2ZR Turbo Yaris

[06YarisRS]

Plumbing the Trans Cooler

Of course the transmission fittings were not pointing in optimal directions to plumb the cooler circuit. This necessitated some looping, so I'm glad I bought a bit of extra hose. I have very smooth curves in the hose, so no threat of kinking, plus this tubing can almost be folded over on itself and still flow.

Loose fitting the hoses and deciding on clamping points. There is a natural pathway just below the rad fan and lots of holes to place P-clips. I can easily do this with no contact with the car chassis parts at all.

Running cooler return line




I haven't decided whether I should put the trans fan thermostat in the line exiting the transmission or returning to the transmission. I'm leaning toward putting it in the line out of the trans as that fluid will be hotter and therefore turn the fan on sooner.

I've also calculated that the addition of the cooler and around 8' of hose will result in ~ a 0.3L increase in ATF capacity.

A couple pics from below. No clamps yet, they'll be installed last.





And, one from above