Zf Heat Issues

[NATHOON]

I have been at power cruise today chewing up a few cars but the tranny goes into limp mode from heat. Has anyone done a trans cooler for the 6 speed. I had a look on the hoist and there is 2 plastic lines and a heat sink attached to the block any sugestions?

[mbjunior99]

How much power you running?

[NATHOON]

343 rwkw

[ms700]

They run a factory cooler, I think its water to oil, maybe look at getting a bigger one, or a air to oil?

[NATHOON]

yeah its like a little box its nolted to the block though. The lines going to it are plastic its weird. I was hopping someone else has done a swap already. Its fine for drag racing but didnt like 3 hot laps at eastern creek

[Guest]

yeah its like a little box its nolted to the block though.  The lines going to it are plastic its weird.  I was hopping someone else has done a swap already.  Its fine for drag racing but didnt like 3 hot laps at eastern creek

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Iv'e been told that if you add a trans cooler you'll change the line pressure and the box goes into limp home mode.

[Trough Lolly]

maybe fitting a larger one will reverse the problem and sort it out lol

surely theres gotta be sum1 whos tinkered with these boxes by now.. even a transcooler could make these so much better becuase I cant see them lasting behind some of these near 400kw phoons around now!

[Guest]

maybe fitting a larger one will reverse the problem and sort it out lol

surely theres gotta be sum1 whos tinkered with these boxes by now.. even a transcooler could make these so much better becuase I cant see them lasting behind some of these near 400kw phoons around now!

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The software is the problem, it can dectect a pressure drop and shuts itself down.

[Venom XR6]

The 40th anniversary GT has an upgraded auto trans cooler, it will probably also come with the R spec handling package for track work. This is one option to look at when it becomes available.

[Robit28]

maybe fitting a larger one will reverse the problem and sort it out lol

surely theres gotta be sum1 whos tinkered with these boxes by now.. even a transcooler could make these so much better becuase I cant see them lasting behind some of these near 400kw phoons around now!

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The software is the problem, it can dectect a pressure drop and shuts itself down.

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Why would pressure drop?

If the unit is topped up with trans fluid to fill the extra volume and unless there are major reatrictions I don't see why pressure would drop even if it's going through a longer distance.

Rob.