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July 24th, 2012, 05:40 PM
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ninjette.org certified postwhore
Name: D
Location: Palm Beach, FL
Join Date: Oct 2010 Motorcycle(s): 2006 Ninja 250R, 2007 EFI Ninja 250R Posts: A lot.
Blog Entries: 1
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Are the newgen and pregen cranks the same?
Kawasaki is making things pretty difficult when it comes to cranks. They list different part numbers numbers for the pregens and newgens:
Years / part number / price 1988-2005 = 13031-1247 = $533 2006-2007 = 13031-0013 = $416 2008 = 13031-0112 = $437 2009-2010 = 13031-0120 = $437 From what I can tell, its a safe bet that the pregen cranks are interchangeable, but what about with the newgen cranks? Below are two photos of cranks. The Kawasaki specs say they use the same bearings and have the same size journals, but why do they have different part numbers? Pregen Crank Newgen Crank Anybody know what the difference is?
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July 26th, 2012, 12:07 PM
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#2 |
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ninjette.org certified postwhore
Name: .
Location: .
Join Date: Feb 2011 Motorcycle(s): . Posts: Too much.
MOTM - Feb '13, Feb '14
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Sort of related here: are the cams from the 86-87 bike interchangeable? I know those had more top end and a cam swap is easy
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July 26th, 2012, 12:27 PM
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#3 |
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wat
Name: wat
Location: tustin/long beach
Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much.
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MOTM - Oct '12, Feb '14
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dont know the difference but when you change to a new crank make sure you do a squish check on the clearance between the bearings you put in and the crank surface... they are matched to each other with pretty tight tolerance. i forget what its called but they make these little ink strip things that squish when you assemble it. if its too tight of a squish you have to get smaller (or maybe bigger depending) bearings surfaces or something
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