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Location: Melbourne
Registered: May 2002
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W58 Forsale
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Wed, 25 September 2002 23:19
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Got a W58 gear box forsale, still in car.
want to swap for a W55
open to offers...
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I supported Toymods
Location: Perth
Registered: May 2002
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Re: W58 Forsale
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Thu, 26 September 2002 00:46

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Just one question? Why do you want to swap a W58 for a W55?
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Location: PNG
Registered: June 2002
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Re: W58 Forsale
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Thu, 26 September 2002 02:36

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Gidday
I have been following the other thread!! I think that you have got your facts wrong. I cannot think of any reason as to why u would want to replace the 55 with a 58. The 58 is oveall a better g'box as far as strength is concerned, it has a more overdriven 5th gear and the remainder of the gears are close spaces (close ratio) This is reflected in the fact that the 58 is some twice as expensive as the 55.
Craig
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Location: Melbourne
Registered: May 2002
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Re: W58 Forsale
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Thu, 26 September 2002 12:45

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well..
I think the W55 have higher ratio than the W58
the ratio in W55 is similar to a T50:
T50 : 3.587, 2.022, 1.384, 1.000, 0.861
W55 : 3.566, 2.056, 1.384, 1.000, 0.850
W58 : 3.285, 1.894, 1.275, 1.000, 0.783
as u can see, W55 have higher ratio in 1st to 3rd gear, therefore give better accleration? I guess?
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I supported Toymods
Location: Perth
Registered: May 2002
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Re: W58 Forsale
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Thu, 26 September 2002 13:26

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The spacing between the gears on the W58 is closer, meaning you'd be able to keep the engine closer to peak power for longer. I don't reckon the first gear of the W55 would really be of any substantial benefit...
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Location: Melbourne
Registered: May 2002
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Re: W58 Forsale
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Thu, 26 September 2002 14:09

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Yeah, you are right, the problem I got is the engine drop to 5000rpm in 2nd even when I chane at 7300 rpm in 1st
anyway, thinking of changing the rear diff to a 4.6 or 4.7..
I think this will be a better option.....
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Location: Hobart, Tas
Registered: May 2002
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Re: W58 Forsale
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Thu, 26 September 2002 14:33

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Uhh, the W55 is no less strong than the W58. Same case etc, just higher ratios. I got a w55 & 3.583 diff where other celis in other part sof the world got the w58 - most likely because of out much lower highway speeds.
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I supported Toymods
Location: Perth
Registered: May 2002
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Re: W58 Forsale
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Thu, 26 September 2002 16:18

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The W58 is the strongest out of the "Supra boxes" as it has a steel sandwich plate whereas the others have an alloy one. They tend to take a bit more power before they give in.
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Club President I supported Toymods
Location: Sydney
Registered: May 2002
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Re: W58 Forsale
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Fri, 27 September 2002 01:29

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JCMF,
Mate the casings are all alloy so I can't see the steel sandwich plate makeing a great deal of difference ?
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Location: Canberra
Registered: May 2002
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Re: W58 Forsale
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Fri, 27 September 2002 01:44

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if the ratios in the W58 are better spaced, but you are worried that they are taller (ie: more speed, less acceleration in each gear) then why dont you just change to a more appropriate diff ratio of 3.9 or greater?
is it true that W58 has bigger bearings than W55??
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Location: gold coast
Registered: May 2002
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Re: W58 Forsale
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Fri, 27 September 2002 02:08

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The W58 has a Cast steel Selector detent plate. This also happens to house the 2 races that hold together (or hold apart) the cluster from the main input and output shaft. Less deflection in the steel mean more consistent contact for the gears when engaged.
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I supported Toymods
Location: Perth
Registered: May 2002
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Re: W58 Forsale
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Fri, 27 September 2002 02:18

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toyman75,
The castings are all alloy yes, they all weigh pretty much dead on the same weight. The steel sandwich plate may not seem like a big difference but as far as I have been told, its the only difference between them (apart from ratios), and apparently the W58 is the strongest out of the three.
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Location: gold coast
Registered: May 2002
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Re: W58 Forsale
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Fri, 27 September 2002 02:19

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Bearing sizes pfff. The difference would be marginal if at all.
It is all about a helically cut gearboxes tendancy to self destruct. To reduce noise, designers reduced strength.
The Helix of the gears turn a pure rotational movement into a longitudinal thrust. i.e. forcing the gearbox apart.
This is why a 1:1 4th gear is the strongest and quietest gear. It is pure rotation. The Input shaft is engaged to the output shaft.
BTW:AE86 Levin Melbourne. Is this the 3sgte AE86??? If so a 3sgte should be pulling like a train at 5000 RPM in second??
If it is running a stock computer check that the knock sensor is rigged up. Most factory ECU's retard ign timing badly if the knock sensor is not hooked up.
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Location: On your mum!
Registered: May 2002
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Re: W58 Forsale
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Fri, 27 September 2002 03:02

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IF the W58 is good. I am interested in swapping you.
Regards
Jason
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Location: Melbourne
Registered: May 2002
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Re: W58 Forsale
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Fri, 27 September 2002 04:27
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Pete...nah, it's not a 3SGTE, it's a 3SGE....
that's why....I think I will just make a 4.7 rear diff...
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