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Old 01-15-2005, 02:10 AM   #1
Scooby Newbie
Member#: 72588
Join Date: Oct 2004
Default is OEM STI piston rings strong enough??

Just a quick question that is USDM sti OEM piston rings strong enough to take abuse as high as 1.8-2.0 bar?? i am using CP pistons with OEM rings now & about to tune very soon, so i am looking for your answer, thanks!!
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Old 01-15-2005, 10:01 AM   #2
Scooby Newbie
Member#: 73087
Join Date: Oct 2004
Location: baltimore
2002 wrx


Most OEM rings are very strong. They are usually (& should be) forged chrome-moly which is the strongest material used to date for rings, as opposed to cast iron rings.
The lands on the pistons are often the weak point but CP makes a great piston.
I would use the same set up if it were me, you should be totally fine.
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Old 01-15-2005, 12:17 PM   #3
Tuning Factory Inc.
Member#: 3600
Join Date: Jan 2001
Location: Detroit, Michigan, USA

Should be no problem although boost pressure doesn't harm rings or pistons, it is usually detonation you have to worry about. Also you'll need a huge turbo to be efficient at those boost levels. Most of the time people think boost pressure is the limiting factor but in actuality it really is not important. Most of those folks will find that they will yield better results and more power from taking it easy with the boost and keeping the turbo in it's efficient range.
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