This may be a bumb question, but the instructions in my kit were kind of vague. This is the fitting that came in the cooler kit, and I don't know if I should use it or just cut the cooler lines that are in the car now. If I should use the fitting, wouldn't I still have to cut the line?

 

Come on... at least flame me for asking a stoopid question. I just don't know if the pressure is too high to cut the cooler lines and use hose clamps to hold the hose on there, or if I should use the cheesy fitting.

 

just use that fitting so you don't have to cut your tranny lines. Most of the kits come with the 1-piece type of adaptor but that 2-piece might be cheaper to mfg.

 

If it eases the installation, however, hose will be sufficient. The transmission line is low pressure. Make sure you use an oil compatible hose like fuel line.

 

Thanks, I'll probably just cut my present tranny lines. I think that'll make it easier.

 

I was told the transmission lines are high pressure lines. They bundle high pressure hose in the kits. When you hook up a gauge to check tranny pressure to make sure your cable is correct they tell you to install a 0-300psi gauge.

Just my two cents,
Steve

 

I do not believe that is true. Many aftermarket cooler companies sell their units with low pressure hose. Think about this, most trannys are cooled with a run through the radiator tank. How many radiators you ever seen that could handle 300 psi?

 

The coils in the radiator may be able to hold that kind of pressure, but I think it is a low pressure line. I'm not sure what the line pressure is on a th350. That's what I'm using. I haven't put it in yet, and I'm not even sure if the cooler lines from the 700 will hook up. The tranny is out of a '72 van, and the fluid has a slight burnt smell. I just want to crutch it along as long as I can.

 

Maybe, but you don't exactly connect that gauge to the cooler lines now, do you?

 

Well, yeah, I'm just saying there is high pressure there, that's all. Both of the B&M stacked plate style tranny coolers I received had high pressure reinforced hose with them and recommended using high pressure hose. Like I said, it's just my two cents. The high pressure stuff doesn't cost that much more than the regular - cheap insurance if you ask me.

Steve

 

the high pres. hose is there becouse it is strong..protect it from
breaking BUT come on the fitting is in there for a reasen
y do it the fast way? when u can do it right way!

 

Ah, if the factory made it that way, what possible reason could there be from deviating from their design?

Just as a clarification, all the fuel line I've ever seen has a single braided internal fiber reinforcement. It's plenty strong enough to hold tranny cooler line pressure. BTW, I install a cooler in most of the vehicles I own, always with fuel hose. Three such vehicles in driveway now.

 

As usual you all overlooked the "picture", the flairs on are there to prevent the hose from coming off from inadequate tightening. Use two hose clamps. Inadequate tightening does not mean to "overtighten them", it means follow instructions.

 

Just to clarify something, no, there is not high pressure in the cooler (or there shouldn't be!). The tranny can have upwards of 300 PSI but the cooler circuit with no restrictions will generally be quite low. That being said you still need top quality hoses to withstand the affects of the oil as plane ol' rubber will swell and pop, not to mention the vibrations, etc. that it must endure. I like to take eny excess hose, cut it into a spiral and wrap it around and close spots that might possibly rub on something, just to be safe.

 

Thanks for the help. I'll use the fitting. I hadn't thought about the hose pulling off.