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| Registered User Join Date: Jun 2012 Location: UK 
					Posts: 68
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				Which piston rings
			 
			Not sure which rings to get for my 911sc. It's a 204bhp european model, late 1980. My local supplier has two options, 1974-1980 93010396300/1 1981-1989 93010398600/1 So that would probably put me with the first rings. Pelican suggest 1974-1979 93010396300/1 1980-1983 93010398600/1 Which would suggest the second rings. Any way of me telling before I order ? Thanks | ||
|  11-19-2012, 06:15 AM | 
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| Registered Join Date: Apr 2010 Location: Houston, Tx 
					Posts: 951
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			Do a search, there should be plenty of information, then ask the question.   There is a post 2 down from yours where Steve Weiner (reputable engine builder) recommends Goetz brand rings. You should probably buy them as a set unless you have some special requirements. 
				__________________ "Simplicity is supreme excellence" - James Watt | ||
|  11-19-2012, 07:59 AM | 
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| Registered Join Date: Oct 2008 Location: Nash County, NC. 
					Posts: 8,522
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			the ring spec is in mm, measure them so you know.  Pistons will be Mahle and inside the pistons there is a discription 2 numbers, a letter and 2 numbers.  The numbers are a discription of the piston.  PP would know the rings for the piston. Bruce | ||
|  11-19-2012, 09:19 AM | 
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| Registered User Join Date: Jun 2012 Location: UK 
					Posts: 68
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			Thanks, did try some searching, but couldn't find which ones I need. The two numbers are for Goetz rings as they seem to be the ones to go for. Just had a look and the numbers in the Mahle pistons are 95L70 ++ C021 | ||
|  11-19-2012, 01:36 PM | 
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| Registered Join Date: Jan 2009 Location: Reno, NV 
					Posts: 180
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			You have the pistons out so all you need to do is measure the oil control ring thickness: 930 103 963 00=4.0mm oil control 930 103 986 00=3.5mm oil control The top rings are the same in both ring sets. I would be willing to bet you need the later part number with the thinner oil control ring.   
				__________________ Don Weaver-EBS Racing don@ebsracing.com 2006 Cayman S '86 944T '00 Boxster with EBS Racing 3.4 liter engine | ||
|  11-19-2012, 04:21 PM | 
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