KZScott
Needs a life
high on speed
Posts: 7235
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posted October 17, 2007 01:12 PM
brakes dragging. how much et/mph lost?
I noticed that my front brakes were dragging very bad when i had everything up on the stand when i had my rotors off to get drilled. i took the calipers apart and there was a huge build up of brake dust/dirt on the pistons which i believe was holding the pads aginst the rotors (pistons couldnt slide back in enough)  . my wheel would barely move when i gave it a big "spin" (about 1/4 turn). with everything back together now the wheel will spin over a few times before it stops  . just wondering how much that would have added to my times at the 1/4 mile and how many mph it knocked off. im guessing maybe half a tenth and 2-3mph?
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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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shiphteey
Needs a job
Posts: 2529
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posted October 17, 2007 09:29 PM
I pried my pads off my rotors at Maxton, went from 202.7 to 202.9....but there could have been other variables (like temp changes and wind) between runs.
I would venture at most a 1/10, more likely 1/2 that, but probably reflected in mph....1-2? 2-3 seems within the scope of possibility if it really was that bad.
A.
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Gemini Motorcycles
Topping out everything from Ninja 250s to nitrous ZX-14s.
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KZScott
Needs a life
high on speed
Posts: 7235
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posted October 17, 2007 09:58 PM
my wheel wouldnt spin around a 1/4 turn, now it will do several with the same force. it had to be holding me back some!
____________
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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entropy
Moderator
Posts: 8671
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posted October 18, 2007 03:07 AM
KZ,
there are some threads on this issue way back, but basically if you have a mostly track bike, simply take apart the calipers and clean everything with scotchbrite till all is shiny, then assemble without the dust seals. Your dragging brakes will magically stop dragging at all.
Ali,
fix your fukken front brake(s)!!!!! they suk!!!!! 
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This moderator uses moderation in moderation
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NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted October 18, 2007 04:56 AM
Did you champher the holes?
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entropy
Moderator
Posts: 8671
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posted October 18, 2007 05:21 AM
quote:
Did you champher the holes?
nope, just cleaned and somewhat polished everything
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KZScott
Needs a life
high on speed
Posts: 7235
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posted October 18, 2007 06:04 AM
I cleaned them up and the pistons actually go back into the clipers now lol. you should have seen the build up of shit on them. actually, ill show you once i get this camera thing sorted out, i took pics when i took them apart.
____________
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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osti33
Needs a job
Posts: 2973
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posted October 18, 2007 03:34 PM
quote:
Ali,
fix your fukken front brake(s)!!!!! they suk!!!!!
No doubt!! 
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NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted October 18, 2007 04:41 PM
champher/ counter sink the holes
____________
42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
Scorpion Helmets
Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
Mickey Thompson Tires
Catalyst Racing Composites
Conway Cycle
Syed Leathers
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KZScott
Needs a life
high on speed
Posts: 7235
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posted October 18, 2007 08:16 PM
ok, i have pics of what i did (finally got the cam to work with a different comp)
drilled front, stock rear:
drilled front and rear:
____________
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
|
KZScott
Needs a life
high on speed
Posts: 7235
|
posted October 18, 2007 08:17 PM
dirty parts!
____________
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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