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Thread: N/a 2jz 5 spd vs TT 1jz 5 spd

  1. #1
    Forum Member 1st year Apprentice
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    Default N/a 2jz 5 spd vs TT 1jz 5 spd

    Hey everyone, just starting to do my research before I possibly start my engine and drive line conversion.

    Just after the differences between the n/a 2jz gear box and the tt 1jz gearbox? Strength? Ratios?

    I’ve read a lot of n/a+t jza80 supra guys still getting around the 500hp through them? Is it worth the effort in finding the tt 1jz box?

    Any differences between the fitments of the boxes?

    Any help would be much appreciated.

  2. #2
    Current UZA80 owner Chief Engine Builder JustCallMeOrlando's Avatar
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    Default Re: N/a 2jz 5 spd vs TT 1jz 5 spd

    As you will find as you do your research, how well a box will last will come down to how it's treated, how it's been treated, your clutch, and what car it's in (weight will affect load).

    The W58 is a great box, smooth shifting, strong for it's size. As with the rule, "no substitutes for cubes" the same can be said of the R154. It's strong, because it's built like a brick shithouse. Unfortunately, it shifts like a truck too

    If you have the option of the R154, go for it, they are a stronger box, plainly due to their size. They have problems disintegrating a thrust washer, but fixes are available for that, and aside from that they're pretty fullproof.

    On the flip side, the W58 is cheaper, more abundant, better shifting, it has a lot going for it. It is more likely to be broken though, once again due to pushing it way beyond the limits of a gearbox of its size. (depending how you drive obviously).

    Have a search, there is a wealth of knowledge about.
    Teh UZA80 - Project Century - Remotely p00'd by association

  3. #3
    Forum Member 1st year Apprentice
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    Default Re: N/a 2jz 5 spd vs TT 1jz 5 spd

    Thanks for the info!

    I have a few avenues I can take with my car; one option is too keep the 1uzfe, and turbo it, which is looking like the most viable option, and use the manual conversion bell housing.

    Or pick up a cheap 1jz motor minus turbos and plenum, use the items I want, and use either of the above-mentioned gearboxes.

    Last option is to pick up an auto 2jz tt front cut, or even just a motor and see how long the R145 or the W58 last I guess.

    The car will be semi striped, and get driven hard on and off the track, so ideally I don’t want to brake gears and synchros every weekend.
    Past: 490rwhp super happy fun R32.
    Now: super happy slow LS400.

  4. #4
    I make people cry Chief Engine Builder Draven's Avatar
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    Default Re: N/a 2jz 5 spd vs TT 1jz 5 spd

    in a barge-arsed soarer, I'd be going for the R154 - much better designed to handle that extra weight. The w58 is plenty strong, but once you start pushing big numbers it is a lot more reliable in light cars (which is why the rotor drag boys love them - in a 900kg car they last forever)
    http://www.toymods.org.au/forums/showthread.php?t=7465
    Quote Originally Posted by xero View Post
    and of course campbell newman's completely fucking everything he touches so badly that he should be called dick fingers.

  5. #5
    Rest in Peace Conversion King ViPeR_NiPPleX's Avatar
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    Default Re: N/a 2jz 5 spd vs TT 1jz 5 spd

    im with draven, r154 will cost more, but will cope with the extra load if you want to go for more power (no doubt you will )

  6. #6
    Junior Member Automotive Encyclopaedia Nim's Avatar
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    Default Re: N/a 2jz 5 spd vs TT 1jz 5 spd

    You've got to balance that though. R154 might last longer, but how much longer? Is the saving in time having to swap out your gearbox worth the worse shift?

