727 cooler plumbing... - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 03-05-2001, 10:13 PM Thread Starter
 
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727 cooler plumbing...

What do ya'll think? Do I NEED to run steel lines from the tranny to the cooler, or will rubber work just fine if I keep it away from the heat? I've heard both opinions. What's the feeling here?

'86 CJ-7, 360, 727, OEM Dana 44 rear w/Truetrac, Dana 30 w/Powertrax No-Slip, 4" Superlift, 4:11s, Warn HS9500i
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post #2 of (permalink) Old 03-05-2001, 10:18 PM
 
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Re: 727 cooler plumbing...

ive used the factory steel lines, and Ive replaced the fitting in the tranny with brass plumning fittings and ran rubber hoses the entire length and not had problems, I did cable tie it out of hte way and away from hot parts.

there may be a risk of the atf eating the rubber if you dont use the correct hose though.

make sure its NOT atf soluble.



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post #3 of (permalink) Old 03-06-2001, 06:34 AM
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Re: 727 cooler plumbing...

IMHO, use steel lines. I replaced mine with brake tubing... and it works fine. Ozarkjeep makes a good point as AT fluid is very destructive to non-metal lines.... be SURE you get the right type if you use non-netal line.


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post #4 of (permalink) Old 03-07-2001, 12:04 AM
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Re: 727 cooler plumbing...

Glad to hear someone else ask a question about this! I want to move my lines away from the exhaust on my YJ 4.0. I doesn't make sense to me to cool the fluid and then run it by the exhaust to see if it can pick some heat back up!
My plan is to go flex lines to the frame from the box. Steel lines to the front and flex lines again to the radiator and the large stacked plate cooler I just put in.

Ozark and LEVE - what are the threads on the side of the box? Have they changed over the years? Mine has the quick disconnect units if that makes a difference.

sln

post #5 of (permalink) Old 03-07-2001, 07:15 AM
 
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Re: 727 cooler plumbing...

i doubt they changed, although I cant remember the exact size, but mine were standard pipe thread.



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