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Old 06-28-2006, 10:28 PM   #1
bugeyes
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Join Date: Jun 2004
Location: Australia
Vehicle:
2001 V7 sti

Default Anyone know OEM 2.5 sti piston ring thickness?

Can anyone post what ring thickness the sti 2.5 uses. Need info for 1st, 2nd and oil groove.
Thanks
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Old 06-29-2006, 11:43 AM   #2
Crawford/I-Speed
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Chapter/Region: SCIC
Location: Oceanside, CA
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1.2mm-1.2mm-2.0mm will be the thickness on the 2.5 STI rings
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Old 06-29-2006, 01:22 PM   #3
TheMadScientist
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2005 Big red

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Top ring= 1.19mm
second ring= 1.18mm
oil ring= 1.93mm

Measured with a Mitutoyo CD-6"C Digtal caliper.

TMS
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Old 06-29-2006, 01:37 PM   #4
TheMadScientist
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Forgot to add that the measurement was 180* away from the ring gap and the rings have 23k miles on them.

TMS
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Old 06-30-2006, 11:14 AM   #5
bugeyes
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Thankyou all.
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