Subject	If it needs a grind, just go with a good condition original
Posted by	ZinnZ32 on April 03, 2013 at 12:19 PM
	This message has been viewed 282 times.
In Reply To	Curious if a crank is salvageable posted by BlackholeZ on April 02, 2013 at 11:39 AM
Message	You can polish an original Nitrided Crank and still retain the integrity of the nitride layer, as the coating penetrates into the metal a bit. VG's need to be built with a 'solid foundation', ie: a nice bottom end with a good, straight, original nitrided, and polished crank. Make sure your main, and rod clearances are consistent as possible, a little looser is even ok for big power. Use patience with plasti-gauges, as they take a bit of time to get the hang of using effectively. You need every bit of precision you can get out of a home garage/plastigauge measurement technique, as new power thresholds with bigger turbos and breather mods put a lot of strain on the bearings! __________ Version 3.01
Follow Ups	Curious if a crank is salvageable - BlackholeZ 11:39:24 04/02/13 The way I tell - Cjw3 15:45:46 04/02/13 If you have the crank ground, it will need to be re-nitrided (n/m) - ttsmokin 16:48:57 04/02/13 and at that point I would just find another crank. (n/m) - BlackholeZ 17:00:11 04/02/13 It's really hard to detect anything - BlackholeZ 19:11:46 04/02/13 +1 would any of you engine builders out there - Zvil (FL) 19:32:32 04/02/13 Re: Curious if a crank is salvageable - Tech@EPR 19:55:39 04/02/13 Is polishing considered reconditioning? - BlackholeZ 21:04:24 04/02/13 Re: Is polishing considered reconditioning? - Tech@EPR 17:28:07 04/03/13 If it needs a grind, just go with a good condition original - ZinnZ32 12:19:03 04/03/13 Not going for big power, want reliable, and smooth - BlackholeZ 04:00:52 04/04/13 looks like it'd be fine after a grind and oversize bearings. (n/m) - nemo1080 (Iowa) 12:47:41 04/03/13 I wouldn't ever grind an OEM crank... - ZinnZ32 13:52:23 04/03/13 Re: I wouldn't ever grind an OEM crank... - Tech@EPR 17:29:44 04/03/13 I think Zinn was meaning not to grind without re-nitriding - ttsmokin 19:59:05 04/03/13 Is it even worth it though to go through all that? - BlackholeZ 04:04:10 04/04/13 +1 Pretty sure getting one Nitrided isn't easy or cheap... (n/m) - ZinnZ32 12:37:47 04/04/13 Re: +1 Pretty sure getting one Nitrided isn't easy or cheap... - Tech@EPR 13:44:39 04/04/13 Looking around it's a couple hundred bucks. (n/m) - BlackholeZ 01:43:50 04/05/13
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