Is this detonation?

This topic has 5 replies, 4 voices, and was last updated 12 years, 6 months ago by James O’Brien.

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- March 17, 2014 at 10:57 am #23983
  
  Britt Robinson
  Participant
  
  I took the head off my modified Honda and found that there is heavy pitting on the cylinder body between the bore and the o-ring, and similar conditions on the head. My initial reaction was corrosion from the cooling system. But then I realized it is all contained in the combustion chamber. These are the best photos I have right now…
- March 17, 2014 at 11:03 am #23985
  
  Matt Dixon
  Participant
  
  Yes it is…
- March 17, 2014 at 2:35 pm #24000
  
  Greg Lindahl
  Participant
  
  Very much so.
  
  Check squish.
  
  Check fuel quality.
  
  Check timing.
  
  Check cc’s.
  
  Check for anything creating lean condition (air leak/carb settings).
- April 5, 2014 at 9:16 pm #25118
  
  James O’Brien
  Participant
  
  Yes, most common reason is timing curve. Unless you have some bad or low octane fuel.
  - April 8, 2014 at 2:31 pm #25296
    
    Britt Robinson
    Participant
    
    James! I should’ve bought your cylinder and cylinder head when I had the chance. I snoozed AND lost on that one…
- April 8, 2014 at 7:43 pm #25312
  
  James O’Brien
  Participant
  
  There might still be one on eBay Britt if you haven’t figured anything out, It’s a 99 CKT mod. I think he wanted 300. Looked like it was in good shape. I have another, but it’s my championship setup from last year at SRK. So I would want a brick of gold for it ;)
  
  I’ll be up there Friday to run with you guys.
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