Oil Cooler

[hal 1]

Hi, I've just had my auto gearbox reconditioned and bought a new larger cooler for the transmission oil, the chaps who did the work and supplied the cooler kit said that ordinary rubber hose as supplied would do the job without any problems, however when i went to a hose specialist for some more as there wasn't enough he said that for ATF i'd need a different type, the pipe he supplies isn't expensive so i dont feel he was trying to rip me off but i'd like some other opinions please, any help ?


Roy

[GreenV8S]

Dunno what sort of hose the cooler chaps recommended, but I think you'll need hose designed to carry oil under pressure, this will be lined and reinforced. I don't understand why ATF would need anything more than any other oil, but if anyone knew it'd be the hose specialist so I'd take his advice if I were you.

[eliot]

You need to play safe with the hose, the hot atf can knacker lesser hoses. you need "100-r6" spec hose. I did have my old ones braided, but remember the braiding only gives abrasion resistance - not strength.

http://www.thinkauto.com/acatalog/Price_List_100R6...

I dont think the pressure is mega high, because usally its the atf coming from the torque convertor that gets cooled then returned to the sump.

I have now replaced the whole lot with the blue push-on stuff which is easy to use, cheap and looks nice:
http://www.thinkauto.com/pushon1.htm
You have to use the proper fittings with it though.

Edited by eliot on Monday 2nd July 22:11

[GreenV8S]

eliot said:

I have now replaced the whole lot with the blue push-on stuff which is easy to use, cheap and looks nice:
http://www.thinkauto.com/pushon1.htm

Did you find it easy to use? I bought a set of push-fit oil hoses and connectors from Think Automotive, no problem with the price or quality but assembling the fittings by hand was virtually impossible. In the end I went back to plain ordinary hose and barbed fittings which were cheaper and *far* easier to assemble.

[eliot]

GreenV8S said:

Did you find it easy to use? I bought a set of push-fit oil hoses and connectors from Think Automotive, no problem with the price or quality but assembling the fittings by hand was virtually impossible. In the end I went back to plain ordinary hose and barbed fittings which were cheaper and *far* easier to assemble.

Clamp the fitting in the vice and lube the fittings a little. I usally spit on the smaller ones and a drop of wd40 on the big -12 ones. Always managed to get them on, but yes they take a little effort. Perhaps put the hose in boiling water for a minute or so beforehand would work well.

[GreenV8S]

eliot said:

Clamp the fitting in the vice and lube the fittings a little. I usally spit on the smaller ones and a drop of wd40 on the big -12 ones. Always managed to get them on, but yes they take a little effort. Perhaps put the hose in boiling water for a minute or so beforehand would work well.

Did all that, I ended up clamping the hose in a block and pressing it onto the fittings, even with the fittings lubricated and the hose too hot to touch it took a lot of force to assemble and it was a juggling act to apply enough force to get the hose over the fitting without buckling the hose. Just didn't seem right to me, an ordinary hose goes on with very little force and just needs a circlip to retain it, these 'easy to use' hoses/fittings were virtually impossible by comparison.