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Thread: Using air con condenser as auto trans cooler

  1. #16
    Junior Member Backyard Mechanic byteme's Avatar
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    Default Re: Using air con condenser as auto trans cooler

    thats why you have an air compressor
    Hamgatan says:
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  2. #17
    The Bling Garage Mechanic Automotive Encyclopaedia Wildsupra's Avatar
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    Default Re: Using air con condenser as auto trans cooler

    yeah tried that, shit went everywhere hehe
    might fill it with degreaser then hose it through then air line it out.

  3. #18
    Junior Member Too Much Toyota
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    Default Re: Using air con condenser as auto trans cooler

    just flush with petrol or a simple oil-based solvent (e.g. kero, white spirits, etc.) then blow clean with the compressor - degreaser means you then have to make sure it['s dry before you put trans fluid thru it.
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  4. #19
    Junior Member Domestic Engineer NeoNasty's Avatar
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    Default Re: Using air con condenser as auto trans cooler

    How would you test the flow rate, and find if its enough for whats needed?

    Is there a backyeard method? I guess, you could start the car up, and with the trans in drive, for a set amount of time see how much fluid comes out of the line. That would tell you the rate of flow in the trans.

    What about the Cooler?
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  5. #20
    Junior Member Grease Monkey gazza53's Avatar
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    Default Re: Using air con condenser as auto trans cooler

    A cooler is a cooler, an A/C condenser will probably be too large and cool the tranny fluid too much, but work out which way the fluid travels, put it through the cooler first then back through the main radiator which will rewarm it to an operational temperature.

  6. #21
    The Bling Garage Mechanic Automotive Encyclopaedia Wildsupra's Avatar
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    Default Re: Using air con condenser as auto trans cooler

    its going into a manual setup car, eg manual ecu, manual radiator etc etc, there is no standard radiator to run in back through
    Took the air con cooler out, it was only 1/4 inlet, so i drilled that out too 3/8 and the outlet is already big enough.
    What is the issue with the fluid being TOO COOL?? is it an issue?
    i may just opt for a big auto trans cooler instead if this one is going to be too big.
    I filled it with degreaser, then ran the hose through it then ran the air line through it till no more moisture coame out then let it bake in the sun, should be dry now

    Matty

  7. #22
    Toymods Pimp Chief Engine Builder Norbie's Avatar
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    Default Re: Using air con condenser as auto trans cooler

    ATF is designed to work at a specific temperature range; too low and it won't perform well. Your transmission needs to get up to temp quickly for the same reason the engine does.

  8. #23
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    Default Re: Using air con condenser as auto trans cooler

    It will be fine to use it like this. One of my friend uses it in that way and he didn’t face any problem either. Actually, A condenser unit used in central air conditioning systems typically has a heat exchanger section to cool down and condense incoming refrigerant vapor into liquid, a compressor to raise the pressure of the refrigerant and move it along, and a fan for blowing outside air through the heat exchanger section to cool the refrigerant inside. these condenser units are located on the outside of the building they are trying to cool, with tubing between the unit and building, one for vapor refrigerant entering and another for liquid refrigerant leaving the unit. Pressure restriction can be a problem on this matter but I don’t it would be a big issue.

  9. #24
    Forum Member 1st year Apprentice
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    Default Re: Using air con condenser as auto trans cooler

    I agree with learn. I am a qualified auto A/C tech and the job of the condenser is to drop the temp of the high pressure gas by about 5 deg Celsius thus forming a high pressure high temperature liquid before it goes to the Tx valve. So the answer to can you use the condenser as a tranny cooler, yes you could, would I? no, I would use a specialized unit to achieve to desired result.

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