08 crank in a 04???? - Kawasaki ZX-10R.net
 
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post #1 of 7 Old 12-15-2008, 09:52 AM Thread Starter
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08 crank in a 04????

just wondering if an 08 crank will drop into an 04...?.....it is suppose to be 2 lb lighter .
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post #2 of 7 Old 12-15-2008, 10:12 AM
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I dont think they will I think if you had an 06-07 it can. if anything get the crank lightened polished and balanced at falicon.... takes 2 lbs off and it gives it a nice oil cutting polish....
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post #3 of 7 Old 12-15-2008, 12:34 PM Thread Starter
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thanks garth for the quick response.iwasnt aware that the gen1 and gen 2 cranks are diffrent only the flywheel.oh well there goes that idea
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post #4 of 7 Old 12-15-2008, 05:49 PM
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I read somewhere that the 06/07 crank is 2lbs heavier than the 04/05.
That leaves the 08 crank weighing the same as the 04
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post #5 of 7 Old 12-15-2008, 05:52 PM
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ya know what I forgot about that, they did make the crank I think 7% heavier I read somewhere..... so i wonder if they weigh the same...
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post #6 of 7 Old 12-15-2008, 06:25 PM
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About close I think.
Anyway, the 08 crank weighs are repositioned giving the same inertial mass as the previous heavier 06/07 crank.
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post #7 of 7 Old 12-15-2008, 06:29 PM
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Yeah, the 06/07 cranks were made heavier to handle the torqe/power easier and not want to wheelie so much, then in 08 they made the crank lighter, but remained the same rotational inertia. I say make that shit as light as possible and let her scream...

It should be the same as in bigger motors, such as V8's. A heavier crank/flywheel makes a much broader spread of torque and power where a lighter one might make more peak power and a more inconsistent curve. Now I'm not sure that was necessarily the truth, because dyno graphs were compared with "supposedly" stock bikes and the 04's power curve was much more favorable. It does not mean that the 06/07 is any slower, makes less power, or is any less of a threat. Just helps keep the wheel down and in certain instances will make the bike faster. All in the nature of a beast, and with that said there is no taming a ZX10R.

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Last edited by ZX-10R_Sinner; 12-15-2008 at 06:32 PM.
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