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The final (97 - 00) TPi Cooper S Works had 90bhp which gave 0 to 60 in 8.9 secs and 102 mph however it is not that simple.
The TPi Minis had a very high final drive ratio to meet noise regulations (2.76:1) which reduced performance
example
- SPi Cooper (91 - 96), 63bhp, 3.1:1 final drive, 11.5 sec / 92mph
- TPi all Minis (97 - 00), 63bhp, 2.76:1 final drive, 12.2 / 90 mph
and just to complicate things most performance built engines use 3.44:1 final drive - great for performance but might need ear defenders for motorway cruising :D
Also the 13 inch wheels which were made available for the first time on the TPi minis (as big wheels were/are the fashion) resulted in a performance loss
- TPi Sports Pack (63bhp) - 12.8 / 84mph
90 bhp is a good figure to aim for as it will be a reliable road engine, higher outputs are possible but the engine becomes less flexible and wears out quickly.
If you want sensible road power and big track / mini run power then a variable boost Turbo is great but complicated and expensive.
So in conclusion (at last I hear you say!)
Find a Mini with a 90bhp engine, 3.44:1 diff and a nice set of 12 inch wheels and you will have a wee flying macine - 0 t0 60 under 8 secs I would think
Thats what I plan to fit to my classic eventually :D
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Cheers Duncan, i'm more than likely to be getting one from PL Mini, some very nice 90 BHP motors, hopefully with the 3.44 diff ;)
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TPI minis 90mph? Ats before ye change into 4th. Mine ene filled the clock, it was a standard 1.3 Mpi with a RC 40 cat back exhaust.