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Re: Piston Failure: What would cause this? [Re: MadMopars] #2183265 10/26/16 09:31 PM 10/26/16 09:31 PM
Joined: Jan 2005 Posts: 2,540 Milwaukee WI T TRENDZ master
TRENDZ master T Joined: Jan 2005 Posts: 2,540 Milwaukee WI	Good stuff. Read..... http://www.contactmagazine.com/Issue54/EngineBasics.html "use it 'till it breaks, replace as needed"

Re: Piston Failure: What would cause this? [Re: TRENDZ] #2183877 10/27/16 04:44 PM 10/27/16 04:44 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	Top of piston marking = detonation, which also broke off the part of the piston which then bounced around making more dents. The black marks on the side of the piston occurred during the failure and have been called "black death". R.

Re: Piston Failure: What would cause this? [Re: JohnRR] #2184081 10/27/16 09:03 PM 10/27/16 09:03 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	Originally Posted By JohnRR Originally Posted By BradH 1 cylinder or 2? Air cooled or liquid? Fuel used? 2-stroke oil used? Mixing ratio? Ignition setting / timing? Operating conditions? How long on that piston & rings? Iron (boreable) or Nikasil bore? Didn't burn a hole through the piston crown, but the heat sure toasted the ring land... and the skirt is just plain ugly. Quote: This piston is from a single cylinder, air cooled, 4 stroke quad. Sh!t, like I got time to read the whole post? Hmmm... yup, run hard and put away broke. Glad it's not mine.

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