Subject	His crank isnt the first ive seen break. Ill be willing to
Posted by	z324u on April 21, 2009 at 1:22 AM
	This message has been viewed 683 times.
In Reply To	some history that may have attributed to the 1009rwhp.. posted by TURBOGAGE(MATTZ Garage) on April 20, 2009 at 11:43 PM
Message	bet it broke right at the main joint between cyl 1-2 and 3-4. Like this I have seen/heard of 3 different cranks break in the same exact spot, and that is just around here. My crank broke in that spot about halfway through 2nd gear on a 1/4 mile pass. I was making around 780whp through a th400 at the time, and im willing to bet it was actually putting alot more down at the track. All the bearings were fine, and no signs of detonation or any abnormality. The crank just broke from what appears to be shear force. I cant complain though that crank had alot of miles and hundreds of passes in the 10s and 9s on it. 9.46@142 1.37 60ft
Follow Ups	some history that may have attributed to the 1009rwhp.. - TURBOGAGE(MATTZ Garage) 23:43:47 04/20/09 Off topic, but any pics of your splitter installed? (n/m) - ShakaShaun(Denver) 00:00:07 04/21/09 see here... - TURBOGAGE(MATTZ Garage) 01:15:19 04/21/09 That crank was probably bad from the start. - NytWolf 00:05:52 04/21/09 Re: That crank was probably bad from the start. - Tech@EPR 00:48:10 04/21/09 true... but... - TURBOGAGE(MATTZ Garage) 01:35:11 04/21/09 Re: true... but... - Tech@EPR 01:51:30 04/21/09 Matt, what shop did you use? (n/m) - NytWolf 10:53:39 04/21/09 His crank isnt the first ive seen break. Ill be willing to - z324u 01:22:44 04/21/09 Can you post close-up pictures of the fracture surface? - CaliguyPurdue (redesigning) 04:12:52 04/21/09 Wow. (n/m) - BradZ (UF) 08:10:30 04/21/09 I see you are running an UR pulley as well - aliaZ 08:41:48 04/21/09 x2. I am definitely now sold on the ATI Street Dampener. (n/m) - MixManMash 11:32:18 04/21/09 It definately would be a good idea, but from what ive seen - z324u 12:31:50 04/21/09 torsion on the crank would be cumulative - aliaZ 13:11:22 04/21/09 Yea lets get that baby in a SEM ASAP (n/m) - CaliguyPurdue (redesigning) 13:20:18 04/21/09 i dont have the crank anymore, but i believe russel@z1 does. - z324u 14:28:46 04/21/09 Re: It definately would be a good idea, but from what ive seen - Tech@EPR 17:34:29 04/21/09 I'm not aware of anyone that actually machines the journals - aliaZ 22:35:16 04/21/09 Doesn't SZ do this? (n/m) - The Hawk 23:22:58 04/21/09 not in the manner Tech is describing (n/m) - aliaZ 06:58:17 04/22/09 I saw old posts about crank failures and the lack of a - Yoshi 15:37:53 04/21/09 That is some serious carnage there. :( - spotz 10:10:36 04/21/09 Have you thought of getting any cryo treating done to it? (n/m) - KongZTT GT28RS MD 10:15:53 04/22/09 Sorry but what is a "cam carriers"? (n/m) - ZXRider(SoCal) 02:54:46 04/21/09 bearing caps that secure the cam to the head (n/m) - aliaZ 08:37:06 04/21/09 Thank you. (n/m) - ZXRider(SoCal) 09:00:17 04/21/09 I find it hard to believe that the bearings looked good - ztunerz 10:12:09 04/21/09 My bearings looked brand new, and my crank broke. - z324u 12:39:56 04/21/09 I would speculate that the problem is more with..... - canyoncarver 08:54:23 04/22/09
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