canadamaxxer
Pro
Posts: 1090
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posted February 27, 2005 10:13 AM
What is the physical difference between the 1st gen and 2nd gen crankshaft?
I have a core sitting in a box on a shelf and want to make sure that it is the right one for my 1st gen (A model) bike. Is there a part # stamping that is different? I think I remember JC mentioning the width of the starter gear is different....
Any info is appreciated...
  
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted February 27, 2005 10:56 AM
The counterweighting is different . The B is heavier and has greater rotating mass. The primary gear and starter drive is the same. You should match the rod bearings to the generation of the crank.
Doug
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wilson1
Expert Class
Posts: 345
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posted February 27, 2005 10:58 AM
i beleive its the weight it is supposed to be 4 lbs heaver i saw in another post some one put in 2002 crank in a 2000
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canadamaxxer
Pro
Posts: 1090
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posted February 27, 2005 10:58 AM
quote:
The counterweighting is different . The B is heavier and has greater rotating mass. The primary gear and starter drive is the same. You should match the rod bearings to the generation of the crank.
Doug
Doug,
I'm not sure I know what you mean about matching the bearings.
Also...
Considering that all I have is a crank in a box....and nothing to compare it to, how can I tell if it's an A or B crank?
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ninja12
Needs a job
Posts: 3310
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posted February 27, 2005 06:50 PM
the different cranks use different bearings.
Going out on a limb. I believe it's the rods that
makes the difference. you must use A model bearing with carillo's
reguardless of crank.
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canadamaxxer
Pro
Posts: 1090
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posted February 27, 2005 08:25 PM
Ok, that solves that dilemma...I have Carrillo rods.
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted February 27, 2005 09:20 PM
THe B rods abd B bearings have different part #'s, which suggests a difference. I think I figured it ouut once but I forgaot what it is. I know we alwayse recommend to use the same bearings and rod years. The cranks are quite obviously different. There is a counterweight on the B that does not exist on the A. A fiche picture should show it.
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canadamaxxer
Pro
Posts: 1090
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posted February 27, 2005 10:02 PM
Doug,
I looked on kawasaki.com, found two different part #s for the A and B cranks (no surprise there), but the fiche picture is the same for both cranks. I took a look at the spare crank I have, and can't find any stamping #'s or casting marks that give any clues to the era of the part. If this is a weight issue, what is the weight of either era of crank?
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ZXLNT
Needs a job
Kawpuke Extraordinare
Posts: 2853
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posted February 27, 2005 10:45 PM
Maxxer I have a spare A2 model crank. If you want why dont we both post pictures to show the differences..
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canadamaxxer
Pro
Posts: 1090
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posted February 28, 2005 09:04 AM
 Edited By: canadamaxxer on 28 Feb 2005 09:06
Here are the pics of my mystery crankshaft:
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ZXLNT
Needs a job
Kawpuke Extraordinare
Posts: 2853
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posted February 28, 2005 09:17 AM
NIce rod Journal.
I'll get my pictures up here soon..
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canadamaxxer
Pro
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posted February 28, 2005 09:35 AM
You like that ,eh?? It should be just fine for a weld up stroker though...
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canadamaxxer
Pro
Posts: 1090
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posted February 28, 2005 09:42 AM
I just realized that this crank is another victim of the #3 rod bearing failures we've been hearing about.....for whatever reason this one failed. The other journals are virtually perfect.
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johnnycheese
Pro
Posts: 1008
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posted February 28, 2005 03:38 PM
just measure the with of the gears
____________
Builder and tuner of some of the fastest N.A. and P/A Hayabusas and ZX12 /14 in Texas
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canadamaxxer
Pro
Posts: 1090
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posted February 28, 2005 03:52 PM
The width of the starter drive gear is 12.89 mm
The width of the balancer drive gear is 18.81 mm
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johnnycheese
Pro
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posted March 01, 2005 07:52 AM
what year crank is that you measured?
____________
Builder and tuner of some of the fastest N.A. and P/A Hayabusas and ZX12 /14 in Texas
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canadamaxxer
Pro
Posts: 1090
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posted March 01, 2005 08:08 AM
quote:
what year crank is that you measured?
That is my question....I have no idea what year it is.....I was hoping you'd know.
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johnnycheese
Pro
Posts: 1008
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posted March 01, 2005 11:02 AM
I have an 00-01 here I will measure shortly.
I need someone who has an 02-04 to do the same
____________
Builder and tuner of some of the fastest N.A. and P/A Hayabusas and ZX12 /14 in Texas
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canadamaxxer
Pro
Posts: 1090
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posted March 01, 2005 01:48 PM
Thanks JC
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TurboBlew
Moderator
BUSY DOING THE SCHIAVO
Posts: 4590
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posted March 01, 2005 02:05 PM
I have an 02 crank I can measure when I get home..
____________
Official Charter Member of the RIDERS OF KAWASAKI MEMBERSHIP REVOCATION CLUB
Also a BadAss Internet Forum Moderator 4 Hire!! Come at me brah!
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TurboBlew
Moderator
BUSY DOING THE SCHIAVO
Posts: 4590
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posted March 01, 2005 03:52 PM
18.13 mm
23.55 mm
____________
Official Charter Member of the RIDERS OF KAWASAKI MEMBERSHIP REVOCATION CLUB
Also a BadAss Internet Forum Moderator 4 Hire!! Come at me brah!
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johnnycheese
Pro
Posts: 1008
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posted March 01, 2005 04:40 PM
there ya go I told you the gear was wider.
Now rather they fit and work is a different story, I was told by APE they would not fit, but I never tried
____________
Builder and tuner of some of the fastest N.A. and P/A Hayabusas and ZX12 /14 in Texas
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canadamaxxer
Pro
Posts: 1090
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posted March 01, 2005 05:15 PM
So I do have an "A" crankshaft!!! PHEW!!!!
Thanks for all of the effort guys.
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TurboBlew
Moderator
BUSY DOING THE SCHIAVO
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posted March 01, 2005 06:47 PM
Johnny... you got any good core A model cranks or strokers already done in stock?
____________
Official Charter Member of the RIDERS OF KAWASAKI MEMBERSHIP REVOCATION CLUB
Also a BadAss Internet Forum Moderator 4 Hire!! Come at me brah!
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ninja12
Needs a job
Posts: 3310
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posted March 01, 2005 09:05 PM
the one in the pic looks like an A model.
the gear next to #3 rod is much smaller on the A model and near same width on the B models.
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