mono12r
Novice Class
Posts: 38
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posted August 05, 2008 10:07 AM
Warped front rotors
Anyone experience this on the ZX14? Mine are warped and Kawasaki is going to replace them under warranty this one time. It's a 2008 with 4800 miles, stock pads......been mostly two up comuting to work, a few trips, a few Sunday blasts and one track day.
Seems odd to me...I put 48,000 miles on a 2002 ZX12R, with MANY track days and never once had a warped rotor. I did on a 2001 ZX12R but was utilizing HH race pads with stock rotors.
Here is a pic of my bike loaded for a weekend trip.
   
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budwardo
Novice Class
Posts: 64
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posted August 05, 2008 10:58 AM
My 07 with 8k just got the rotors replaced under warranty also. Real bad vibration when braking. It is a heavy bike but on my busa I had never a problem. It seams like Kawi uses the same rotors on all there bikes. By the way the retail is around 700 bucks for factory rotors. Can you please tell me about your tail bag system. I am goin on a 1200 mile round trip ride.
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tater
Expert Class
Shakin off the Haters
Posts: 212
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posted August 05, 2008 11:14 AM
I have 7100 mile on my 06 and the rotors are warped. Just thinking about going with all new Galfer rotors
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ZX-14 06
Flies out
-1 front, +2 rear
2 Bros carbon fiber pipes
Tiger tail
Carbon fiber windscreen
64inch wheel base
lowering links
RC components wheels
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flatoutbu
Pro
Posts: 1054
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posted August 05, 2008 11:19 AM
I have made many 1/4 pass's on my 14 and the rotors are fine. I have almost 4000 miles on mine with the orig pads...oh yea i took off the back brakes, i don't even use them.
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06 Blue 14
9.008 at 153mph @ 195 suited
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mono12r
Novice Class
Posts: 38
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posted August 05, 2008 11:37 AM
My luggage system is the Dowco Fastrax. Here is a link....
http://www.dowcopowersports.com/products/motorcycle_luggage/fastrax/
Nice luggage for the price and they have several colored inserts to match your bike...(comes with it.)
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mono12r
Novice Class
Posts: 38
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posted August 05, 2008 11:41 AM
Here is a pic of my other bike with the same luggage system with the yellow inserts in place.
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intimida2or
Needs a life
RED rider!
Posts: 13081
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posted August 05, 2008 12:05 PM
I've had that problem with the rotors but since i tried my fix they've been fine. I've replaced with new rotors on my Red 14 and again they warped. So i attached my dial indicator to the rotors and used my big cresent wrench to straighten them out . Never had that problem again! Did the same fix to my Blue 14 and she is also stopping good as well.
I dunno if is a permenant fix but so far so good !
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'06 Passion Red ZX-14
*Lee*
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madboost
Expert Class
Posts: 187
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posted August 05, 2008 03:36 PM
thats some serious luggage..
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08 zx14-with a few things.
94z28 383,TH400,YSI,9",DFI and much more
9.44@144 w 1.5060ft
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dcjens
Pro
Wet side of Washington
Posts: 1059
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posted August 05, 2008 05:19 PM
I've had my bike 2 months now and I suspect warped rotors with barely 9k miles. I noticed a bad vibration when I first got it with 6100 miles. It has an extended service warranty but kawi said it doesnt cover brake parts including rotors. I got a mag mount dial caliper to check it but the mag mount sucked and was too short to mount anywhere. I tried to mount it on a heavy toolbox. The needle bounced all over just from grabbing the tire to spin it. hmm. Im afraid to take it to the shop as the frame recall might get it confinscated. I figure I'm already gonna die on this bike so I'll wait till dead of winter to get the frame looked at.
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Black 06
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stevewfl
Moderator
Posts: 27920
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posted August 05, 2008 06:16 PM
i was hell on my 14 rotors in the mountains, and had the sweet HH pads. Never had a problem with them for 15K miles.
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2010 Concours14
'08 R1 YAMAHA
ZX14 gone!
CBR600RR track bike
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mono12r
Novice Class
Posts: 38
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posted August 06, 2008 05:20 AM
It seems to me that theres been a few cases of this, which warants looking into.
