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Old 01-02-2022, 11:57 AM   #26
Scargod
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Member#: 260314
Join Date: Oct 2010
Chapter/Region: NESIC
Location: S central CT, New England
Vehicle:
2007 STI
silver gray metallic

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I would go with the 1.25, per the 6MT manual. My 2008 STI FSM agrees.
The "1.75" I've seen, but I believe that is for the 5MT.
The difference in the two preloads is .00183" IF the threads of the ring are 1.5mm. I did not easily have a transmission to measure the threads per mm when I wrote this.
I think that's a significant preload to get wrong.
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Old 01-03-2022, 09:37 AM   #27
JarHarms
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Join Date: Jan 2007
Location: apparently I "spread the hate"
Vehicle:
2006 WRX, 6MT, 5x114

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The most recent 2015my and 2007my FSMs I have for a 6MT (TY85 non-split case) also lists 1.25 tooth pre-load. That is the spec I would use in your case.

As for the 1.75 -vs- 1.25 earlier in this thread; I am not certain if this difference was due to earlier FSM spec being 1.75 or some other reason.

Last edited by JarHarms; 01-04-2022 at 03:57 PM. Reason: (sp)
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Old 01-04-2022, 05:41 AM   #28
Shaneil
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Join Date: May 2006
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Cheers guys appreciate the input, yeah I just checked mine and it appears the the factory set mine at 1.75?
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