Trans cooler lines

butch27 · September 24, 2007, 10:26:35 PM

I,m running cooler lines on a C-4 trans. Does the rear line on the trans go into the right or left side of the radiator? Also I have a remote cooler. Do I run to the radiator first then back to the cooler?

Pep · September 24, 2007, 10:38:01 PM

Doesn't make much difference...any order,any direction as far as I can see.

Crosley.In.AZ · September 24, 2007, 10:42:34 PM

there should be no check valves in the system.... so either way is fine as mentioned.

the cooler & radiator thing.. that is subject to a great debate.

aux cooler then radiator is the way i hook them up

donsrods · September 25, 2007, 01:58:39 AM

I too think the cooler first and radiator second makes more sense. That way the fluid is somewhat cooler by the time it hits the radiator and should tend to heat the coolant up less, I would think.

Don

butch27 · September 25, 2007, 09:35:37 AM

Then it seems there must be a direction of flow. If I run one line from the trans to the cooler then the other MUST go to the radiator and back to the other fitting on the trans. How does the fluid know which way to go? Does this make any sense or am I really confused?

Crosley.In.AZ · September 25, 2007, 03:10:48 PM

Quote from: "butch27"Then it seems there must be a direction of flow. If I run one line from the trans to the cooler then the other MUST go to the radiator and back to the other fitting on the trans. How does the fluid know which way to go? Does this make any sense or am I really confused?

the cooler system of the trans is pressurized....

front line on side of the case is the "OUT" from the converter... the rear fitting on the case is the "IN" or "return" to lube & cool the trans

butch27 · September 25, 2007, 04:15:08 PM

Thanks: That satisfied my morbid curiosity . I knew there had to be some reasoning and answer for this.

Crosley.In.AZ · September 25, 2007, 11:48:06 PM

many folks seem to think the fluid just flows around the trans some how.... not thinking about the pump in the trans.

I receive a few ( 4 - 6 ) emails a year from folks worried that they did not fill the converter with fluid before the trans install.... they don't know one of the first places the fluid is pumped to is the converter.

It's all good.

Pressure can run near 50 psi in the cooling system of a street trans. Do not use cheap rubber hose. You can have a leak and fire.

Beef'd up or racing trans the cooler pressure can see 80 - 100 psi

midnight sun · September 27, 2007, 06:44:58 PM

I know this has been asked before (probably by me). When and why is it even necessary to run a tranny cooler? Ive run my Model A 327/350TH for about 5 years now w/o a cooler and at least to my knowledge never had a problem.

purplepickup · September 27, 2007, 10:01:41 PM

Quote from: "midnight sun"When and why is it even necessary to run a tranny cooler? Ive run my Model A 327/350TH for about 5 years now w/o a cooler and at least to my knowledge never had a problem.

I put a cooler on after I put a tranny temp gauge on. I wasn't comfortable with the temps I was seeing...as high as 215 deg in the pan. My torque converter is a 2100 stall which isn't real radical but it's loose enough to create heat. Tranny temp now is rarely over 170 and usually lower. BTW, I put my cooler after the radiator.

Crosley.In.AZ · September 27, 2007, 10:10:07 PM

Quote from: "midnight sun"I know this has been asked before (probably by me). When and why is it even necessary to run a tranny cooler? Ive run my Model A 327/350TH for about 5 years now w/o a cooler and at least to my knowledge never had a problem.

So... you have the cooler lines loop around back into the trans? No cooler of any type?

interesting.

butch27 · September 27, 2007, 10:13:15 PM

What's the opinion here about weather to run from the trans to the radiator or the cooler first?

Crosley.In.AZ · September 27, 2007, 11:38:23 PM

Quoteaux cooler then radiator is the way i hook them up

done it for years in AZ.... often I only use a large aux cooler , nothing through the radiator

enjenjo · September 28, 2007, 09:47:29 AM

There were a few cars that came without coolers, but they were all small low power cars.

The oil manufacturers recommend an ideal fluid temperature of 175 degrees. This is warm enough to boil off condensation, but not warm enough to oxydize the oil. For every 20 degrees abouve ideal temperature the life of the oil is cut in half, above 240 degrees, the life of the oil becomes nil.

midnight sun · September 28, 2007, 11:05:35 AM

Quote from: "Crosley"
Quote from: "midnight sun"I know this has been asked before (probably by me). When and why is it even necessary to run a tranny cooler? Ive run my Model A 327/350TH for about 5 years now w/o a cooler and at least to my knowledge never had a problem.

So... you have the cooler lines loop around back into the trans? No cooler of any type?

interesting.

The lines run directly from the bottom of the radiator directly to the tranny