Wheelie
Needs a life
Old Man
Posts: 6902
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posted May 20, 2009 03:09 PM
Booza Spring on a ZX-14
installed the 08 Booza spring on my rear shock, what a difference, stiffened up the soft 14 shock, this will help with a lowered 14 ridden on the street, and will help with to much squating at the drag strip when being launched with a big guy riding, im 217, I would not recommend this for 190lbs and lighter riders, but bigger guys this is perfect, you here that Richcraft? I'll try it at the drag strip Thursday night.
wee
  
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kawasakijockey
Pro
Posts: 1876
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posted May 20, 2009 03:29 PM
Good info Wheelie.
____________
Get on the shortbus boys 'cause its time to get schooled.
2007 ZX-14
1.38 60ft
9.03 @ 149mph
8.95 @153 small shot n2o
8.68 @160mph 5lbs boost
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BLK ICE
Pro
we'll leave the light on for u
Posts: 1709
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posted May 20, 2009 04:52 PM
 Edited By: BLK ICE on 21 May 2009 00:53
Thanks for the info. I haven't had a problem with the stock shock with 44 tooth sprocket, but my 48 should be here in a day or two and from watching your vid. I think I will need a stiffer shock.
If you know were I can find one plz let me know dhdgr8 at yahoo dot com.
____________
Fastest Stock Motor, Stock Bodywork, Hand Clutch, N/A Super Heavy Hitter on the Planet!
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dubious
Needs a life
Needs more time to ride!
Posts: 8442
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posted May 20, 2009 06:51 PM
I had figured it would be about dead on springrate with 6" stretch and 200-220 lbs rider
____________
natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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Wheelie
Needs a life
Old Man
Posts: 6902
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posted May 20, 2009 06:54 PM
quote:
I had figured it would be about dead on springrate with 6" stretch and 200-220 lbs rider
yes I forgot to mention that this should probably be applied to stretched 14's
wee
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ZX11D
Zone Head
Internet Police
Posts: 674
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posted May 20, 2009 08:00 PM
Reading the header, at first thought you will spend this year's spring drinking booze on your ZX-14 
Initial impression on a side, thanks for the info 
____________
'94 ZX-11
'07 ZX-14
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kenneth charles
Parking Attendant
Posts: 27
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posted May 20, 2009 08:12 PM
just bought a spring from race tech.looked into the busa spring,i think it has a 13.1kg rating.stock zx is like 9.6kg.recommended spring,for me(240lbs.),was an 11.7kg from racetech.but that is for stock length.brad at racetech ,converted the 11.7 to lbs(x 56=approx 650lbs)added 25lbs to the spring rate for each inch of stretch(6"=150lbs)and came up with an 800lbs(/56=14.28 kg) spring for me.i am waiting on it now,we'll see what happens.just my 2 cents.
spring cost $119
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dubious
Needs a life
Needs more time to ride!
Posts: 8442
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posted May 20, 2009 09:01 PM
I used the stock arm length of 24" + 6" = 30"
30/24 = 125%
125% of what Racetech recommend for your weight on stock arm = xx.xx
this would work in theory for any weight and any length, by determining what rate they recommend stock for your weight, multiplied by percentage of length.
____________
natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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BigJaay1
Novice Class
THUNDAKAT RACING
Posts: 62
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posted May 21, 2009 07:00 AM
Thanks Wheelie. I will try to get my Busa spring on this weekend.
Jay
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2006 Kandy Brandywine / White Diamond ZX14 - HPC POWERED
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BigJaay1
Novice Class
THUNDAKAT RACING
Posts: 62
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posted May 21, 2009 07:07 AM
Thanks Wheelie. I will try to get my Busa spring on this weekend.
Jay
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2006 Kandy Brandywine / White Diamond ZX14 - HPC POWERED
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joemugg
Expert Class
Posts: 109
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posted May 31, 2009 06:04 PM
Is the '08 the only one that works, or do the earlier years work also?
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'06 ZX14 blue, Muzzy M14/M10, flies out, BMC filter, PCIII, SpeedoHealer, Scott's Steering Damper, 16 tooth Vortex
'97 GSXR600 street sweeper
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Compton
Zone Head
Posts: 969
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posted May 31, 2009 07:06 PM
08 09 have a heavier spring then the 99 - 07 bikes
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b.w.
zx14, little longer, little louder, little lower.
08 Busa, just a little longer and louder and lower than the 14
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kenneth charles
Parking Attendant
Posts: 27
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posted May 31, 2009 07:28 PM
i installed the '08 usa spring on my 14.the one i had ordered,from racetech,had not arrived when i had the time to change it.rode the bike about 100 miles today,with a 150lb. passenger,without a rub.my bike is 6" over,with soupy's adj. lowering links adjusted out as far as recommended(the length of the threaded body plus 3 1/2")this same set up with stock spring would rub the undertail.i weigh 240lbs.the busa spring has a 13.1kg rating,racetech recommended a 14.25kg for my weight and stretch.the racetech spring arrived on friday,i'm going to try to change it this week.
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the14thninja
Novice Class
Show and Go
Posts: 49
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posted June 01, 2009 01:43 PM
I found my 08 busa spring on ebay for $60 and it works great my 14 has a 240 tire kit and is stretched 8 inches over and it doesn't bottom out when i go 2 up.
____________
I live to ride and ride to live
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