Subject	I would agree if the hot spots were all-around
Posted by	canyoncarver on December 30, 2009 at 2:41 PM
	This message has been viewed 308 times.
In Reply To	Re: I still say it was twisting like a wet noodle posted by Tech@EPR on December 30, 2009 at 01:06 PM
Message	but those marks look to be from a flexing / bending motion. From the burnishing marks, it looks like the crack started where circled in red. The heat from the thrust loading that you can see may have contributed to the crack. Then the crack expanded to the area circled in green, making it some more revolutions, observed by the lighter burnishing, before fully fracturing in the yellow area. I'm going with a custom set of JE pistons
Follow Ups	Which piston is the best : Ross or CP ? - Dark Diver 16:20:13 12/29/09 read me first! - Seb@Specialty-Z 19:10:49 12/29/09 Re: read me first! - ZXoltan 19:49:41 12/29/09 depends on your definition of "street machine" - aliaZ 22:55:07 12/29/09 Wow, I went with the JE Pistons - ubermiach 21:53:44 12/29/09 Hi Seb, glad to see you back here, in good health I hope :-) - Dark Diver 05:30:37 12/30/09 I personally don't know enough about the CPs - Seb@Specialty-Z 12:39:02 12/30/09 Re: Which piston is the best : Ross or CP ? - Tech@EPR 20:04:33 12/29/09 Piston coatings - ZXoltan 20:10:18 12/29/09 Re: Piston coatings - Tech@EPR 20:14:03 12/29/09 have you had an opportunity to tear down an engine - aliaZ 22:48:37 12/29/09 Re: have you had an opportunity to tear down an engine - Tech@EPR 23:42:11 12/29/09 oh? What are you doing to ensure his crank doesn't break - aliaZ 07:57:39 12/30/09 Re: oh? What are you doing to ensure his crank doesn't break - Tech@EPR 08:24:51 12/30/09 how do you suppose that the hairline crack originated - aliaZ 09:23:21 12/30/09 Re: how do you suppose that the hairline crack originated - Tech@EPR 11:13:14 12/30/09 I still say it was twisting like a wet noodle - canyoncarver 13:02:38 12/30/09 Re: I still say it was twisting like a wet noodle - Tech@EPR 13:06:55 12/30/09 I would agree if the hot spots were all-around - canyoncarver 14:41:54 12/30/09 in what manner did the previous build fail? - aliaZ 17:05:53 12/30/09 Re: in what manner did the previous build fail? - Tech@EPR 10:27:11 12/31/09 do you have any close up pics of the crank fracture? (n/m) - aliaZ 09:24:26 12/30/09 Re: do you have any close up pics of the crank fracture? - Tech@EPR 11:11:22 12/30/09 Beach marks! (n/m) - CaliguyPurdue (Selin Design) 14:23:13 12/30/09 yep (n/m) - aliaZ 15:10:57 12/30/09 interesting - aliaZ 22:52:41 12/29/09 Re: interesting - Tech@EPR 23:39:47 12/29/09 hmm - aliaZ 08:09:34 12/30/09 also - aliaZ 08:13:13 12/30/09 Re: also - Tech@EPR 08:20:41 12/30/09 I'm not talking about the hole under the piston crown - aliaZ 09:26:00 12/30/09 Re: I'm not talking about the hole under the piston crown - Tech@EPR 11:14:05 12/30/09 OEM is not a press fit after the piston - aliaZ 12:14:22 12/30/09 Re: OEM is not a press fit after the piston - Tech@EPR 12:53:58 12/30/09 Re: hmm - Tech@EPR 08:17:48 12/30/09 Re: Re: hmm - aliaZ 10:35:26 12/30/09 Re: Re: Re: hmm - Tech@EPR 11:05:05 12/30/09 FWIW - aliaZ 15:16:38 12/30/09 Re: FWIW - Tech@EPR 00:20:05 12/31/09 whatever - aliaZ 09:31:42 12/31/09 Re: whatever - Tech@EPR 10:31:49 12/31/09 hi - aliaZ 23:10:06 01/01/10 Re: hi - Tech@EPR 18:36:45 01/02/10 where is your shop? - aliaZ 16:51:24 01/04/10 Re: interesting - Tech@EPR 11:30:47 12/30/09 thanks! - aliaZ 12:34:32 12/30/09 Re: thanks! - Tech@EPR 13:04:47 12/30/09 I have CP's, I haven't noticed any noise. (n/m) - RSR 14:33:11 12/30/09 But I've got zoomies, runnin' out the hood. Is that wrong? (n/m) - RSR 10:18:36 12/31/09 Thank you for your detailed response. - Dark Diver 05:56:57 12/30/09 Re: Thank you for your detailed response. - Tech@EPR 08:30:08 12/30/09 Wiseco. - Ash's Z 12:43:32 12/30/09 No other advantage with CP/JE/Ross vs Wiseco ? - Dark Diver 18:33:58 12/30/09
Post a Followup	You cannot reply to this message because you are not logged in.