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The mkiv Supra Owners Club

Can I use an NA AUTO box, with a TT engine


Prof. Monkey

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Well , to be honest thinking about it the TT gear boxes are prob that little bit different with some uprated parts and castings inside for the extra power running through them.

 

Ide not go for it unless toyota themselfs said its the same box - call a dealer and blag an answer :)

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Well , to be honest thinking about it the TT gear boxes are prob that little bit different with some uprated parts and castings inside for the extra power running through them.

 

Ide not go for it unless toyota themselfs said its the same box - call a dealer and blag an answer :)

 

Not necessarily, as the 'box is an off-the-shelf unit that will be used across various applications. They won't build a different gearbox for every Toyota in the range, and some boxes are 3rd party rebadged jobs that are the same across different manufacturers.

 

And good luck in getting definitive advice from a Toyota dealer ;)

 

-Ian

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Ok they guy at the garage is unhelpful, he will not arrange a courier for me as the box will need to placed on a pallet. He says I need to sort one out, how am I meant to know who to use in the oxford area?

 

The chap I bought it off was kind enough to give me the number of the garage that has hold of the box.

 

I just wish I had the time to trundle down there and pick it up!

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There's 3 types of auto box. Been removing these for 6 years. N/A's have the IB240. TT's have the IB280, and very late auto's have the IB320. Never took one apart to see the difference though. I do remember selling someone a IB280 to try in an N/A, and it drove like an absolute bag'o'shite.

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The NA auto box uses a mechanical "kick down" from the throttle body, whereas the TT uses an electronic "kick down" from the throttle pedal through the ECU.

 

The NA auto box is missing 2 additional VSV's and the valve body is different.

 

They are not compatible at all sorry to say.

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