Trans Cooler By Pass Radiator
Thread Starter
Pro
Joined: Feb 2007
Posts: 548
Likes: 1
From: Victoria VA
Trans Cooler By Pass Radiator
Has anyone used a trans cooler and by passed the radiator? I was told the trans would run cooler it I did not run the trans fluid through the radiator and only through a external cooler. What is your thoughts on this any proof one way or the other?
Thanks
Thanks
Burning Brakes
Joined: Jan 2009
Posts: 1,224
Likes: 1
From: Clarksville Indiana
My un-informed thinking would be that the external cooler is designed to provide additional cooling, not designed to be the only cooling. Maybe if it was a good sized one, but then you are blocking your radiator more.
Drifting
Joined: Dec 2007
Posts: 1,634
Likes: 1
From: aurora
i Cant remember the size the cooler but it just fits nicely in front of the rad, i pulled the lines out of the rad and plugged the rad holes then cut the lines and attached high pressure hydraulic hose to the fittings on the cooler with gear clamps works great. 350 and stock auto trans
Todd
Todd
Last edited by cargo247; Feb 18, 2009 at 08:28 PM.
Drifting
Joined: Dec 2007
Posts: 1,634
Likes: 1
From: aurora
well how well do you cool when your running though a hot rad?
Thread Starter
Pro
Joined: Feb 2007
Posts: 548
Likes: 1
From: Victoria VA
I was told that if a radiator runs at 195 degrees that the trans fluid never get below that and if you by pas the radiator and just use a cooler the trans runs cooler. the size o the cooler in the radiator is smaller than an external cool would be anyhow.
Drifting
Joined: Dec 2007
Posts: 1,634
Likes: 1
From: aurora
the cooler in the rad is flat like a pancake and about 10" long and 2" wide not much for cooling.Whats is the enemy of oil? .....heat....brakes it down.
keep it cool man
Todd
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Thread Starter
Pro
Joined: Feb 2007
Posts: 548
Likes: 1
From: Victoria VA
Thanks for that info so I would do better with an external cooler I would think. My 77 runs from 180 to 200 degrees. And if I put a higher stall it would create more heat. I just wonder if the engine temp would fall with out the trans running through the radiator.
Burning Brakes
Joined: Aug 2007
Posts: 1,173
Likes: 1
From: Liberty Missouri
Running a transmission too cold is just as bad as running it too hot. The cooler lines run through the radiator to help warm the fluid when cold as well as cool it when hot. Typically your tranny will run about 20-30 degrees cooler than you engine temps. It’s good to run the line through a cooler first, but then it’s best to go through the radiator before it returns back to the tranny. This will keep the transmission in it’s optimal operating range.
Drifting
Joined: Dec 2007
Posts: 1,634
Likes: 1
From: aurora
Burning Brakes
Joined: Aug 2007
Posts: 1,173
Likes: 1
From: Liberty Missouri
Too cool will cause clutches to slip more, causing premature wear. Check out BTO (Bow tie Overdrives) website, there is lots of good information there on this subject.
PS. I’m not saying a cooler isn’t a good idea (I run one) Just plum it correctly for the best performance.
PS. I’m not saying a cooler isn’t a good idea (I run one) Just plum it correctly for the best performance.
Thread Starter
Pro
Joined: Feb 2007
Posts: 548
Likes: 1
From: Victoria VA
Thanks I'm going to get a trans temp gauge to keep a good look at it and know where I should be. I see 175 to 225 is the best temp for them. Thanks for all you info that is what I'm a member here for.
Burning Brakes
Joined: Aug 2007
Posts: 1,173
Likes: 1
From: Liberty Missouri
Edit>>> i should note that BTO wants their trannys to run in the 150 range.I know its cooler than what this website specified, but I thought it was worth mentioning.
Last edited by Theiskell; Feb 18, 2009 at 11:00 PM.