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Heat Exchanger (Transmission Gear Oil to Coolant)

Discussion in '360/430' started by Keith360, Aug 29, 2019.

  1. Keith360

    Keith360 Formula Junior
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    Feb 6, 2015
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    Keith Williams
    Hello everyone, I’m looking for a old leaking Heat Exchanger (Transmission Gear Oil to Coolant), Part Number 180846. My plans are to design and evaluate the costs to fabricate replacements at a cheaper price than the factory units. I need the old unit to reverse engineer. I also don’t know what the exact failures are. I’ll look at both stainless steel and aluminum. Those that don’t drive there car hard may benefit from a less complex version with fewer internal tubes.
     
  2. killer58

    killer58 Formula 3
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    I suggest Ferrparts in Sacramento.

    Good luck, that’s a worthy project !!
     
  3. RANDY6005

    RANDY6005 Formula Junior
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    Eurospares better price and faster next day delivery too
     
  4. Keith360

    Keith360 Formula Junior
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    Ahh, i’m looking for a trashed unit for free since they are useless to anyone. I have a good one in my car but done really don’t want to take it out as an example. I also want one that is failed to do a root cause analysis of the failure.
     
  5. Keith360

    Keith360 Formula Junior
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    Thanks, I’ll call them.
     
  6. Keith360

    Keith360 Formula Junior
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    Ahh, i’m looking for a trashed unit for free since they are useless to anyone. I have a good one in my car but done really don’t want to take it out as an example. I also want one that is failed to do a root cause analysis of the failure.
     
  7. killer58

    killer58 Formula 3
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    It’s usually a corrosion failure exacerbated by infrequent fluid changes.
     
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  8. Keith360

    Keith360 Formula Junior
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    I agree, I just wanted to dissect it after recording the outside dimensions and look where improvements could be made.
     
  9. mello

    mello F1 Rookie
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    Do a search and you'll get hits of forum members that have changed it out.
     
  10. Keith360

    Keith360 Formula Junior
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    Great idea, I should have thought about that. Thanks mello
     
  11. RSR993

    RSR993 Rookie

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    You're in luck. I have one
     
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  12. hessank

    hessank Formula 3
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    A Company in Canada already did it for its customers (Daytona in Woodbridge). Used different metals than OE.
    Same price though.

    Good luck. I'm in.
     
  13. yelcab

    yelcab F1 Veteran
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    I just threw one out last week ...
     
  14. mike32

    mike32 Formula 3

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    Where does it actually fail
     
  15. yelcab

    yelcab F1 Veteran
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    Cut open one lengthwise and you will see
     
  16. mike32

    mike32 Formula 3

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    If i had a 360 and an old one i might just have a look- what is actually failing ?
     
  17. hessank

    hessank Formula 3
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  18. Keith360

    Keith360 Formula Junior
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    That’s great, i’ll PM you for details. Thank you!
     
  19. Ingenere

    Ingenere F1 Veteran
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    Every time I hear "Trans heat exchanger", I have to check in with my therapist! I did mine a year or so ago. I'll check and see if I kept the old one. It was a frighteningly annoying experience!

    Image Unavailable, Please Login
     
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  20. Keith360

    Keith360 Formula Junior
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    I can imagine, and it is in the back of my mind. All I think of is a transmission overhaul or replacement. Yikes!

    It would be great if you had the old one. The other thought was why do I need one, or one with as much heat exchanger surface area? Maybe only need a single spiral loop. I’ve built those before on an aerospace project.

    PM me so we can talk getting it to me.
     
  21. sparetireless

    sparetireless Formula 3
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    what do they cost new?
     
  22. Keith360

    Keith360 Formula Junior
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    #22 Keith360, Sep 2, 2019
    Last edited: Sep 2, 2019
    I know the cost is not outrageous, $600 to $900. I was thinking more to lower the potential failure. I was also looking into designing and kitting water in oil sensor system. Cost was pricey on that.
     
  23. sparetireless

    sparetireless Formula 3
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    What could work is another cooler that is oil to oil so that the water fail would only put oil in the water
     
  24. mike32

    mike32 Formula 3

    May 13, 2016
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    What would be the best fix is a plate heat exchanger but the cost would scare the life out of you- advantage with a plate type is that it is not possible to mix the 2 fluids
     
  25. wbt

    wbt Karting

    Nov 28, 2014
    120
    New Zealand
    I was thinking the same thing and thought about developing a version of this a few years ago, however my now strong belief is that the factory oil/water heat exchanger has a main function of heating the gearbox up quickly rather than providing cooling effect (cooling is a function, but secondary). We all know how poorly ferrari boxes shift when cold, add to this an F1 system which just crashes it through the gears regardless of "feel" I can see why the engineers wanted the gearbox to heat up quickly. Coolant heats up far quicker than engine oil.

    In the end I replaced my exchanger with the factory version in less than one days work. Some fiddly nuts and bolts but nothing too scary involved and it also gave opportunity to replace the plenum gaskets. Seeing the amount of these things which are currently failing (almost daily posts on this forum) everyone should be replacing as preventative maintenance.
     

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