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b&m (tranny) super cooler insallation

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Bross82, Apr 22, 2002.

  1. Bross82

    Bross82 1/2 ton status

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    hey, i ordered the b&m (tranny) super cooler with, i think, the 1/2 npt fittings. it doesnt come with any hoses or clamps or instructions or anything. just the cooler itself.

    i was wondering what i need to install it and how to install it.

    thanks,
    matt
     
  2. johnny reb

    johnny reb 1/2 ton status

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    Where did you order this from that it doesn't come with hoses or clamps? Mine came with everything needed to install it.

    Anyway, I mounted mine on the front of my radiator using zip ties. You'll want to run it in series with the factory cooler in the radiator. In other words, don't bypass the factory cooler. I can't remember which tranny line is the inlet and the outlet. If you do a search in the archives, this has been covered several times before. It's a relatively simple install.
     
  3. xnoahx

    xnoahx 1/2 ton status

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    The lower line in the inlet to the radiatior and the upper is the return.
     
  4. thebigdaddyof2

    thebigdaddyof2 1/2 ton status

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    If the one you ordered is the large, stacked plate design, it will be too heavy to mount to the radiator core like the smaller (cheaper) ones. Get yourself some metal stock and make some simple cross brackets to mount to the core support- then mount the cooler to this. Get the brass fittings you need to plumb it up. I used 90 deg elbows due to the tight quarters behind the grille. Be sure to use Transmission Cooling Line Hose and NOT regular hose. You can drill 2 holes through the core support for the lines. Also, take the time to use 2 valve cover (PCV) grommets as hose protectors.
    BTW, this cooler is the EXACT same unit GM used for the OEM oil cooler on my '89.
     
  5. Hossbaby50

    Hossbaby50 3/4 ton status

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  6. HarryH3

    HarryH3 1 ton status Author

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    Johnny_reb, you might want to re-think using the zip-ties to hold your cooler in place. With the vibration that an off-roader sees, those zip ties can wear holes in the cross-tubes of your radiator. /forums/images/icons/frown.gif
     
  7. Hossbaby50

    Hossbaby50 3/4 ton status

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    I can vouch for that. I had it happen to me. That is why after I had to have my radiator replaced I mounted it infront of the rad. You can see my mount in the link in my other reply. The zip ties were definitly contributing factors in me having to get a new radiator. So now with the new rad, I didn't take that chance again.
     
  8. TrcksR4ME

    TrcksR4ME 1/2 ton status

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    Here is how mine is mounted <a target="_blank" href=http://www.geocities.com/trcksr4me/transcooler.htm>click here</a>

    Also, I am unsure of how the tranny lines go to the radiator. Does the hot fluid go in the top and cool out the bottom? When i installed my cooler I just replaced an old one that was on there. But looking at the lines now I am unsure if it is hooked up right. Not covered in the Haynes manual either.
     
  9. Sandman

    Sandman 3/4 ton status Author

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    I know that there are different opinions on this, but I say bypass the stock cooler in the radiator. I also have a stacked plate cooler that was run in series with the radiator cooler with a B&amp;M temp guage on the return line into the transmission. With heavy four wheeling and my 2400 stall converter the temp would stay around 230 to 240 degrees and my engine would sometimes run hot. I took the radiator cooler out of the loop and now the tranny runs at around 160 to 200 during hard wheeling and the engine never heats past the thermostate temp rating. I figured either the tranny fluid was heating up the radiator or the radiator fluid was keeping the tranny fluid warmer or something. But yeah use some type of brackets to mount it.
     
  10. Chris_T

    Chris_T 1/2 ton status

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    I'm against bypassing the stock cooler, especially if you live in a cold climate. But don't run the lines from the tranny cooler back through the radiator as it may re-heat the fluid. My lines run from the tranny, through the rad, into the tranny cooler and back to the slush box.
     
  11. Sandman

    Sandman 3/4 ton status Author

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    I guess thats a good point. Looks like how you would run it depends on where you live. If you live in the south you could do a bypass and if you ive in the north you would not. So mabey the correct answer would be to not bypass it and see how it goes and then do a bypass depending on conditions.
     
  12. Bross82

    Bross82 1/2 ton status

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    thanks everyone for all the info... i think the pictures definately helped too. i live in mass, so it can get kinda cold during the winter so i'll prob run it in series. i forget who asked, but i got it through summit.... and it even says on the box that this model and one other doesnt come with any hoses or anything because of its custom nature.

    oh yeah, this is off topic, someone mentioned not finding something in the haynes manual. it covers timing chains if you look near info on the camshaft. i found that out a few months ago. my point is i think its a poorly indexed manual from what ive noticed.

    thanks a lot,
    matt
     
  13. Bross82

    Bross82 1/2 ton status

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    hey, i was wondering what size the tranny cooler line is supposed to be?

    thanks,
    matt
     

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