I'm wondering if I should dime for some after market rotors and pads, as Kawasaki claims they will only cover it under warranty this ONE time.
I understand the weight of a ZX14, braking forces and such, but I am also comparing it to a ZX12R which never had rotor problems. Or atleast mine didn't and I don't recall ever hearing of problems on the different ZX12R forums.
Perhaps there's a difference in material, size, cooling...dunno...???????????
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lietoome
Needs a job
Posts: 2033
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posted August 06, 2008 05:35 AM
Warped the rotors on my '03 zx12, 10K miles on the 14 and they are holding strong.
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mono12r
Novice Class
Posts: 38
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posted August 06, 2008 07:44 AM
quote:
Warped the rotors on my '03 zx12, 10K miles on the 14 and they are holding strong.
Well, ya just blew my ZX12R comparison theory right outa the water!! LOL 
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mono12r
Novice Class
Posts: 38
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posted August 07, 2008 08:31 AM
I did some checking last night and comfirmed that the 2008 ZX10 share the same front rotors as the 2008 ZX14. My questions and concerns are supposed to go to the Kawasaki Rep, as I would like to know how a 100 lb heavier bike is supposed to cope with braking forces the same as a ZX10. My dealer told me that Kawi said mine was due to overly agressive braking. HELLO...WTF is the ZX14 designed to due??...GO FAST, which means it needs to STOP FAST also!!!
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Sticks_n_Stones
Needs a job
Posts: 3930
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posted August 07, 2008 09:47 AM
I'm guessing that the rotor warp issue is related to doing stoppies, or maybe coming to a stop from a high speed and not rolling forward from that stop location, which puts all that brake pad heat into the rotor directly under the pads, causing uneven heating- a very common high performance car problem. Do what they do: roll it forward half a tire revolution a few seconds after the stop to spread the heat evenly over the rotors.
Ever watch a car race that involves pitting, if the pit stop is more than just a quick gas-n-go the guys jack it and roll the tires by hand? It's to keep the rotors from warping after the high speed stop.
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'06 zx14
Muzzy M10/M14
PCIII w/ Muzzy map
Flies out K&N in!
bits n pieces...
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mono12r
Novice Class
Posts: 38
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posted August 07, 2008 09:55 AM
No "stoppies" for this cat, but perhaps whilest riding two up, I did make a bit of a panic stop for a traffic situation but it was far from being high speed. Come to think of it...I NEVER rode two up on my ZX12's. Hmm.....extra weight....??
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Sticks_n_Stones
Needs a job
Posts: 3930
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posted August 07, 2008 10:02 AM
That extra weight doesn't help, adding even more heat to the pads, but considering how fast and how much heat those pads can deal with I would say one E stop shouldn't be enough to do it by itself. Now if you were road racing, doing the brake gas brake gas route and then E stopped I could see it.
I personally would take a heavy hammer or small sledge hammer and tap the rotors where its warped. See if its just an issue of popping it back into place, or as another Bikelander stated, he used a large crescent wrench to bend it back to straight and it worked.
If thats true, it sounds more like an issue with the disc lock washer things that hold the rotor on being skewed out of place, not the rotor itself.
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'06 zx14
Muzzy M10/M14
PCIII w/ Muzzy map
Flies out K&N in!
bits n pieces...
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mono12r
Novice Class
Posts: 38
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posted August 07, 2008 11:05 AM
Thanks for the advice Sticks and everyone else.
The new rotors won't be in until next week, and I am planning on having the old ones looked at with a dial indicator, etc... to see just whats up and if they can be straightened. Although, i'm sure kawi wants them back.
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intimida2or
Needs a life
RED rider!
Posts: 13081
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posted August 07, 2008 11:40 AM
quote:
I did some checking last night and comfirmed that the 2008 ZX10 share the same front rotors as the 2008 ZX14. My questions and concerns are supposed to go to the Kawasaki Rep, as I would like to know how a 100 lb heavier bike is supposed to cope with braking forces the same as a ZX10. My dealer told me that Kawi said mine was due to overly agressive braking. HELLO...WTF is the ZX14 designed to due??...GO FAST, which means it needs to STOP FAST also!!!
