5 replies to this topic

[Scotty24]

I have a Rover Mini 1275cc SPI automatic. Naturally most people would say why tune an auto, it defeats the point of performance. However I only have one leg so manual isn't an option (legally anyway)...

I realise that the easiest thing to do would be do dump another engine and gear box in - I am thinking a motorbike engine with a sequential gearbox. However until I can afford this I wanted to see what else I could do...

Already have a stage one kit..

Would stage 3 work well with an auto? What BHP can the auto gearbox handle?

Any advice or thoughts would be appreciated.

Cheers

[Bungle]

the engine you can tune the same way as a manual car (cylinder head next) , it's the gear box that's going to be the weak link

i'm not sure how much more the box can take

[Scotty24]

Thanks bungle, finding out how much the auto gearbox can take seems to be the biggest issue..

[Bungle]

guessworks might have some experience with auto boxes

[ShoutforJoy]

Take a look at the Automatic Mini Register, lots of topics on upgrades, like this one: http://autominiregis...read=735&page=1

It's not necessarily the box that the weak link, and there are upgrades available.

"There is a 1435 stroker developing over 100hp at the flywheel in Sydney and the auto is coping with it."

[MRA]

There are mods available that will strengthen the auto box, the weak spots are certainly not the case or bearings as in the manual, SC drops are available but at a cost, like all modifications.... the more power the more cost.

Depending on how far you go also depends on the associated idiosyncrasies, such as extra noise, vibration and harshness (NVH)