Transmission Speculation.

[NESW20]

i'm sure it'll be fine for me since 1) it's gonna be n/a from Toyota 2) i won't turbo mine

[Dimman]

Anyone out there running a manual 6 speed in an IS250 care to comment on the transmission? Potentially what this car may end up with.

[ichitaka05]

Originally Posted by Dimman

Anyone out there running a manual 6 speed in an IS250 care to comment on the transmission? Potentially what this car may end up with.

Isn't Dark own IS250? Not sure it's AT or MT... but I remember seeing on this info.

[Dimman]

Originally Posted by ichitaka05

Isn't Dark own IS250? Not sure it's AT or MT... but I remember seeing on this info.

His says IS250 AWD, they are only 6 speed auto I think.

(That thing still an Altezza in Japan?)

[ichitaka05]

Originally Posted by Dimman

His says IS250 AWD, they are only 6 speed auto I think.

(That thing still an Altezza in Japan?)

Oh I see, well IDK who else has IS series.
Nope, it became IS series after the first gen.

[nate89]

The altezzas (is300) had a problem with their manual transmission. I'm not sure about max figures, but I know people said the transmissions real jerky and hard the drive. Most said they wished they had the auto if they would've known.

[Dimman]

Originally Posted by nate89

The altezzas (is300) had a problem with their manual transmission. I'm not sure about max figures, but I know people said the transmissions real jerky and hard the drive. Most said they wished they had the auto if they would've known.

Is that the Altezza/IS200 6speed (With the BEAMS 3SGE) or the IS300 5 speed (VVT-i 2JZGE)? The 2JZGE powered one had the W58 5 speed shared with the non-turbo Supras, nothing special maybe good for 300 lb-ft.

Don't know anything about the 6 speed except from what I've heard here that it's the same (or same family?) as the ones in the RX-8, Miata and S2000.

[ichitaka05]

Originally Posted by nate89

The altezzas (is300) had a problem with their manual transmission. I'm not sure about max figures, but I know people said the transmissions real jerky and hard the drive. Most said they wished they had the auto if they would've known.

I've texted around to see about this fact... and it's nothing to do with tranny. Actually the oem clutch is the main problem and not the actual tranny. When people tune their engine some of them forget the upgrade the clutch. Oem clutch Lexus use cannot handle after certain hp (they said is250: 260~300, is350 turbo it) and it start to slip like crazy.

Originally Posted by Dimman

Is that the Altezza/IS200 6speed (With the BEAMS 3SGE) or the IS300 5 speed (VVT-i 2JZGE)? The 2JZGE powered one had the W58 5 speed shared with the non-turbo Supras, nothing special maybe good for 300 lb-ft.

Don't know anything about the 6 speed except from what I've heard here that it's the same (or same family?) as the ones in the RX-8, Miata and S2000.

Yeah, Altezza's 5sp is using Supra's W58 tranny. I'm trying to remember 6sp is... but I can't remember

I know the IS250 tranny code is A960E and A760E.

[ichitaka05]

Originally Posted by MatadorRacing_F1

^WUT?

I think, he deleted the comment, so it looks like you repy on my comment.

[Matador]

Originally Posted by ichitaka05

I think, he deleted the comment, so it looks like you repy on my comment.

lol. Crap, delete pending.

[BoostJunkie]

I'm with Dimman I want a tranny that is at least a Lil over built because I also no matter what will be turboing this car, but the S2K tranny is ok but if you've ever road in or driven one you know that first gear is a waste, given I know it's your "get started" gear but honestly they should have extended it a Lil on. Power wise I don't think tq will be to much of a problem seeing as it's a boxer engine, but then again look at some wrx's done right, decent amounts of hp and tq, so like I said a Lil overkill on tranny would not hurt anything, would actually be in toyota's favor

My .02
+ yells .02
= 1.38!!

[bigbcraig]

Originally Posted by BoostJunkie

My .02
+ yells .02
= 1.38!!

wut?

I agree with you - it's be nice to have a tranny that handles 300-350 ft*lb, but I think that any more than double the stock engine, is just adding unnecessary weight. If you're going to spend the money building the engine, you can afford a gearset and clutch. I'd also say that shift feel is much more important to me than tranny strength - I don't want it to feel like a clunky T-56!

A big rear axle is something I'd like to see, I think it's much easier to justify overengineering a diff. (and sometimes quite hard to fit a larger one in!)

[BoostJunkie]

Originally Posted by bigbcraig

wut?

I agree with you - it's be nice to have a tranny that handles 300-350 ft*lb, but I think that any more than double the stock engine, is just adding unnecessary weight. If you're going to spend the money building the engine, you can afford a gearset and clutch. I'd also say that shift feel is much more important to me than tranny strength - I don't want it to feel like a clunky T-56!

A big rear axle is something I'd like to see, I think it's much easier to justify overengineering a diff. (and sometimes quite hard to fit a larger one in!)

^agreed^

[Matador]

Originally Posted by bigbcraig

wut?

I agree with you - it's be nice to have a tranny that handles 300-350 ft*lb, but I think that any more than double the stock engine, is just adding unnecessary weight. If you're going to spend the money building the engine, you can afford a gearset and clutch. I'd also say that shift feel is much more important to me than tranny strength - I don't want it to feel like a clunky T-56!

A big rear axle is something I'd like to see, I think it's much easier to justify overengineering a diff. (and sometimes quite hard to fit a larger one in!)

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