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Triumph TR6 - TR6 Improvements

I'm considering installing a W58 Toyota 5-Speed Transmission and maybe a Nissan Differential. I'm curious if any of you have made either of these modifications and if so how difficult, how expenisive and whether it was worth the aggravation. All comments welcome. Thanks.
db
Doug Baker

Doug, I've done both. Don't regret either one. They are priced to be competitive with stock replacements so not cheap. Both kits are very complete and are direct bolt in with no cutting or drilling. Both suppliers are good to deal with. If you do both, you have to shorten the driveshaft by about 2", but RG sells them now if you prefer that route. I like both of mine.
NFI

Rob
rw loftus

Rob,
I guess I misunderstood about the drive shaft. I was given to understand that with the W-58, you'd indeed have to shorten the drive shaft, but if you matched it with the Nissan differential, that would be unnecessary. I'm looking at local sourcing of both with the kits for conversion. Is that a reasonable approach? I have a line of a W-58 for about $300 and about the same price for the differential, then, of course, the kit costs or conversion whichever. No not cheap, but I'm looking at having to overhaul my 4 speed AND differential anyway so that's $'s that could be applied to the improvements or so goes the logic I offer my financial supporter (AKA spouse).
db
Doug Baker

Doug, nuttin wrong with the Supra box, but I would really contemplate the Ford box.
DON KELLY

Don, tell me more. I'm not familiar with a Ford Transmission that'd fit the -6.
db
Doug Baker

I think it's just the other way around Doug. If you go with either the w58 or r200 (not sure which) you do not have to shorten the driveshaft. I did my changes for exactly the same reason, price and probable reliability. I paid $200 for the tranny and bought the diff from RG, who also sells shortened driveshafts now. He didn't when I did mine. Check his websight for driveshaft prices. Mine cost $65 cash. Don is right, there is a guy in I think Mass. whose name is Dupont making Ford tranny kits now. Kit comes cmplete with rebuilt tranny and ratios to your spec. Don't know price. For what it's worth, when I did my w58 2 years ago, I asked Herman how many kits he had sold, and it was around 300 then.
rw loftus

There are know about 4-5 different people doing different Ford kits.
DON KELLY

The one thing I don't care for, is that the stick shifts lower in 2nd and 4th gear. This makes me lift my elbow higher being that I have an armrest. This is not a problem if you don't use an armrest. Tranny and diff. modifications are mostly bolt on. It will cost $$$ but, I've found it to be worth it because tranny and diff doesn't leak, no rear end clunking, tranny is lighter in weight and shifts smoothly and reliably. Gear ratios differ depending on where the toyota tranny is coming out of. If it is a true w58 from a Supra, just pay the money. They're hard to come by. Nissan diffs come in different ratios. I ended up with the 4.08x1 rear end. Fast off the line, but rpm to high for me when going over 80m.. opps? I mean highway speeds. If I were to do it again, I would put a 3.54:1 for cruising. When you shorten your driveline, make sure you balance it. Don't assume that the shops will do it. I assumed they balanced mine initially and had a lot of car shaking beginning at 70mph. Hope this info helps.
benji

Benji,
Thanks. Appreciate your comments.
db
Doug Baker

http://tr6.danielsonfamily.org/
Ken Shaddock

db... I should have been more specific with the link. You may already have it from previous posts. Good luck!

Ken

http://tr6.danielsonfamily.org/5Speed.htm
Ken Shaddock

The 5 speed that Bobby has is an older version. A very good company sells it ,but there is a couple of new variants now.
DON KELLY

Thanks Ken. Looks like a great article.
db
Doug Baker

This thread was discussed between 15/08/2010 and 20/08/2010

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