RXRodger

iTrader: (2)

I posted an update on this in my build thread (https://www.clublexus.com/forums/bui...r-build-7.html) but I am putting it here to see if anyone else has had this issue with the W58. During the last race, we lost 2nd gear, I had a spare W58 so the night between race segments we changed the trans. I finally got around to tearing it down and found the 1st/2nd gear shift fork broken. In my daily driver, I bought it for a song because it also would not go into 2nd gear, and when it happened on the race car it was very similar in how it acted so I am going to assume it has the same problem. Two same broken shift forks in my 2 manual cars, is this a common issue with the W58? Don't tell me I need to go to R154, etc because the race sanctioning body won't allow a swap from anything stock, so I am stuck with the W58. I have it torn down about to replace the fork along with bearings, synros, seals, and the main input shaft because the countershaft drive gear has a lot of wear on it. If common, is there any fix that might prevent this?

CatManD3W

iTrader: (18)

You might be able to use the r154 billet shifter forks..Id ask around and see if those will work in the W58

KahnBB6

iTrader: (5)

As far as I know the billet R154 shift forks are not compatible with the W58's internals. The physical sizes of the gears are different between the two transmissions. Those billet forks would have a better chance of working in an R150, R151 or R155 than in a W-series.

Aaron at Driftmotion or the folks at Marlin Crawler would be the final authorities to answer this question since they manufacture these parts but I think they will confirm the above.

Factory W58 shift forks from the SC300 or Supra series gearboxes are your options.

Marlin Crawler, Driftmotion, Jack's Transmissions, and SpeedForSale are four outfits I know who will rebuild W58's.