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Used 440 crank specs? #842395 10/30/10 10:18 PM 10/30/10 10:18 PM
Joined: Sep 2005 Posts: 1,202 California P polkat OP mopar addict
polkat OP mopar addict P Joined: Sep 2005 Posts: 1,202 California	What is considered allowable taper and out-of-round on 440 crank journals? I think I read somewhere it is .001" for each, but I can't find that now, and that number sounds a tad large to me. Thanks!

Re: Used 440 crank specs? [Re: polkat] #842396 10/31/10 01:16 AM 10/31/10 01:16 AM
Joined: May 2007 Posts: 1,443 Maryland D Dads426 pro stock
Dads426 pro stock D Joined: May 2007 Posts: 1,443 Maryland	Mains & Rods-Maximum out of round and/or taper: 0.001" from the '68 service manual. 2012 422 Allstars NSS Champion 2013 422 Allstars NSS Champion 2014 422 Allstars NSS Champion

Re: Used 440 crank specs? [Re: Dads426] #842397 10/31/10 01:18 AM 10/31/10 01:18 AM
Joined: Sep 2005 Posts: 1,202 California P polkat OP mopar addict
polkat OP mopar addict P Joined: Sep 2005 Posts: 1,202 California	Humm...guess that's right then. Okay, thanks!

Re: Used 440 crank specs? [Re: polkat] #842398 10/31/10 01:57 AM 10/31/10 01:57 AM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	that figure'd be allowable for a stocker but not for a perf app. Not sure what the allowable is but it'd very likely be less than .001" live every 24 hour block of time like it's your last day on earth

Re: Used 440 crank specs? [Re: RapidRobert] #842399 10/31/10 03:16 AM 10/31/10 03:16 AM
Joined: Sep 2005 Posts: 1,202 California P polkat OP mopar addict
polkat OP mopar addict P Joined: Sep 2005 Posts: 1,202 California	Yea, I was thinking it would be more like .0005", or somewhere in that neighborhood. Sound right?

Re: Used 440 crank specs? [Re: polkat] #842400 10/31/10 03:32 AM 10/31/10 03:32 AM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	yes it does live every 24 hour block of time like it's your last day on earth

Re: Used 440 crank specs? [Re: polkat] #842401 10/31/10 05:09 AM 10/31/10 05:09 AM
Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O 70Cuda383 Too Many Posts
70Cuda383 Too Many Posts Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O	how much bearing clearance do you plan on? if you're clearances are tight, say, .0025, and you're out of round by .001, then you could see clearances as tight as .0015 on the mains... Photobucket sucks

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