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Discussion in 'General Supra Topics' started by Supra93, Sep 19, 2018.
I am sure a leak will be up in the near future....
These transmissions are not the best shifting transmissions but they are very strong. It's quite popular in Europe drift scene to bolt 2JZ/LS engines to the diesel ZF manual trans. I have a turbo 325i E30 and i bolted the GS6 to it and it's even on stock clutch at around 500whp. The N54 guys have many problems with their cars but manual transmission failing isn't one of them.
Now remember, Tada did say that one of the biggest factors was transmission feel. I am sure there will be some sacrificing of "refinement" for strength and durability. I mean, that's exactly the case with the V160 right?...notchy and noisy, but strong asf!
I’m fine with notchy and slightly noisy if it’s at the level of a V160 or Tremec Magnum.
I wouldn't even particularly mind the equivalent *feel* of an Aisin AR-5 or R154 Tripod if that’s all they could muster but I think *any* modern manual transmission for cars is way beyond any of the feel and limitations inherent in those.
As long as it’s equivalent to or smoother than the shifter and pedal feel of a V160 I don’t see any problem.
I can see the "refinement" going into the ZF8 Supras
Exactly! If someone wants a smooth shifting (still fast) MKV Supra, the ZF HP8 will more than handle the job.
It'd make for a great DD too
They will likely base it on a production manual, but like the 86 they will essentially create a 'new' trans based on feel that suits Tada's preferences.
Wasn't the manual transmission from the FRS/86/GT86/BRZ a Toyota transmission? I know for a fact the automatic was a Toyota transmission. I just find it funny that the automatic was before used in big, luxurious cars in the mid 2000's and then slapped that same transmission in a 2012 car.
Yes, the trans and diff were from the Altezza
Both the auto and manual are an Aisin box
Similar to the GRMN Mark X which used a reworked version of the RA62/63 from the IS250/200d/220d.
The automatic and manual transmissions are both supplied by Aisin, and are from the same families as transmissions provided to Toyota for the Altezza (AZ6 manual, also used by Nissan and Mazda) and IS250 (automatic). While Aisin is a part of the Toyota group of companies, and they were used in Toyotas as well - and were clearly used because of the Toyota part of the partnership, Subaru is the one sourcing them and as such they are stamped with Subaru on the casing.
The differential is an actual Toyota unit, manufactured by Toyota. It uses the LSD from the IS300 and the case and ring & pinion from the IS250 AWD (newer models use a 4.3:1 gearset).
This brings up an interesting point, clearly Subaru is the OE for the transmissions in the BRZ/FR-S/86. They are supplied to Subaru by Aisin, but based on earlier designs that Aisin developed for and with Toyota and are also sold to other OE's. Just because a part says Subaru on it means that it's a Subaru part, or a Toyota part. There is a lot that goes into engineering something, and of course there will be a familiar design language used, etc., but a Toyota engineer can easily spec a part from the BMW parts bin; alternatively, Toyota could work with a manufacturer on a design and it could say BMW on it. The Supra has a ton of BMW parts bin stuff on it, and stuff BMW developed for the Z4 and other cars, but unless a part was used by BMW for a good amount of time before the Z4/Supra project got rolling, it's impossible to know what came from where. A lot of people will point at various parts labels on the car as meaning it is or isn't a Toyota because of situations like this.
Arguments will go on about this for years, so buckle up.
I was hoping you'd chime in, Jeff.