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Registered
Join Date: Oct 2001
Location: Westford, MA USA
Posts: 8,861
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Good point Tim -- my S-pistoned 2.0 has about the least optimal combustion chamber shape of the 911 family. Although if I can get my '69 to run at 9.9:1 without pinging, you should be able to do it on a 2.2 or later with some margin.
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John
'69 911E
"It's a poor craftsman who blames their tools" -- Unknown
"Any suspension -- no matter how poorly designed -- can be made to work reasonably well if you just stop it from moving." -- Colin Chapman
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