mounted in front of the radiator. This allows the transmission to have its own cooling system and doesn't allow the engine water temperature to heat the fluid.
I can tell you from first hand experience that when your tranny gets hot, that radiator water cools the fluid as well. Do Not disconnect your trans from the rad and rely on a single cooler... I am speaking from experience here...

VR :cheers:
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