Toyota W gearboxes.

[_Marc_]

Im not in the whole "toyota scene" and therefore know better part of sweet fuck all.

Looking for a gearbox has to be from the toyota W series of cogboxes. Im hoping there is something there i can use that will support upto 350kw at wheels.

Failing that my other option is a series 4 or series 5 (FC) RX7 gearbox.

Also one thing to consider is how easy is to to source a replacement gearbox should one of these fail.

Cheers.

[jmac]

imho no chance a toyota w box will handle that (assuming around 450ft lbs of torque?)

[GreyBeard]

AFAIK the only toyota's with a chance would be the 154 (R) or 160 (V)
http://en.wikipedia.org/wiki/Toyota_R_transmission
http://en.wikipedia.org/wiki/Toyota_V_transmission

[Shifty]

I wouldn't expect top reliability for a Toyota W-series box with anything more than 300atw. That's not to say they WON'T last but PLENTY of people have broken them with power outputs in that vicinity.... if you have to go to the expense & trouble of a covnersion then you're better loking at another option.

[Norbie]

I killed four of them with less than 250rwkw. No static burnouts, only two runs down the drag strip, shitty tyres with bugger-all traction. 350rwkw would mean a very limited lifespan unless you're extremely gentle with it, all the time.

[Billzilla]

Hp/kW means little when it comes to rating gearboxes or drivetrains.
How much torque are you planning on?

[Shifty]

Hp/kW means little when it comes to rating gearboxes or drivetrains.
How much torque are you planning on?

Yes; but as a general rule that much power means enough torque loading to break it.

[Billzilla]

Yes; but as a general rule that much power means enough torque loading to break it.

And as always, general rules don't bear close examination.

What's more likely to break a car gearbox?
A 400hp Mack truck engine or a 400hp 4AGE?

[Norbie]

I think that would have a lot to do with vehicle mass and overall gearing, which would be vastly different in those scenarios.

[Billzilla]

I think that would have a lot to do with torque

Yep.

[260BC]

Nissan Z32 five speed will do it, bloody tough box and still available new.

[adamRSLC]

My circuit car has a 220 rwkw 308 and it broke about 4 W58 always in 3rd gear , either on the shift ( possibly my fault ) or if getting a little axle tramp through 3rd it would tear of all the teeth from that gear . Being extra nice to my last one ( from a 1gg supra ) made it last ( never broke ) but had to go easy on the 2-3 up shift .

adam

[Captiva Fan]

Failing that my other option is a series 4 or series 5 (FC) RX7 gearbox.

Just to add to what everyone else has said about the Toyota gearboxes (ie. how no W-series will cope with 350kW), my recollection of the Series 4 & 5 RX7 gearboxes is that you'll most-likely lunch one of those as well (assuming it's standard).

[Norbie]

Yep.

You should be aware that the torque output of the engine is only one part of the picture. The amount of time the transmission is exposed to max torque is also important, and this is heavily influenced by the mass of the vehicle and the overall gearing used. More important still is shock loading which is likely to be higher in a high-revving, high-output engine.

Another factor which often gets overlooked is the number of cylinders. A 2 litre six-cylinder engine will be kinder on the transmission than a 2 litre 4-cylinder engine with identical power and torque output. This is because the torque output of an internal combustion engine is not continuous, it's actually a series of pulses which coincide with combustion events.

So it's not as simple as saying this transmission can cope with X ft/lb, regardless of its source or application.

[Sicarius123]

Where's a good place to buy a JZ W58? Mate of mines been looking and can't find them with the right bellhousing, only 7M ones.

Also with the S4 + 5 RX6 boxes, I thought it was common to put a Toyota W series box in them because they're stronger?