2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

New Clutch and still slips...89GXL

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Old Aug 1, 2002 | 11:51 PM
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New Clutch and still slips...89GXL

Its the bonez street standard unit. What the deal. It slips at high rpms when shiftin fast and the stock one never did. Do lyou think its the flywheel. THnx alot
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Old Aug 1, 2002 | 11:58 PM
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Re: New Clutch and still slips...89GXL

Originally posted by von
Its the bonez street standard unit. What the deal. It slips at high rpms when shiftin fast and the stock one never did. Do lyou think its the flywheel. THnx alot
Its probably you not breaking in the clutch. Hello new clutch! Maybe this time you'll go easy on it until its worn in.
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Old Aug 2, 2002 | 12:19 AM
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I put 300 miles on it and Rotory performance said all it needs it 50. So I think its pretty worn in already.
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Old Aug 2, 2002 | 12:24 AM
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Originally posted by von
I put 300 miles on it and Rotory performance said all it needs it 50. So I think its pretty worn in already.
Oonly 50??
most take 500. I reccomend 800.

Maybe the bonez just sucks then... you do any resurfacing to the flywheel?
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Old Aug 2, 2002 | 12:26 AM
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i put 1500 on my clutch (on my old N/A) before I began to beat on it. 300 isnt nearly enough, let alone 50.

500-600 is the norm, I am just a super cautious freak

Jameson
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Old Aug 2, 2002 | 05:02 AM
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Do you have a lightened aluminum flywheel?? I had one and it would make my new clutch slip when I shifted at high rpms. I got a lightened steel flywheel and problem solved.
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Old Aug 2, 2002 | 05:17 AM
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Pressure plate maybe?
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Old Aug 2, 2002 | 09:39 PM
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Pressure plate is new so is friction and release bearing. Common guys. This sysytem looks high quality. Its from bonez you know rx7.com. They told me 50 miles. ITS NOT A RACING CLUTCH. So it doesent need to be worn in like 5000 miles. Its STANDARD STREET CLUTCH. Holds 10 percent more than stock. SO it shouldnt slip at all !!! with my N/A. I used a 40grit on the stock flywheel. The clutch before this one was toast.

Anyone else?
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Old Aug 2, 2002 | 09:45 PM
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Originally posted by von
Pressure plate is new so is friction and release bearing. Common guys. This sysytem looks high quality. Its from bonez you know rx7.com. They told me 50 miles. ITS NOT A RACING CLUTCH. So it doesent need to be worn in like 5000 miles. Its STANDARD STREET CLUTCH. Holds 10 percent more than stock. SO it shouldnt slip at all !!! with my N/A. I used a 40grit on the stock flywheel. The clutch before this one was toast.

Anyone else?
Racing clutches take almost nothing, if anything, to break in. My guess is confusion over break-in time, perhaps a typo. 50 miles is too short, no matter what RX7.com tells you. That is ridiculous.

I guess you could also check the slave cylinder for full release, and it possible you the flywheel is too warped, but my guess is you toasted a new clutch by racing on it before you broke it in.
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Old Aug 2, 2002 | 10:59 PM
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Hey guys, Maybe im retarted but. what exactly is the process of breaking in a clutch? is there a spcific rpm you have to stay under? Should you try not too slip it too much or slip it alot? im really quite clueless on this subject. Thanks

Jerry
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Old Aug 2, 2002 | 11:28 PM
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From: KC
just go really easy on the clutch - i.e. no racing, no high rpm shifting, etc.

just be nice!
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Old Aug 2, 2002 | 11:39 PM
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Originally posted by Fox4Life
Hey guys, Maybe im retarted but. what exactly is the process of breaking in a clutch? is there a spcific rpm you have to stay under? Should you try not too slip it too much or slip it alot? im really quite clueless on this subject. Thanks

Jerry
Same way you break in an engine. Nothing over 4000 rpm, and avoid WOT and dumping the clutch (especially).
And don't try to shift mad kwik yo.
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Old Aug 2, 2002 | 11:43 PM
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Did you change the pilot bearing?
chuck
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Old Aug 2, 2002 | 11:48 PM
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Originally posted by chuck8313BTSDS
Did you change the pilot bearing?
chuck
I don't see how that could affect clutch release. Maybe not lubing up the splines of the input shaft, and the disc binds, but not the pilot bearing.

Please explain how this would cause a slipping clutch.
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Old Aug 3, 2002 | 12:05 AM
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Yeah i think the pilot is more for getting INTO gear.
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Old Aug 3, 2002 | 01:58 AM
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It's your flywheel dude.
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Old Aug 3, 2002 | 09:51 AM
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Thnx angel thats what I thought. Phew.
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Old Aug 3, 2002 | 03:50 PM
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About the pilot bearing. A few years ago a customer came in complaining about his clutch slipping under load. He had the clutch replaced a year ealier at another shop. We looked over his bill and noticed the other shop did not replace the pilot bearing. After removing the trans the clutch looked ok but the pilot bearing was trashed. We replaced just the bearing and his car was ok.
I once replaced a motor in a toyota truck and forgot to install the pilot bearing. The clutch slipped. It was automatic motor i was installing in a standard car.

The pilot bearing holds the output shaft strait. keeping the balance correct. Imagine how hard it would be to stop something from rotating that was out of balance. The out put shaft bearing can not hold the shaft strait. Most Front wheel cars do not have a pilot bearing but the out put shaft is much shorter then a rear wheel drive trans. If i am not right about this, please correct.
This forum has given me allot of good information.

I asked about the bearing because I have seen so many clutch jobs done with out replacing the bearing. Allot of kits do not come with one.
I am likely to be very wrong but it is something that has happen to me.
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