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Old 09-18-2020, 12:05 AM   #1
Scooby Newbie
Member#: 379271
Join Date: Jan 2014
Default rear thrust bearing clearance

So I'm a little confused with what to aim for on the rear main thrust bearing clearance....subaru factory manual says 0.030-0.115mm ?
Online On eveyones build they aim for 0.012-0.015mm including the rear thrust...

Why dont people open it up at least to 0.030mm rear thrust clearance?
Is it ideal to aim for 0.045mm ?

0.033mm is about the size of a human hair...so having that tight clearance at the back where the heavy flywheel and clutch engages on heavy load could have a bit of premature wear ? Can't be too much wear because its not a common thing for rear thrust bearings to spin or wear out?
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Last edited by whiterabbitrexy; 09-20-2020 at 09:43 PM.
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Old 09-18-2020, 08:19 AM   #2
Elbert Bass
Scooby Specialist
Member#: 283429
Join Date: May 2011
Chapter/Region: South East
Location: Down yonder.
2016 Fuji Sunfire 03


My guess is someone is reading/interpreting specifications wrong. Quoting inches and dropping a zero (fatal mistake) Although Subaru is designed and built in metric very few techs actually use metric measuring gear.
like you said - the spec is: 0.030mm to 0.115 mm (0.0012" to 0.0045")
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