supra gearbox conversion.

[AutokaT]

I'm going to do the auto manual convertion on my car soon with a toyota supra box and was woundering wich is the best box to use as I've read there were a few of them with some being stronger than others?
I thought someone said the split case wasn't as good as the steal case box? Is that right?

any input muchly appreciated...oh,btw how do you identifiy the diffent box's too..
thanks

[Grumpe]

The steel case boxes are stronger... For sure... But if you can't find a good one, try a late model Hilux box (the 2.7lt one)...

Dellow Automotive in Sydney are good with Conversions...

Give them a call...

[GTS_215KW]

kangz i think it was posted this some time ago
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First of all, there are a number of celica/supra boxes.

They are:

T50, in the early Celicas, Sprinters etc, commonly referred to as 'celica alloy case box', small input shaft which is prone to breakage Ratios: -3.484 3.587 2.022 1.384 1 0.861

W50, in the slightly later celicas with the 18R onwards, known as 'celica steel case box', used widely, VERY strong, crap synchros
Ratios: -3.755 3.287 2.043 1.397 1 0.853

W55, the first of the supra boxes (although they did come in celicas aswell), quite strong and cheap
Ratios: -4.091 3.566 2.056 1.384 1 0.850

W57, W58, the two main 'supra' boxes, only differentiated by ratios. The way to tell them apart is the W58 has an cast iron sandwich plate. Very strong. Came out on the older Supras and was still used on the 2JZGE Soarers.

R154, Known as the turbo box, its big, heavy and very pricey. One of the best OEM boxes going around, but near on impossible to find.

The W50 would be my pick if I were using it as a tower. Basically it is bulletproof (consider the age of the thing, most of them are tired) and if you do manage to kill one, it will owe you next to nothing. There is very little in the way of strength between the W50 and W58, although the W58 is a newer box and hence a sharper throw. Basically its a better box, but the price is not worth it.
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[Feenix]

Actually the alloy case boxes are stronger. Just because its steel doesn't mean its strong(er)

The alloy case boxes have larger bearings and more of them.

The strongest of the boxes is the late model W58. You can pick these up for about $1000 (I paid 850 for mine about 5 years ago fully reco'd). I've had v8s that have lunched the 'standard' boxes (W55 etc) but the W58 has been and still is going strong.

Don't get me wrong the W55 is strong - its stronger than a T5 (excepting the T5 international as fitted to VL turbo etc) and definitely stronger than the aussie 4 speed.

Hope this helps.

'nix

[fdrx7]

I used a W57 in the 7m-gte Soarer conversion I did. I tried VERY hard to get a R154 (or 154a) but honestly they're impossible to get. As soon as they become available - they're gone.

[Kangz]

AutokaT,

The R154 is by far the strongest. They usually go for $1500-2000 if you can find one. The W58 is probably the one you want. A second hand one can go anywhere from $300 up as they are still used in some production cars now, hence you can get very new models and very old. I wouldn't pay anything more than about $500 for one.



From the left, T50, W50, W58, R154

The way to tell the W57 apart from the W58 is a cast iron snadwich plate in the W57. It's really obvious if you see it. The W58 is all alloy.

See how bloody big the R154 is!

[Jim]

I ran a celica steel case box (W50) in the 7MGTE powered crown..well, I should say I ran 3 of them! nice and strong, but if I accellerated inb 5th at freeway speeds it would blow 5th gear clean off the back of the shaft as soon as it came on boost. I wouldnt reccommend one.

I changed to the R154 box and gave it arseholes with no problems whatsoever.

My pick is the late supra with the steel sandwich plate, as they are relatively cheap and common. Dont use the alloy sandwich plate ones behind a v8, it wont last. these are from jap coronas and 1GG n/a altezzas.

[AutokaT]

brilliant.thanks guy's.exactly what i was after

so I'm looking for a good w57 or w58 box then.what models did the r154 come in?? and the w57-w58's??

Do they all have the same bolt pattern btw??they look differnt from the photo..?

[GTS_215KW]

nah man, they are all different, you will need a different bellhousing for each of the boxes.

[GTS_215KW]

Kangz: hey dood, i was just after some clarification on the difference between the W57 and the W58 box as u seem to have contridicated yaself between this thread and the other one.

W57, W58, the two main 'supra' boxes, only differentiated by ratios. The way to tell them apart is the W58 has an cast iron sandwich plate. Very strong. Came out on the older Supras and was still used on the 2JZGE Soarers.

The way to tell the W57 apart from the W58 is a cast iron snadwich plate in the W57. It's really obvious if you see it. The W58 is all alloy.

just wondering which is correct.

Thanks dood

[TRD-KINGSWOOD]

The W58 has a cast "steel" selector detent plate/centre bearing plate.

The W57's, 56's and 55's are all alloy cases.

This is only an observation. But it makes sense, W58's were the box behind 1GGTE's and ZE's. 1GG non turbos had the all alloy boxes.

[GTS_215KW]

Thanks TRD-KINGA

[kalium]

I am picking up a 1JZGTE on Friday, and have rung around and found a gearbox from a 1G Twin Turbo.....for $550...

Will I be able to fit one of these to the 1JZ? Are these the W58?
Will my 1JZ eat it for lunch??

Thanks!

[Shifty]

That box will be a W58. You will need a new bellhousing to fit the 1G box to the 1JZ block.

Everyone please note that there are also 3 diffrent shifter positions available on the W5x boxes. One has a rear remote shifter, one is towards the back of the shift plate, and the other is about the center of the shift plate.

[kalium]

Is there a factory bellhousing that will hook the W58 and 1JZ together, or am I stuck with making an adaptor plate ?

Also, with the shifter locations, is there much in it? Because I am putting the whole setup into a 260Z, and I think that the shifter location in the Zed is a bit furthur back.....I guess I can always cut holes in the floor though

[Norbie]

You need a bellhousing from a 1JZ-GE or 2JZ-GE (non-turbo) to bolt a W58 to a JZ series engine.

I have a 2JZ-GE box, and it has the remote shifter arrangement which puts the shifter directly above the uni. I'm currently in the process of swapping an internal shifter mechanism from another W58, which seems do-able with a small amount of machining.

[kalium]

hmmm, ok. This may be a stupid question but...will the bellhousing from an Auto box 1JZ/2JZ bolt up to the W58 ?

[Norbie]

No it won't. And even if it did, where would the clutch fork go?

[Shifty]

It would go beside the thermal transmogrifier... of course!

[kalium]

Actually Ben Ellis had a his Auto Bell housing modified to fit the clutch fork AFAIK. They also had an adaptor plate to fit the W58 box up to it.

[Nick]

Awful lot of ****ing around there..