Possibly A Stupid Idea.

[Johny Bravo]

I have an auto R31, and at the moment the car is putting out more power then the auto can handle. This is partly due to the fact the box is in pretty shit condition. I do have a spare auto box but i have no idea on the condition its in. I do plan to convert to manual using a R33 box. Any who, my question is: would a later model auto box fit my 31? ie; could i fit a r33 auto box or something.

My reason asking this is because i assume an auto box would be fairly cheap (due to people converting to manual) and hopefully a later model box would be stronger then a 31 auto and easy to fit?

Wanting to do this so i can get the most out of the car for the time being and because i wont be able to afford a conversion for some time.

So can anyone let me know if this is possible to do or if its a shit idea or what not. Still learning about skylines so any advise is appreciated.

I did pull a quick search but come up empty handed, i don't think the search function is as good as it used to be.

Cheers

Kurt

[Simon-S14]

while not a bad idea the problem is most of these late model auto trans are controlled by the engine ecu.. and since you probably wont have that it may be a real PITA to get it working as it should.

i would just either rebuild the current trans to hold the power and fit a shift kit with modified valve body if you want to retain auto... or fit a 33 manual box.

[Johny Bravo]

I've got nistune. Will that help?

And i will go R33 manual eventually, just dont see myself being able to afford that for a while.

[Johny Bravo]

Just read that a r33 auto box will fit easily except the speeding wiring is different, however, the r31 auto speedo will fit in the r33 speedo housing. So it sounds as if its very doable. plus the bloke who did it says take of is much much better.