Hmmm i wondered about the zx10 rotors being interchangable i just never checked into it. I do know the zx10 rotors are much thicker than the 14's .... interesting!
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'06 Passion Red ZX-14
*Lee*
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kmajeed
Parking Attendant
Posts: 1
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posted September 03, 2009 11:34 AM
I have a 2008 ZZR-1400 with 9k miles and am also suffering from warped front discs. Dealer refusing to replace them under warranty so now have to take it up with Kawasaki UK.
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Flame On
Needs a life
Fuel Air & Spark
Posts: 17104
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posted September 03, 2009 12:18 PM
So stock pads heat up a lot more than after market HH soft pads? glad I changed mine out to HH
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77 RD 400
80 GS1000 GT
06 ZX14
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Sticks_n_Stones
Needs a job
Posts: 3930
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posted September 03, 2009 01:40 PM
Incorrect: aftermarket pads ABSORB more heat than stockers and claim to dispel that heat faster (ie, transfer it to air, caliper, and rotor). They are a more abrasive pad than stock, which tends to wear down rotors faster than stock pads which are usually designed to take the wear themselves: by the mechanism of wearing down they also are able to keep themselves from heating up as fast, though more of that heat is left in the rotor. Having a pad that is abrasive requires the tradeoff of that pad being able to:
1. Absorb as much of that heat as possible from the rotors.
2. At the same time be able to dispel that heat to the air quicker, and the key:
3. Operate in extreme heatsoaked conditions (a byproduct of absorbing and creating all that heat) at and above there performance at ambient temperatures.
The materials required to handle operating at such extreme conditions usually necessitate a trade off in cold performance: That is one of two key tradeoffs in using full race spec brake pads on the streeet. The other is the accellerated wear of the rotors. Some brake pads (older style carbon/carbon MotoGP for example) actually cannot operate in wet conditions as they will absorb water which degradates them.
All that being said, the EBC HH pads are my favorite for the streeet. They operate decent enough cold, and only a couple stops is all it takes to get outstanding performance.
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'06 zx14
Muzzy M10/M14
PCIII w/ Muzzy map
Flies out K&N in!
bits n pieces...
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Flame On
Needs a life
Fuel Air & Spark
Posts: 17104
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posted September 03, 2009 01:43 PM
Good to know thanks
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77 RD 400
80 GS1000 GT
06 ZX14
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SteveWFL
Moderator
Posts: 27920
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posted September 03, 2009 07:11 PM
 Edited By: SteveWFL on 4 Sep 2009 03:11
quote:
Incorrect: aftermarket pads ABSORB more heat than stockers and claim to dispel that heat faster (ie, transfer it to air, caliper, and rotor). They are a more abrasive pad than stock, which tends to wear down rotors faster than stock pads which are usually designed to take the wear themselves: by the mechanism of wearing down they also are able to keep themselves from heating up as fast, though more of that heat is left in the rotor. Having a pad that is abrasive requires the tradeoff of that pad being able to:
1. Absorb as much of that heat as possible from the rotors.
2. At the same time be able to dispel that heat to the air quicker, and the key:
3. Operate in extreme heatsoaked conditions (a byproduct of absorbing and creating all that heat) at and above there performance at ambient temperatures.
The materials required to handle operating at such extreme conditions usually necessitate a trade off in cold performance: That is one of two key tradeoffs in using full race spec brake pads on the streeet. The other is the accellerated wear of the rotors. Some brake pads (older style carbon/carbon MotoGP for example) actually cannot operate in wet conditions as they will absorb water which degradates them.
All that being said, the EBC HH pads are my favorite for the streeet. They operate decent enough cold, and only a couple stops is all it takes to get outstanding performance.
+1 by far
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2010 Concours14
'08 R1 YAMAHA
ZX14 gone!
CBR600RR track bike
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zixxer14
Pro
Damn that was Quick
Posts: 1233
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posted September 03, 2009 09:28 PM
+2 Been running EBC HH pads on all my bikes for many years. Never had a rotor issue yet(knock on wood). Cheapest brake upgrade around.
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