ZXR750 L model clutch leaf Spring

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ZXR750 L model clutch leaf Spring

Postby zxrmad » Tue Jul 12, 2016 5:11 pm

I posted this in my track bike build thread, but thought I might get more answers if I started a new thread...

Today I stripped the clutch on my L model ZXR750 track bike as it would slip almost as though it wasn't engaged at all. I found 2 problems...

1. The bearing in the outer plate that the push rod acts on was cocked and half way out. This was obviously holding the clutch partly disengaged all the time. I have no idea how this could have happened? I have never ridden this bike so I can only assume that a previous owner has installed it incorrectly, although I don't see how anybody could do it. Photos below

Image

Image

2. The leaf or finger Spring is broken. Photo below

Image

The parts manuals show a different leaf Spring and nut (different part # and the Spring looks different) for the '94 and '95 model to the '93. Mine has the '93 type leaf Spring in it. The parts diagram also shows 2 leaf springs for the later models not 1 like the '93.

Can anybody explain the difference? Or do I just put the late model springs and but in mine? Every other part number in the clutch is identical in all models.

I'm guessing the later model Spring was an update to a better part?

Thanks
Brian
Current bikes... '93 ZXR750R M1, '95 ZXR750 L3, '95 ZXR750 track bike, '96 Bimota sb6, '99 Bimota db4, '08 Honda VTX1800, '94 Honda CB250, '00 Honda XR200, CBR400rr race bike, '49 BSA C10 250.
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Re: ZXR750 L model clutch leaf Spring

Postby greenman43 » Tue Jul 12, 2016 5:37 pm

I don't know a lot about slipper clutch setup, but the additional spring on the later bikes (more weight!) suggests someone decided that perhaps the earlier bikes didn't have enough engine braking.

Cheers,
Brian
07 ZX10R track 09 ZX6R road/track 93 ZXR750 race 89 GPZ900 project
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Re: ZXR750 L model clutch leaf Spring

Postby zxrmad » Tue Jul 12, 2016 5:56 pm

The later Spring looks to be a different shape too by the look of the parts diagram. The Spring in the box at the bottom of the diagram is the '93 and the main diagram is the later ones

Image

Ive ordered the later springs and nut.
Current bikes... '93 ZXR750R M1, '95 ZXR750 L3, '95 ZXR750 track bike, '96 Bimota sb6, '99 Bimota db4, '08 Honda VTX1800, '94 Honda CB250, '00 Honda XR200, CBR400rr race bike, '49 BSA C10 250.
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