High Compression Ratio ----> Detonation

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High Compression Ratio ----> Detonation

10-14-2007, 03:46 AM

Post: #13

apardal Offline

Senior Member

Posts: 512
Joined: Jan 2005
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The range of CR that Wiseco states for their pistons has to do with head skimming (combustion chamber volume)! 10.2 for stock head with 39cc's. 11.8 for combustion chamber with 35cc's. I measured my combustion which is around 34-34.5cc's.

Robokill, I have detonation with 0º BTDC... imagine if I tune it to 10 or 15º BTDC... that is a BOOOMM for sure.

Compression ratio calculation is not a problem. I'm sure I run 12.05:1 given every single characteristic of my setup.

ECU is a problem which I hope I can get around. If not, a MSnS will be on its way.

Bigger cams will also be in my thoughts.

Thank you for your replies.

Best regards

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Messages In This Thread

High Compression Ratio ----> Detonation - apardal - 10-12-2007, 10:46 AM

[] - dikolotour - 10-12-2007, 11:36 AM

[] - NoHachi - 10-12-2007, 01:51 PM

[] - apardal - 10-12-2007, 01:55 PM

[] - Eircamae86 - 10-12-2007, 03:11 PM

[] - NoHachi - 10-12-2007, 04:26 PM

[] - Ivan141 - 10-12-2007, 05:57 PM

[] - apardal - 10-12-2007, 09:44 PM

[] - oldeskewltoy - 10-12-2007, 10:33 PM

[] - NoHachi - 10-12-2007, 11:29 PM

[] - robokill - 10-12-2007, 11:43 PM

[] - oldeskewltoy - 10-13-2007, 01:24 AM

[] - apardal - 10-14-2007 03:46 AM

[] - NoHachi - 10-14-2007, 10:05 AM

[] - apardal - 10-14-2007, 02:25 PM

[] - jamiemirror - 10-16-2007, 09:21 PM

[] - robokill - 10-16-2007, 09:44 PM

[] - Ivan141 - 10-16-2007, 10:17 PM

[] - Lipinhu - 10-16-2007, 11:11 PM

[] - apardal - 10-16-2007, 11:21 PM

[] - oldeskewltoy - 10-17-2007, 06:07 PM

[] - apardal - 10-17-2007, 08:00 PM

[] - apardal - 10-17-2007, 11:23 PM

[] - Uzelac - 03-23-2009, 05:35 PM

[] - irishtwincam - 03-23-2009, 05:50 PM

[] - oldeskewltoy - 03-23-2009, 10:25 PM

[] - jondee86 - 03-24-2009, 03:49 AM

[] - irishtwincam - 03-24-2009, 11:27 AM

[] - totta Crolla - 03-24-2009, 11:20 PM

[] - totta Crolla - 03-24-2009, 11:26 PM

[] - GTRJazz - 03-26-2009, 12:57 AM

[] - jondee86 - 03-26-2009, 06:24 AM

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