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Transmission cooler line fitting question

  #1  
Old 11-09-2016, 11:54 AM
brennanforgeron
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Transmission cooler line fitting question

Hey all, have a 6.0 trans cooler I mounted on my truck but haven't plumbed it into system yet. Planning on installing new bigger lines from transmission forward. Have a question regarding the fittings in the radiator for the transmission cooler line. Are those fittings removable? If so are they just pipe thread into the radiator? Hopefully somebody has some info on these as they are the last thing keeping me from getting this project done.
Thanks, Brennan
 
  #2  
Old 11-10-2016, 04:41 PM
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I'm getting ready to do the very same thing to a project truck I'm building and I'd like to run larger lines from tranny to radiator and cooler to but I need to know what fittings I need maybe someone will have more ideas
 
  #3  
Old 11-11-2016, 12:12 AM
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Mark the trans guru says you are wasting time and energy every time this has come up that I have seen.. No the rad fittings are not changeable.
 
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Old 11-11-2016, 11:17 AM
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There's no real point in increasing the size of the fittings; the flow rate and line size out of the transmission is set, and you would reduce pressure drops only slightly, not enough to warrant spending extra dough in larger line sizes.
 
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Old 11-11-2016, 06:19 PM
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I asked Mark earler this year if it was worth going to larger trans cooler lines and he said yes, they will flow more fluid, especially if you are going to a larger trans cooler. I think I'm quoting him accurately.
 
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Old 11-11-2016, 07:49 PM
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The lines have to be replaced at some point regardless because they are getting rusty. The 6.0 trans cooler has 1/2 non removable barb fittings on it, so instead of using a number of step up connections from the factory 5/16 lines to 1/2 line I was just going to the SD trans cooler line upgrade (3/8) for better flow and save using an ungodly amount of step up fittings. The fittings in the rad have a hex head on them so I'm curious if they thread out.
 
  #7  
Old 11-11-2016, 10:33 PM
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An advantage, and not all agree it is an advantage, of using the SD hard lines is that you typically install a bypass too. This is at the trans, spans between the in and out ports, and the SD lines thread through it. Should the cooler lines become blocked, the bypass routes the trans fluid back into itself, saving it from starving from lubricating fluid. The downfall is that the cooling system is completely bypassed.
 
  #8  
Old 11-13-2016, 01:35 PM
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I would use spacers that take the place of the bypass tube, they are sold by a few different places online. I priced the bypass tube from ford and it is more than I want to spend.
 
  #9  
Old 11-14-2016, 09:30 AM
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I asked John Woods about this and he said its not worth it.
 
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Old 11-14-2016, 10:40 AM
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Originally Posted by oldbird1965 View Post
I asked John Woods about this and he said its not worth it.
The bypass isn't worth it? i already bought one...is it a detriment to use it?
 
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Old 11-14-2016, 09:16 PM
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Oh no, I was talking about the bigger lines. I really don't know about the bypass but it sure sounds like a good idea!
 
  #12  
Old 11-14-2016, 10:44 PM
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Well, I got the bigger lines and the bypass...just need to find time to plumb them in!
 
  #13  
Old 11-14-2016, 11:02 PM
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What's your plan for when you get to the rad? Nobody seems to know if those fittings in rad are removable not
 
  #14  
Old 11-14-2016, 11:17 PM
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Originally Posted by brennanforgeron View Post
What's your plan for when you get to the rad? Nobody seems to know if those fittings in rad are removable not
The ford 6.0 trans cooler was given to me but and is about 12" wide and 10" tall...not like some of the much bigger "6.0" trans coolers I've seen.

As far as I know, the OBS plumbing is 5/16" and the SD plumbing is 3/8", and not 1/2".

The 6.0 trans cooler I have has 3/8" fittings already attached. I will look tomorrow to see if they look to see if they are removable or not.

My reason for the SD lines is the bypass...better flow and cooling are a bonus if they result in any. I now have a way to monitor the trans temp so if the system goes into 'bypass mode' I will know it.
 
  #15  
Old 11-14-2016, 11:21 PM
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I really don't know if they are removable or not but once I tried to take one off and got a anti-freeze bath. Then I had to buy a new radiator.
 

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