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BIKELAND > FORUMS > ZX-14.com > Thread: Shock revalve seems to help. NEW TOPIC NEW POLL POST REPLY
kawasakijockey


Pro
Posts: 1876
posted January 17, 2010 05:27 PM        
Shock revalve seems to help.

235lb suited rider, stock engine pass. No spray.

1.3807 60 ft
3.818 330ft.
5.851 1/8th
120.10 mph
____________
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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14nooby


Zone Head
Posts: 987
posted January 17, 2010 05:33 PM        
Was your previous best 60ft the 1.46?
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eklipse636


Needs a life
ZX-14
Posts: 6046
posted January 17, 2010 05:44 PM        
Those look like good times. Compare before times to the new shock times.
____________
Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32

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Bawls


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re-learning to ride
Posts: 2701
posted January 17, 2010 06:05 PM        
60fts are bitching, but how was the air compared to before?
____________
Best 60ft: 1.42
Best 1/8th: 5.97
Best 1/8th MPH: 119

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KZScott


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Posts: 7235
posted January 17, 2010 06:11 PM        
nice! i hope my shock does that for me in the spring
____________
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
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kawasakijockey


Pro
Posts: 1876
posted January 17, 2010 07:29 PM        Edited By: kawasakijockey on 18 Jan 2010 03:38
1.46 was the best before today. Air conditions were worse than before, 68degrees and 90% humidity. Best before today was 1.46, 3.90, 5.90 @ 121mph.
____________
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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Bawls


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re-learning to ride
Posts: 2701
posted January 17, 2010 08:02 PM        
kick ass man... who did your shock, and what all did you have done to it? when I got my spring put on, racetech wanted to revalve, shorten, and re-spring it for me. They quoted me at around 650 drive in/drive out.
____________
Best 60ft: 1.42
Best 1/8th: 5.97
Best 1/8th MPH: 119

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kawasakijockey


Pro
Posts: 1876
posted January 17, 2010 08:21 PM        Edited By: kawasakijockey on 18 Jan 2010 04:43
Gravett Racing in Beaumont Texas did the revalve. They have never done a shock for dragracing before mine. I told him him I needed the shock rebound slowed down and he shimmed it and put the nitrogen bladder pressure to 200 psi for my weight and wheelbase. He will adjust it to my liking at no extra charges.
I witnessed today on another racer's bike what happens when the nitrogen bladder has low pressure in it. It speeds up the shocks compression and rebound. It was a zx10 with a shrader valve so they put air pressure on it and the shock immediately slowed on the stroke. Especially the rebound. I advise anyone with a stock shock on an extended 14 to take their shock to a motocross shop and have the nitrogen charged to at least 150psi factory pressure. The pressure bleeds off after a while and softens the shock feel.
____________
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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gilberjj


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Posts: 3196
posted January 17, 2010 09:36 PM        
what kinda price are you talking about?
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kawasakijockey


Pro
Posts: 1876
posted January 17, 2010 09:54 PM        
quote:
what kinda price are you talking about?
$150
____________
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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Bawls


Needs a job
re-learning to ride
Posts: 2701
posted January 17, 2010 09:58 PM        
are you running a heavier spring? as well ?
____________
Best 60ft: 1.42
Best 1/8th: 5.97
Best 1/8th MPH: 119

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eklipse636


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ZX-14
Posts: 6046
posted January 18, 2010 05:02 AM        
You can get the shock revalved and new spring from Adams performance for I think $400. That's good that you gained that much! I hope I can have the same gains as you... A 1.30 60ft???
____________
Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32

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eklipse636


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ZX-14
Posts: 6046
posted January 18, 2010 05:05 AM        
quote:
kick ass man... who did your shock, and what all did you have done to it? when I got my spring put on, racetech wanted to revalve, shorten, and re-spring it for me. They quoted me at around 650 drive in/drive out.


that's too much. Adams says at out weight it would be close as to not needing a spring, just revalving. Macintosh does it too.
____________
Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32

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kawasakijockey


Pro
Posts: 1876
posted January 18, 2010 08:05 AM        
quote:
are you running a heavier spring? as well ?
Yep, an 08 busa spring set full soft.
____________
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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Shane661


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Posts: 11494
posted January 18, 2010 08:13 AM        
Very nice.

What is your wheelbase?

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08green


Expert Class
Posts: 188
posted January 18, 2010 08:21 AM        
Is your new shock stiff?? I sent my stock zx14 shock to adams and now it is very stiff..
____________
2004 ZX10
2008 ZX14

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kawasakijockey


Pro
Posts: 1876
posted January 18, 2010 08:22 AM        Edited By: kawasakijockey on 18 Jan 2010 16:23
WB is 65.75 .
Yes, the shock is stiff. I have to set both screws full soft to street ride.
____________
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

  Ignore this member   
Shane661


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Posts: 11494
posted January 18, 2010 08:31 AM        
Fantasic results. I have a Penske, but I may end up having it reworked for additional wheelbase.
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kawasakijockey


Pro
Posts: 1876
posted January 18, 2010 08:41 AM        
With the busa spring I have the rebound 1/4 from full hard and compression 1 turn from full soft. Those settings would be completely different with the stock spring. I could feel the bike squat and seem like it stayed there. It did not spin the tire at the shifts anymore either.
____________
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

  Ignore this member   
eklipse636


Needs a life
ZX-14
Posts: 6046
posted January 18, 2010 11:11 AM        
quote:
With the busa spring I have the rebound 1/4 from full hard and compression 1 turn from full soft. Those settings would be completely different with the stock spring. I could feel the bike squat and seem like it stayed there. It did not spin the tire at the shifts anymore either.


did you ever try it with just the Busa spring and not revalved?
____________
Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32

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SteddyTeddy


Pro
Posts: 1664
posted January 18, 2010 12:32 PM        
The Busa spring is 3 or 4 steps stiffer than the stock 14 spring. Only makes sense that the valving would be too soft for the stiffer spring.
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kawasakijockey


Pro
Posts: 1876
posted January 18, 2010 01:54 PM        
quote:
quote:
With the busa spring I have the rebound 1/4 from full hard and compression 1 turn from full soft. Those settings would be completely different with the stock spring. I could feel the bike squat and seem like it stayed there. It did not spin the tire at the shifts anymore either.


did you ever try it with just the Busa spring and not revalved?

Yes. For a few months. The Busa spring alone was a great improvement but it was too strong for the stock rebound valving. It seemed to get worse every Saturday. I could feel the bike squat and come up almost immediately. With the stock spring and valving the bike would wheelie 15 feet off the line when trying to get my fat ass in the 1.40's. With the busa spring it would start lifting at 30ft or so but allowed 1.46-1.48 60fts pretty consistently.
____________
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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gilberjj


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Friend of Fast
Posts: 3196
posted January 18, 2010 06:37 PM        
Great info. Thanks!
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Newf14


Zone Head
2007 ZX1400
Posts: 563
posted February 12, 2010 05:16 PM        
I found a local guy who deals in shocks and am getting mine revalved for $80.00. What should I get done 210 lbs rider, bike is 65-66 inch wheel base?how many shims?

Newf14

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gilberjj


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Friend of Fast
Posts: 3196
posted February 12, 2010 05:28 PM        
I have a great suspension guy local. So what should I ask him to do? He's never done drag shocks. 200ish psi? hayabusa spring? and how many shims?
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