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2.7 Carrera pistons 2nd Thread.
Dear Team, what are the correct tolerances & values for this pistons. Who knows whats wrong here.
See as well the aftermarket piston.  
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06-02-2007, 10:42 PM
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  Why is the Aftermarket piston 89.98 There should not be that value. |
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06-02-2007, 10:46 PM
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What is it you are trying to determine? You have the measurement of the pistons. They seem to show up (at least very close) on your charts and a "2" for the Carrera RS chart. They also are the same size as the "1" on the 74-77 chart but so what. They are clearly 73 RS pistons. If you look at CIS pistons you'll see the difference.
-Andy
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72 Carrera RS replica, Spec 911 racer |
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06-03-2007, 04:07 PM
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There should not be a 73 Carrara 2.7 piston with 89.98 according porsche charts.
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06-03-2007, 09:55 PM
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You're right the number is 89.975 for the maximum on the "2" size. That is what I mean't by "at least very close" in my post. You are looking at a .005mm difference.
Are you trying to use these? Are you trying to replace them? Are you trying to buy new cylinders? What are you trying to accomplish? -Andy
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72 Carrera RS replica, Spec 911 racer |
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06-05-2007, 01:46 PM
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