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KobaltBlau KobaltBlau is offline
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Join Date: Mar 2004
Location: City of Seattle, WA
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Here are some 9.3:1 3.0 CIS pistons (look, they have a bigger flat spot for valve clearance):

And here are some pistons identified by Henry Schmidt as being 2.7 8.5:1 CIS pistons:

Now, I am quite sure that this (posted above) is a CIS piston:

however, the dome looks bigger than on the pistons identified by Henry as 2.7 8.5:1 CIS. I do not know whether 2.7 CIS pistons were made in different compression ratios. The original ad with this photo claimed they were 2.7 CIS pistons, but didn't state a CR.
Old 09-02-2004, 11:52 PM
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