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Best mod yet! S2 ring and pinion

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Old 10-15-2005, 03:36 PM
  #31  
ehall
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^^^^^ But yours is so entertaining...lol
Old 10-15-2005, 04:25 PM
  #32  
Thom
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Is it because the R&P of the S2 is stronger than the S's that S2 transmission bearings get much louder than S's ?
Old 10-15-2005, 07:21 PM
  #33  
Mike B
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Do these things just drop out of the sky? Wondering where I would find these parts...thanks.
Old 10-15-2005, 07:29 PM
  #34  
special tool
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Good luck.
It is better to install the S2 R&P into the 951 box because the 951 5th is not as high as the S2 5th gear.
You can get away with installing the whole S2 trans into your car, however (like me).
Old 10-15-2005, 08:17 PM
  #35  
SoloRacer
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Mike,

I'm thinking you would have to get them from the dealer or from a used source. Any other vendors would have to do the same as you since to my knowledge only Porsche makes the parts (unlike clutches that can be bought from several sources.)

P.S. When are you going to come over for a beer?
Old 10-15-2005, 10:23 PM
  #36  
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Whoa I was wondering why this had never come up, old news.

I am planning to hold out for the 6 speed anyway, but glad to get the info, despite the heat

Rod
Old 10-16-2005, 12:36 AM
  #37  
Jaak Lepson
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How would a 968 transaxle fit in a 86 951? Any issues?
Old 10-16-2005, 12:55 AM
  #38  
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Originally Posted by Jaak Lepson
How would a 968 transaxle fit in a 86 951? Any issues?
Axles, linkage, shift rod, mount needs to be changed. You will also need to fab up a speedo since the 968 gets it's signal from the abs sensor in a front wheel and the 944s get it from the transaxle.
Old 10-16-2005, 06:31 AM
  #39  
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Ok, what exactly is the Ring & Pinion? i have a 951S so would it be a gain for me to upgrade? im not familiar with transmissions at all, but i want to learn! thanks!

-Darwin
Old 10-16-2005, 08:16 AM
  #40  
special tool
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The S2 trans will move the overall torque band of the car down lower but you will lose top end.
You will be faster up to 100 but slower after that.
Old 10-16-2005, 12:52 PM
  #41  
lleroyb
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ST, what is your rpm at 70, in fifth?
Lou
Old 10-16-2005, 01:57 PM
  #42  
special tool
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about 2850
Old 10-16-2005, 01:58 PM
  #43  
TurboTommy
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Gearing, really, is a personal preference thing.
However, must of us doing engine mods for more hp, do it via an increase in torque (more boost).
Generally, more engine torque warrants TALLER gearing, not shorter.
I guess if you live in bigger centers (lots of traffic, not too many open roads, etc.), or you leave your engine basically stock (power wise), then a shorter R&P might enhance performance.
For me, I actually went taller than stock. Otherwise, there was a feeling that first gear was kinda useless, and a general feeling that I was running out of revs far too early.
Old 10-16-2005, 02:03 PM
  #44  
special tool
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This is true - this why an E30 M3 has 4.1:1 R&P and a 951 has 3.37:1

The more top end you have the lower the R&P gearing you want.
Old 10-16-2005, 02:19 PM
  #45  
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Originally Posted by special tool
about 2850
What?


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