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Old 05-10-2011, 08:37 AM   #1
Levi_ZX
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Exclamation New Clutch Kit... Question??

Just finished installing a complete Barnett Clutch kit in my '00 ZX12r over the weekend.. New steels, friction plates, and springs

the question= When I launch the bike (dragging my clutch) I'm hearing a grinding right before i'm fully off the clutch.. Now if i just dump the clutch and get on the gas..No grind and all is good. Is this grinding just because they are BRAND NEW plates and will go away after a few launches at the strip or do i need to adjust the clutch more???

Thanks in advance for any input on this matter... Levi

p/s: the bike pulls like a scalded dog in any gear and any rpm so the clutch is for sure doing it's job properly.. Thanks
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Old 05-10-2011, 08:52 AM   #2
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Did you soak the fibers first? Did you check your stack height?
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Old 05-10-2011, 08:57 AM   #3
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Quote:
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Did you soak the fibers first? Did you check your stack height?
soaked em for about 45 min and yes i checked the stack height. Was on phone with Barnett Technician triple-checking everything befor i started. He actually told me didn't need to soak but i did a little anyway
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Old 05-10-2011, 09:01 AM   #4
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You sure it a grind and not a chatter?
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Old 05-10-2011, 09:05 AM   #5
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Quote:
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You sure it a grind and not a chatter?
I think so.. What would a chatter be indicating?
I did a test run riding to 11k rpms and pulled perfectly straight thru the middle of 5th gear and i ran out of road but that was indicating over 170 so... I figure it's doing its job???
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Old 05-10-2011, 09:10 AM   #6
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You 100% certain on your install job? IMO next time use OEM rather than Barnett.
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Old 05-10-2011, 09:13 AM   #7
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I still have my OEM steels... You think i should put them back in and just use the new frictions? Or maybe resoak the frictions???
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Old 05-10-2011, 09:16 AM   #8
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The steels are not my concern. It's all the I have read about Barnett clutch fibers. Sounds like you may need to start over. You getting instruction a manual? Check the hub and basket too.
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Old 05-10-2011, 09:18 AM   #9
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oh ... what have u heard?
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Old 05-10-2011, 10:08 AM   #10
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This is my first time venturing into after market clutches! I've always went OEM but figured I'd try something that is supposed to be better and last longer...

Yes I have a manual. WHAT IS SO BAD ABOUT BARNETT CLUTCHES? this isn't first one
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Old 05-10-2011, 10:17 AM   #11
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Research tells me OEM outlasts Barnett. Im just judging by I have read.
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Old 05-10-2011, 10:58 PM   #12
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Problem solved!!!!! There are 2 thin washers/spacers that are used in the OEM clutch. After removing them no more chatter :-) I went ahead and soaked the friction plates for 4 hours before reinstalling everything and better than new now.

P/s: to those it concerns... I change my oil every weekend anyway so once these Kevlar plates are toast I will go with OEM next time.

Thank You to all who replied!
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Old 05-11-2011, 02:42 AM   #13
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Those thin ones are actually anti-chatter plates. From what I've seen on the ZX forums the aftermarket tend to be more abrasive on the steels, and dump more trash in the oil.

For dedicated drag racing we usually go to 2.0 steels and toss the thin shims. Helps pull more heat out and reduce warping.

You DO have a billet basket on there, right? If not, STOP dragging it until you do. The 2000/2001 are grenades basically. You also need an 02 and up hub, or drill out the stocker.
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Old 05-11-2011, 07:07 AM   #14
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I wondered if your bike had anti chatter rings.
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Old 05-11-2011, 07:17 AM   #15
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Quote:
Originally Posted by bluewave18 View Post
I wondered if your bike had anti chatter rings.
Niether of them do; never noticed any issue on the street bike.

They tend to crack under drag strip abuse so most toss them out.

I changed the 02 to a 00 style pack anyhow... a little more meat.



Levi_ZX... if you are planning on doing a lot of drags, get the transmission undercut... you'll thank me later.
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Last edited by texlurch; 05-11-2011 at 07:20 AM.
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Old 05-11-2011, 07:21 AM   #16
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I have ran across the discussions about the baskets in those bikes. That's why I asked if he inspected his. I have PT tested mine to look for fatigue cracks or other indications.
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Old 05-11-2011, 07:25 AM   #17
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The 02 and up hubs are fine; they are drilled to improve the oiling. The 02 and up baskets were redesigned and are OK for street

But for drags or lots of abuse, you need a billet. It's not if, it's definately win it will scatter.
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Old 05-11-2011, 08:56 AM   #18
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Billet basket yes.. will be drilling out the hub next weekend.

I am running 3 stock springs and 3 Barnett springs (10% stiffer) staggered of course and I'm thinking about going back to all 6 Barnett springs.. any thoughts??
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Old 05-11-2011, 08:58 AM   #19
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I cant slip it right with all 6 heavy springs. Mine are 30% stiffer though. You may also need a slave support if you go all heavy.
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Old 05-11-2011, 09:30 AM   #20
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No slave on the ZX12; cable.

I run 3 stock and 3 ZX6 springs, which are the budget stiffer ones. All 6 stiff springs was a tad stiff on the lever, and I have big hands.

Try it and see.. if it's too stiff at the lever and you still have issues, go to a lock up style... that's another part I have laying around I need to install...
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