4G63 bellhousings to fit the w-55 Toyota trans

Bill Hincher · Post by **Bill Hincher** » Tue Aug 01, 2006 4:13 pm

Well.......I aint sure how this works but I hope you can all see what I been up to with these bellhousings

Bill Hincher
Toledo,Ohio

[/img]http://www.japaneseauto.com/mitstoyotat ... ptors.html[/code]

Post by **DJpowerHaus** » Wed Aug 02, 2006 3:28 am

Good to finally see you post. Cant wait to see finished parts.

jeffball610 · Post by **jeffball610** » Thu Aug 17, 2006 5:59 pm

I'm actually working on making one for my 2.4L narrow block to R154. Unfortunately it's been about 6 months since I got the transmission and I haven't done it yet. I'll get to it ASAP and try to post a tutorial or something for it.

Eric · Post by **Eric** » Mon Sep 25, 2006 9:39 am

I got my bellhousing mounted. I'm very happy with it. Definitely a solid, well made part. I will be doing a thorough write-up on clutch installation once I get all of the parts together.

Post by **DJpowerHaus** » Mon Sep 25, 2006 12:23 pm

I'd love to host any write up information you have to offer.

Eric · Post by **Eric** » Tue Nov 28, 2006 10:10 am

As of last night I have a complete clutch. It's installed on the engine and the engine is in the car. I tested the clutch pedal and it's working. I was able to reach down thru the hole where the shift lever comes up into the car and turn the driveshaft by hand when the clutch is pressed in (and the trans is in gear). When the clutch is released I can not turn the driveshaft. It "catches" when the clutch pedal is about half-way released.

If anyone has any questions I can help. There isn't much difference to installing this versus any other clutch besides having to track down the parts on an individual basis and getting the (FWD) flywheel machined. I will add a list of sources for the parts that I used on my website (http://b18c5.org/eric/bmw/) next time I update it.

Bill Hincher · Post by **Bill Hincher** » Tue Feb 20, 2007 10:07 am

Eric, the shy one,

wrote this

I've been digging and found that the W58 came in the MKII Supra's as we already know, but it also came in non-turbo MKIII and MKIV. The MKIV W58 is supposed to be a bit stronger, uses a steel sandwich plate in the center, and a few of the gears (supposedly 2nd and 3rd I believe) are a little wider.

Eric · Post by **Eric** » Tue Feb 20, 2007 8:32 pm

Hey now.

I'm still not sure if the W58 from either the MKIII or MKIV are exactly the same, however. Hopefully they are! Anyone have any experience with these?

Eric · Post by **Eric** » Wed Feb 21, 2007 9:04 pm

It definitely came in the MKIII and MKIV N/A models. A google search for "MKIV W58" will turn up lots of stuff...

This was posted to supraforums.com by Norbie on the differences made to the MKIV W58:

- there is no synchro on reverse, in fact it's not possible to have synchro on reverse with the engagement mechanism used
- a couple of the bearings are slightly wider (we're talking about 2mm), the main bearing at the front of the input shaft was one of them
- a couple of the gears are slightly wider (again about 2mm), I think it was second and third, both of which are the most likely points of failure in earlier boxes, that was certainly my experience anyway!
- for some reason reverse gear is also slightly wider; were people actually breaking these??
- synchro rings are a slightly different design, but there is no evidence of double-row synchro's on 2nd and 3rd as some have suggested
- a steel splash guard has been added under the gearset
- shifter mechanism has been slightly revised, including a roller bearing on the end of the selector shaft
- as noted above the MkIV box has an external shifter, but that's not really anything to do with the internals of the box, it's just because the driving position in the MkIV is further back than the MkIII and MkII
- input shaft is pretty much identical

I think there was other stuff, but you get the idea. In theory the MkIV box is a bit better and a bit stronger, but there's really not a lot in it.