hey guys I know the r154 is a very robust and well designed tranny but it has its flaws like any street car can. mine is a daily driven car but I auto cross 2x a month and I have project money tucked away because in 3 years I plan on racing mine in pikes peak international hill climb. the first thing im going for is a 21 point roll cage and new garrett turbo, so after all of this I figured the tranny will be taking abuse so lets prevent problems before they surface.
the supra store sells this rebuild kit which looks real nice
http://www.suprastore.com/ulrbukitfsh.html
on top of this im wanting to buy a short through shifter from drift motion
http://store.driftmotion.com/static/i-bpm-202-07.php
and of coarse I would use a proper clutch that would handle 600 lbs of torque( im building this as a torque motor not a hp motor. im trying for 500 lbs of torque but plan on 600 to be safe)
the diff still grabs hard so im happy whith it, all else I can think is 1peice aluminum drive shaft(or at very least replace all the u joonts in my factory one)red line synthetics in tranny and diff, have the gear sets shot peened.
if any one else has any ideas how to make the tranny better I would like to hear it