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| Re: Toyota T-50 3T - Will it hold the power?? |
Subject: Re: Toyota T-50 3T - Will it hold the power??
by jmac on 2016/4/16 4:36:52
I'm just going to put this out there. When I was in my teens, I used to play with toranas a lot. they had the holden banjo diff which is considered a weak point to say the least. You could literally snap an axle (I realise you are talking about a gearbox, but the point is the same) with a stock 173 and a manual gearbox, by jumping off the clutch quickly enough often enough. In that guise the cars would be lucky to run a high 16, probably mid 17 second 1/4mile, so not too quick in that form to say the least.
There was a guy in SA called Rob Flego (I hope I'm remembering the name right) who ran a modded 186 with nitrous with an auto box in the same car. He stuck with the banjo diff, and with being able to launch with an auto, and do so smoothly, it wasn't until he was running into the low 10s/high 9s that he was constantly breaking the things.
My point being there's torque, there's the weight of the vehicle, and there's also 'shock loading'. You're putting the box into a car lighter than its original fitment, which is a plus. The torque will be higher than any NA a series almost without question. BUT, the 'big' deal here is you can control the shock loading. What the box will tolerate in steadily fed in force versus jumping off teh clutch is considerable, and that goes for any gearbox.
If you concentrate (and just to be clear I'm not accusing you of driving badly or anything, just talking about what it is that breaks things) on smooth launches and slipping the clutch a little more off the line, YES, you will go through clutches at a higher rate, but they are consumables and replaceable. Do _that_ and you'll get the box to last a decent amount of time.
People were putting these boxes behind holden 6s in toranas (more torque and heavier car) and they did survive ok-ish if treated properly. THen the supra boxes came along and everyone gravitated toward them. Don't get me wrong people were still breaking them, but it was mostly down to driving style.
Ride the clutch just a little more off the line (which if done right will actually let you build up boost quicker too) and soften the upshifts just a little, no full throttle 'flat shifts' and lift off the clutch a fraction slower after the upshift and you'll get a lot more life out of it.
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