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Automatic transmission cooling lines


Thunderhead

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I just ordered the B&M cooler. Does anyone know what fittings I need to attach new rubber hosing to the transmission, since I am going to remove the metal tubing with rubber hoses. It would appear that I need two fittings that screw in or attach to the tranny.
Personally, I would take them to Napa or somewhere they can crimp them on, new ones to new hoses.
The B&M kit comes with different fittings that fit different sizes
 

MountaineerTom

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Jerry Bransford

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Personally, I would take them to Napa or somewhere they can crimp them on, new ones to new hoses.
The B&M kit comes with different fittings that fit different sizes
Why bother doing that? As said above, the pressure isn't great enough to worry about a special clamp or crimp. Simple constant tension clamps or hose clamps are more than enough.

This shows a couple of my Derale cooler connections. See a clamp? They're all just push-on connections with the fanciest clamp being the OEM factory constant tension clamp at the radiator ports. That little plastic cap at the end of the hoses where the red fittings press in just covers the raw edge of the hose to make it look nicer.

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mrblaine

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Why bother doing that? As said above, the pressure isn't great enough to worry about a special clamp or crimp. Simple constant tension clamps or hose clamps are more than enough.

This shows a couple of my Derale cooler connections. See a clamp? They're all just push-on connections with the fanciest clamp being the OEM factory constant tension clamp at the radiator ports. That little plastic cap at the end of the hoses where the red fittings press in just covers the raw edge of the hose to make it look nicer.

View attachment 94005View attachment 94006View attachment 94007
Snort. 😇 To be fair Jerry, those particular type pushloc fittings are rated at about 400 psi without a clamp. I agree with you fully on the use of crimp-on fittings and no one I know with a brain will drop the exhaust to pull the steel lines to be able to carry them down to the crimping store. It is however a bit misleading to show those as an example of low pressure when they work so well.
 
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mrblaine

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If your talking about these metal lines I just crimped the rubber hose to the line
View attachment 93996
I use a lot of the Oetiker clamps. I don't like Oetiker clamp prices at race car suppliers. If you dig around, you can find clamps for Pex and similar plumbing systems that are the same clamps at a fraction of the race car prices.
 
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BobK

BobK

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Why bother doing that? As said above, the pressure isn't great enough to worry about a special clamp or crimp. Simple constant tension clamps or hose clamps are more than enough.

This shows a couple of my Derale cooler connections. See a clamp? They're all just push-on connections with the fanciest clamp being the OEM factory constant tension clamp at the radiator ports. That little plastic cap at the end of the hoses where the red fittings press in just covers the raw edge of the hose to make it look nicer.

View attachment 94005View attachment 94006View attachment 94007
I am fully convinced. Once my rubber hose (I ordered 25 feet of it) arrives along with the B&M cooler I'll add yet another project to my list. Thanks for the advice on the clamps versus crimping, I'm not a huge fan of crimping anyway, so this just put me over the edge.

The only fittings I'd like to replace are the actually fittings that would be needed with the hose to attach to the transmission. I guess I'll wait to see what is included in the B&M kit and then buy whatever is missing.

The plan is to drop the front cross member/skip plate that covers the transmission oil pan, de-gunk it, drain all the tranny fluid, replace the trans filter and gasket, then tear out the old lines and route the new hoses nice and neat. Sounds like a well spent Saturday afternoon!!

Bob
 
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woody367

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I know this post is 6 months old but I am going to do the same line replacement.I read somewhere that one of the lines have a anti back flow check vale? Where would it be, where can I find just a valve to put in the new rubber trans line seeing I am doing away with the old rusted leaking line. I have a 30rh trans. Thanks
 

mrblaine

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I know this post is 6 months old but I am going to do the same line replacement.I read somewhere that one of the lines have a anti back flow check vale? Where would it be, where can I find just a valve to put in the new rubber trans line seeing I am doing away with the old rusted leaking line. I have a 30rh trans. Thanks
The check valve is right at the end of one of the hard lines where it transitions to the rubber lines going to the radiator.
 

astjp2

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I robbed a cooler off of a ford escape in a junk yard, bolted it to the inside of the grill with 3 bolts and I didnt run into the radiator cooler, my trans temps never get above 240 and usually run 150-190 depending on the outside temps. I brazed in a temp bulb into the pan and I tested it with boiling water so i know its fairly accurate. Tim
 

woody367

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My lines have been cut back over time so I am guessing the valve is missing. Do they make one with barbed fittings so I can out it in the new rubber hose I am replacing it with and which line does it go on. Also where can I buy it? Thanks
PS- is it necessary to have the valve or not?
 
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khakitj

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NorCal
My lines have been cut back over time so I am guessing the valve is missing. Do they make one with barbed fittings so I can out it in the new rubber hose I am replacing it with and which line does it go on. Also where can I buy it? Thanks
PS- is it necessary to have the valve or not?
I thought I read somewhere on here that the 42RLE doesn't have a valve, it's different than the earlier transmissions that needed a valve on the line?
 

ModerndayMuffler

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Feb 19, 2020
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Wadsworth, Ohio
I just ordered some yesterday, I haven’t got them yet so I cant tell you about the quality but here’s the link https://moderndaymuffler.com/collec...smission-lines-oil-cooler-lines-4-0-i6-engine
Thanks for sharing our link noticed it was broken so hear is the new one. We also carry Tj Brake and fuel lines.
 
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LONGJP2

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Aug 11, 2019
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Illinois
Thanks for sharing our link noticed it was broken so hear is the new one. We also carry Tj Brake and fuel lines.
Still no '06?

Having a hard time finding the oem part number for the transmission cooling lines.
Does anyone have a link for the radiator fitting that's converts it to a barbed fitting?