    Obviously the R154 will be stronger, but then you can allways just replace the W58 when it pops, especialy as they cost less.
    Daily: DC2 Integra VTiR :: 96kw @7300rpm - 132nm @6300rpm
    Techno Toymods | Beninca Dyno Day Results 10/9/05 | GOR Cruise '06 | My Photography and Illustration

  7. #7
    Current UZA80 owner Chief Engine Builder JustCallMeOrlando's Avatar
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    Default Re: N/a 2jz 5 spd vs TT 1jz 5 spd

    The probability though is that a properly sorted and well maintained R154 isn't going to break at all. So by that token, a lot longer.
    Teh UZA80 - Project Century - Remotely p00'd by association

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    Junior Member Automotive Encyclopaedia Nim's Avatar
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    Default Re: N/a 2jz 5 spd vs TT 1jz 5 spd

    Well that answers that question.
    This probably isn't the place for conjecture, but I'll bring it up anyway. I hear the R154 is actualy a bit brittle if you slam it through gears fairly quickly? It handles the big power, but start to shift that power quick, and apparently they aren't so tough...? Anyone heard/know about that?
    Daily: DC2 Integra VTiR :: 96kw @7300rpm - 132nm @6300rpm
    Techno Toymods | Beninca Dyno Day Results 10/9/05 | GOR Cruise '06 | My Photography and Illustration

  9. #9
    Current UZA80 owner Chief Engine Builder JustCallMeOrlando's Avatar
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    Default Re: N/a 2jz 5 spd vs TT 1jz 5 spd

    They tend to disintegrate a thrust washer, that aside, they're pretty bulletproof. Clutch dependent as Norbie described though.
    Teh UZA80 - Project Century - Remotely p00'd by association

  10. #10
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    Default Re: N/a 2jz 5 spd vs TT 1jz 5 spd

    For anyone who has done some racing in a 911, or driven one for that matter, they’ll know what I mean when I say you can’t shift them quick at all, shift like a Mack Truck, and often need too be rev matched on up and down shifting.

    I would really like to keep away from that… lol. I tend to shift quite heavy, and quick – although my RB gearboxes could take it.

    The car is a LS400, so it’s pretty weighty even after I strip it.
    Past: 490rwhp super happy fun R32.
    Now: super happy slow LS400.

  11. #11
    I make people cry Chief Engine Builder Draven's Avatar
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    Default Re: N/a 2jz 5 spd vs TT 1jz 5 spd

    every gbox will have its life shortened the faster you shift.
    http://www.toymods.org.au/forums/showthread.php?t=7465
    Quote Originally Posted by xero View Post
    and of course campbell newman's completely fucking everything he touches so badly that he should be called dick fingers.

  12. #12
    Forum Member 1st year Apprentice
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    Default Re: N/a 2jz 5 spd vs TT 1jz 5 spd

    Obviously nothing will last if it’s driven under abuse. I guess I’m just after the best realistic option suitable.

    Admittedly I know the 2jz 6 spd is what I need, but it’s not a finically viable option, and if I go down the forced induction path with the 1uzfe, I’m not sure if anyone has made a successful adaptor plate for it yet.
    Past: 490rwhp super happy fun R32.
    Now: super happy slow LS400.

  13. #13
    Toymods V8 Member Too Much Toyota CrUZida's Avatar
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    Default Re: N/a 2jz 5 spd vs TT 1jz 5 spd

    RushImports are making the plate right now.

    Its in a car being tested.
    Peewee
    1985 MZ12 Soarer - 1UZ Powered
    2013 86 GTS

  14. #14
    Forum Member 1st year Apprentice
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    Default Re: N/a 2jz 5 spd vs TT 1jz 5 spd

    Yeah, I thought I saw something on their web site about it, but no details with how testing was going, release date for the product, price ect.

    Any info on it Cruzida?
    Past: 490rwhp super happy fun R32.
    Now: super happy slow LS400.

  15. #15
    Toymods V8 Member Too Much Toyota CrUZida's Avatar
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    Default Re: N/a 2jz 5 spd vs TT 1jz 5 spd

    No, nothing yet.
    Every time I've asked I've got no reply.
    Peewee
    1985 MZ12 Soarer - 1UZ Powered
    2013 86 GTS

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