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SDPC Announces GMPP's New CNC L92 Assemblies!!

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Old 10-28-2007, 02:53 PM
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Anyone flowed em on a 4" bore yet?
Old 10-28-2007, 09:46 PM
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Waiting on flow #'s before I'll order any from SDPC
Old 12-29-2007, 12:39 PM
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Originally Posted by Matt @ SDPC
Combustion Chamber 70cc*


Milling Information for Combustion Chamber Sizing
  • Approximately 0.006” per 1-cc
For 68-cc Chamber Remove 0.012”
For 65-cc Chamber Remove 0.030”
just for a second if ya dont mind!
Matt..... you said 6 thousandths per 1-cc....... I just got my heads back from repair, and to remove some of the pits caused by the plug, we milled em 3 thousandths... how much compression effect is that man? I was at 11.25:1 or so before.

Here are pics of what was left after the repair:








and before:





Last edited by WizeAss; 12-29-2007 at 12:47 PM.



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