[CELICA XX]

I knew the W58 was still offered in the MK4 if you had the NA version, however it can also be found in the Lexus SC300 from the mid 90's.

 

[williamb82]

most of us already know that. it is behind every non turbo 2jge, and 7mge unless its an auto. not sure about the 1jz's though, the 1jzgte's got the r154 so the n/a's may have gotten the w58 as well
william

 

[SupraFiend]

You can find W trannies in lots of toyotas, from trucks to mk1 supras. I think a w55 is the same tranny with different gearing, so that case has probbaly gotten lots of use by toyota

 

[williamb82]

i thought the w55 was a steel case as aposed to the aluminum case of the w58? also, all the gears are taller except 4th. the w55 was mainly used in trucks i beleive. if i remember correctly, thats what don c. has in his 7mgte powered mkii, a w55.
william

 

[Norbie]

The W50 has the steel case; all later W5x boxes are alloy case. The main difference between them is the W58 and W59 have a steel sandwich plate, while the others (including the W55) have an alloy sandwich plate. Obviously the steel plate boxes are stronger, which is why you'll find them in high-load applications (ie W58's are mostly used behind 6 cylinder engines, W59's are mostly found in light trucks).

 

[rivetslag]

I have a w56 in my one ton toy pickup, which is a tranny I've found very little info on..the specific gearing at least, as it's still a w58 type...

 

[Jeff Lange]

most of us already know that. it is behind every non turbo 2jge, and 7mge unless its an auto. not sure about the 1jz's though, the 1jzgte's got the r154 so the n/a's may have gotten the w58 as well
william

Well, there was never an N/A 1JZ supra, but maybe some variation of the motor in some other car got the W58 at some point.

 

[Norbie]

Yes, NA 1JZ's can be found in various JDM vehicles, eg lower-spec Crowns.

 

[Jeff Lange]

Does it have a W58? (It seems most Toyotas at some point had a W58, lol)

 

[Supra Guy Scotty]

Then what is it in the SC300? Is it an N/A 2JZ? I've been curious about that since the body lines are so similar to the Soarer.....

Scotty

 

[SupraFiend]

yep, 2jzge, just like in the NA mk4 supra, gs300, and now is300.

 

[cheappower82]

So is there a difference in the input shafts of our W58's vs. the 2jz-ge W58's?

 

[williamb82]

no, but the input shaft bearing is bigger on the newer modle w58's.
william

 

[dynamic73]

What years and cars did the new HD type W58 transmissions come in. I going to do a auto/manual swap soon. I'm thinking I might as well get the Heavy Duty W58 trans. I'm going to get one from the junkyards. So they both should be about the same price.

 

[SupraFiend]

don't bet on that. Doesn't matter if the if the tranny is very similar, as soon as it comes off a car with a Lexus badge or a mk4 supra, I guarentee the price will skyrocket compared to the one in the ol mk2. I've heard the w58 in the na mk3 supra is a little stronger then the mk2 one, but the mk4 one is still the best.

 

[trdmkii]

so if one was to get a w58 from a 2jz n/a behind a non turbo mkiv, would you just have to change the bell housing to put it in the supra?

 

[Norbie]

Not quite that easy. You also have to swap the shifter mechanism, unless you like your shifter sticking up where the handbrake should be! This isn't hard to do if you have a Mk2 box to scavenge parts from. You will also need to replace the speed sensor in the back of the box with the speedo cable gear from a Mk2 box, but that's a direct swap so no biggie.

 

[dynamic73]

Yes Norbie I've read all about it on your website. Thanks a lot for the info. But I thought I've read somewhere that the MKIII Supra's also had the heavy duty W58 trans. I think they started making the HD W58 in 1988 or 1989. I'm not for sure. Does anyone know what year they made the HD W58's for the MKIII's??? I'm going to have to do some more research. Yea any part off a MKIV will cost your an arm and a leg. Plus there's not too many of those cars in the junkyards. If I don't find the HD trans. The old W58 trans are sure plentiful in the junkyards. I see them going for like $40 a piece around here. And I know the old W58's are still plenty strong. I'm not looking to make a whole lot of power in my 85 Ceica. So I'll probly end up with the old type W58.

 

[Chris-6MGTE]

The only real advantage to using a W-58 from a N/A mkIV or Lexus (SC 300, GS 300, IS 300) is that that unit has double row synchros and makes shifting a bit smoother. Please do not think that the the over all strenth is any better than the orginal W-58 that came in your supra. My orignal W-58 lasted the longest (2.5 years at over 300whp), the mkIV w-58 lasted 4 months with over 400whp. Now granted, the mkIV tranny was seeing more power and more abuse than my orignal trans, but for the extra money I spent on the mkIV w-58 (which I was told that it had been built to take over 500whp) it was not worth the trouble to swap all the needed parts to make it work in the mkII. I am now on my 3rd trans and it is a w-58 from a 86 mkII - I know it is weak so I'm keep ing the boost limited to 10psi so maybe it will last untill I get the spare time to do the R-154 swap.

Do not belive the hype about how strong these w-58's are, they are virtually the same unit that is in your car. Now I'm sure some N/A mkIV guy has posted over 500whp on his orginal trans, but I garuntee that he will not be driving it on the street at that power level for very long.

Bottom line: w-58 is good to 300whp, any more and it will fail - just a matter of time and driving style
r-154 is good to over 700whp, a good friend of mine is doing just that in his daily driver mkIII (I think he has the most powerful mkIII in the US, maybe the world - it is his orginal trans and his DD)

 

[dynamic73]

Thanks for the info Chris. I'm glad you cleared this up. Looks like the best way to get a stronger trans. Is to do the R154 swap. I probly won't ever see over 300HP in my car. So I think the W58 will work out just fine.