I have a U.K. 300zxtt. The autobox is on the way out. Must it be replaced with a UK autobox or will an import box do?

 

Is there any difference?

I have a U.K. 300zxtt. The autobox is on the way out. Must it be replaced with a UK autobox or will an import box do?

 

Is there any difference?

 

No difference, the difference comes from N/A to TT due to the bell housing

Actually, there is a difference in the control systems, the jap version has more options, but I believe the physical gearbox is interchangeable.

 

The 4 speed automatic transmission is a lockup type. When in drive mode, gears change 1-2-

3 then 3 lockup, giving the effect of 4 gears. When overdrive (4th) is switched in, the change

goes 1-2-3-4 then 4 lockup, giving the effect of 5 forward gears. There is a communications link

between the automatic transmission control computer and the engine management computer,

and this amongst other things, allows the engine computer to retard ignition, thus momentarily

reducing engine power, during auto gear changes. Auto gear changes therefore are very smooth.

The automatic transmission fitted to the turbo model is stronger than the one installed in the non

turbo. Although the gear ratios are almost identical, there are many minor differences between

the two transmissions.

 

The Japanese automatic transmission has many more features than the export models.

A "power", "normal" and "hold" switch is fitted to modify transmission shift points. The effect

of the "power" setting is to delay upshifting, but does not alter the maximum RPM that change

occurs. In order to change at the red line or rev limiter speed, one must operate the shifter

manually. The hold setting allows holding prevents downshift into second when the shifter is set

to "D", and prevents downshift into first when the shifter is in "2". Another curious feature with the

Japanese version is that lock up is also available in second gear.

Actually, there is a difference in the control systems, the jap version has more options, but I believe the physical gearbox is interchangeable.

 

The 4 speed automatic transmission is a lockup type. When in drive mode, gears change 1-2-

3 then 3 lockup, giving the effect of 4 gears. When overdrive (4th) is switched in, the change

goes 1-2-3-4 then 4 lockup, giving the effect of 5 forward gears. There is a communications link

between the automatic transmission control computer and the engine management computer,

and this amongst other things, allows the engine computer to retard ignition, thus momentarily

reducing engine power, during auto gear changes. Auto gear changes therefore are very smooth.

The automatic transmission fitted to the turbo model is stronger than the one installed in the non

turbo. Although the gear ratios are almost identical, there are many minor differences between

the two transmissions.

 

The Japanese automatic transmission has many more features than the export models.

A "power", "normal" and "hold" switch is fitted to modify transmission shift points. The effect

of the "power" setting is to delay upshifting, but does not alter the maximum RPM that change

occurs. In order to change at the red line or rev limiter speed, one must operate the shifter

manually. The hold setting allows holding prevents downshift into second when the shifter is set

to "D", and prevents downshift into first when the shifter is in "2". Another curious feature with the

Japanese version is that lock up is also available in second gear.

 

Wow, learn something new everyday, cheers for that matey. i was answering due to physical, as no one has really gone into too much depth when asking for a new gear box

So the answer then is yes, the gearboxes are the same, you were correct Ian.

 

Jeff TT

thankyou everyone

Nevermind that, put a manual init, you will wish it packed up years ago... lol