woppi
Pro
Posts: 1362
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posted December 12, 2007 08:34 AM
ZX12R Engine - Balancer - Yes ? No ?
i am thinking about ?
------ put the balancer out of my zx12r engine ?
my crank is new balanced !
entropy wrote me, he is riding without the balancer since 2002 !
please give me your arguments
thanks
woppi
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1st TFA Member / Austria !
" if it has wheels or titts - sometimes you will get troubles "
2000 Limited ZX12R NOS
  
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mrsantafe
Zone Head
Posts: 521
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posted December 12, 2007 09:52 AM
The answer depends:
pros- close to three pounds removed, seems to accelerate better
cons: more vibration as the bike now feels like a busa
I would do it if your already in the motor but just to do it i wouldn't bother.
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9.78@155.13 mph 1.71 60 ft @ a near mile high dragstrip
2006 ZX14 gone
2006 ZX10r (Wifes street bike)
2004 zx10r (her race bike)
2002 ZX12 (still kicking a--)
2007 gsxr 1k (race bike)
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entropy
Moderator
Posts: 8671
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posted December 12, 2007 10:13 AM
i never felt any more vibration without the balancer, but i don't ride on the street, and my heap is so raggedy i prob couldn't tell anyway 
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This moderator uses moderation in moderation
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KZScott
Needs a life
high on speed
Posts: 7235
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posted December 12, 2007 11:51 AM
if you had your crank balanced, I would try it, but Im no expert. Im leaving mine in as my crank wont be touched. if/when i stroke my crank down the road and get it balanced, i will try no balancer then
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01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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woppi
Pro
Posts: 1362
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posted December 12, 2007 12:25 PM
thanks for your arguments
i do only drag racing with my bike ---NO street riding!
@mrsantafe -- till now - i have NEVER tested a birdbike (busa)!!! and i will NEVER NEVER try one!!!!
sorry can not try it ---- it is against my religion ( kawasaki rules) !!! never ride a bird !!!!
woppi
____________
1st TFA Member / Austria !
" if it has wheels or titts - sometimes you will get troubles "
2000 Limited ZX12R NOS
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oof440
Expert Class
Posts: 137
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posted December 12, 2007 01:33 PM
Mines been out for over a year and I ride on the street. 8000 miles since pulling it and no problems.
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KZScott
Needs a life
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Posts: 7235
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posted December 12, 2007 02:43 PM
quote:
till now - i have NEVER tested a birdbike (busa)!!! and i will NEVER NEVER try one!!!!
sorry can not try it ---- it is against my religion ( kawasaki rules) !!! never ride a bird !!!!
woppi
we have the same religion
heres my 2 cents (canadian at that lol) from the factory, some cranks would be balanced better than others to some extent, since it is/was a mass produced crank. some guys might get lucky and have a really good one while other guys would get one thats well within the acceptable limits for a factory crank, but not as good as one balanced professionally by falicon or marine or ape. the "good" factory crank might be just fine without the balancer, but the "ok" factory crank might need to be balanced by a pro before it can be run without the balancer for a long and problem free life.
(it makes sense to me anyway, im no builder, but im working on that :P)
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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krexken
Zone Head
Posts: 732
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posted December 12, 2007 05:21 PM
The counterbalancer has little to do with how well your current engine is balanced or will be balanced. It´s purpose is to counteract imbalance with the engine running, not just spinning. I couldn´t tell the difference with mine removed.
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NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted December 12, 2007 08:12 PM
who cares about the shaking......, question is, is it RELIABLE HP?
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tcchin
Zone Head
Posts: 867
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posted December 12, 2007 08:45 PM
As krexken said, the counterbalancer has little to do with the static balance of the crankshaft assembly; it is a dynamic device that operates at twice the frequency of the crankshaft. I have never noticed any difference in vibration levels or reliability in any of the motors from which I've removed a counterbalancer.
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KZScott
Needs a life
high on speed
Posts: 7235
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posted December 12, 2007 09:03 PM
why does DM say he noticed a difference then? hmmm
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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tcchin
Zone Head
Posts: 867
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posted December 12, 2007 11:08 PM
Because I was not speaking for Doug, I was only summarizing my experiences with the motors I've built.
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KZScott
Needs a life
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Posts: 7235
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posted December 13, 2007 02:34 AM
ah, I wasnt paying attention to your wording. all this got me thinking about going with the muzzy dummy shaft again. i went a little trigger happy with the search button and found some good posts on this subject.
http://www.bikeland.org/board/viewthread.php?FID=13&TID=5160&pagenumber=1
http://www.bikeland.org/board/viewthread.php?FID=1&TID=9425&set_time=1068616111
after reading that, and understanding the concept better, i think i might try out no balancer. its what, a $20 part from muzzys to make it really easy.
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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woppi
Pro
Posts: 1362
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posted December 13, 2007 04:49 AM
!
@KZScott ------------- thanks a lot !
woppi
____________
1st TFA Member / Austria !
" if it has wheels or titts - sometimes you will get troubles "
2000 Limited ZX12R NOS
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SteddyTeddy
Pro
Posts: 1664
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posted December 13, 2007 05:49 AM
I pulled the ballancer in my ZRX and wish I would have left it in. More vibration everywhere. At the track I don't notice it but on the street it get quite annoying.
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TRNorBRN6001
Needs a job
Posts: 2021
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posted December 13, 2007 06:14 AM
Mines out, not much difference in vibration. I Don't think its worth it unless your going
all out and need that extra tiny, tiny, tiny bit of HP. Becareful not to nick the O-ring while
slipping it in.
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entropy
Moderator
Posts: 8671
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posted December 14, 2007 12:36 AM
and be quadruple sure to reliably plug that lil oiling hole.
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woppi
Pro
Posts: 1362
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posted December 14, 2007 01:01 AM
?
i dont know ! what i should do ??
balancer out ??
balancer in ??
my engine is open ! cases are splitted -- crank is balanced !
think about -- open some beer´s and then i know it ??
woppi
____________
1st TFA Member / Austria !
" if it has wheels or titts - sometimes you will get troubles "
2000 Limited ZX12R NOS
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TRNorBRN6001
Needs a job
Posts: 2021
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posted December 14, 2007 06:46 AM
Might as well pull it if its apart.................or you'll end up saying I wish I would have done this or that.
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