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Registered:
September 2003
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W58 gearbox ratios
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Mon, 05 April 2004 17:09
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Hey Dudes.
I have a mk3 Supra with a w58 gearbox. In 5th gear at 110 kph I'm doing 3200 rpm. I have no idea why Toyota would make a GT car with such petrol guzzling rpm's at cruising speed. Anyway, I want to drop the revs down to around 2500 rpm. Any ideas on if this can be done, correct ratios and availability of gearing?
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: W58 gearbox ratios
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Mon, 05 April 2004 22:10
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Use a diff with 28% taller gearing.
What is your diff ratio? Should be on the build plate.
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Registered:
November 2002
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Re: W58 gearbox ratios
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Mon, 05 April 2004 23:37
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I'm surprised by this because the W58 g/box already has a more highly over-driven 5th gear in compariosn with the W57, 0.86 to 0.78, just for that reason you have given. I suspect a diff ratio change here.
Mitch.
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Location:
Brisbane
Registered:
May 2002
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Re: W58 gearbox ratios
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Tue, 06 April 2004 00:11
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NA MA70's had diff ratios as low as 4.3:1, which could definitely explain this situation. Is your Supra a local or JDM model?
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Location:
Malaysia,Kuala Lumpur
Registered:
July 2002
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Re: W58 gearbox ratios
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Tue, 06 April 2004 10:47
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Yes pleaaasseeee...i'd like to know too, i'm in the midst of changing my finals to 4.3 ish or 4.5 ish....
any input greatly appreciated.
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Location:
Sydney
Registered:
March 2003
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Re: W58 gearbox ratios
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Tue, 06 April 2004 23:39
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On this subject, I have a JZA80 W58, with the Altezza LSD, I think the Ratio is 4.11, originally hooked up to the IS200 6 Speed, will this effect gearing, making it better or worse? And also the speedo, will it be out?
Cheers!!
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Location:
Brisbane
Registered:
May 2002
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Re: W58 gearbox ratios
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Wed, 07 April 2004 01:10
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NA JZA80's came with a 4.0:1 diff ratio, so your gearbox should work well with a 4.1:1 ratio. Speedo will probably be slightly affected, but this depends on the tyre diameter as well as the final drive ratio.
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Location:
Sydney
Registered:
March 2003
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Re: W58 gearbox ratios
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Wed, 07 April 2004 02:24
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Sweet!
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