What the fallah...w58 knowledge required

[Low_Aa63]

Ok so im cruising tard me and ooh ooh w58.. mite have me a look see

http://www.trademe.co.nz/Trade-Me-Motor ... 889581.htm

Now he says "From a MKIII turbo, genuine steel sandwich plate supra turbo box.

Don't be fooled by the w55 and w57's out there with alloy sandwich plate that claim to be "supra turbo" boxes. This is the real deal. The strongest of the lot."

I was under the impresion they all had steel sandwhich plates like the w55 and w57's i have happened to have owned, and it was the casing that was alloy.....Anyone care to enlighten!!

Also note he states "No, the soarer had a 1G-GTE and this is the box I ran behind it" is this correct??

[Mr.Phreak]

Isn't that Looonie's box??

[2LTR Rona]

Low - this might shed a bit of light on things

http://www4.tpgi.com.au/users/loats/technical/ma61/gearboxes.html

From what I have found out after hunting one of these down for my Capri project is that the only real way to see what you have is to either, open the box, as apparently Toyota stamped the box model on the sandwhich plates, why you would put it there is beyond me or the other way which is by calculating the ratios as the only real difference between the W57 & W58 is the final final ratio

image: W58 gearbox - note the steel sandwich plate

These boxes first appeared in Australiain 1984 in the 4 cylinder Corona. They were also fitted to Celicas and, obviously, Supras. Both 4s and 6s had exactly the same version, so everything said about using 4 cylinder Toyota 5 spd units applies to the Supra box. There was at least 4 ratios in them, starting with an extremely low 4.0:1, which was fitted to commercial vehicles, following by 3.7, 3.5 and 3.28. They have the same length input shafts as the other Toyotas and are virtually interchangeable with the steel-case. However, they do have a different bolt pattern. As is commonly known, these boxes are extremely strong. They're much stronger than a steel-caseToyota. Straight from a wreckers, this box will cost about $500, but a stripped and checked version is about $700.
There is another, extremely rare and much stronger, version of this box that was fitted to a 3.0 litre Twin Turbo. Its about half as big again as a normal Supra but apart from that it looks the same. It has been known to handle in excess of 550HP with no difficulties. If you can find one, you'll have to pay something like $1500-$2000, but they are very rare.