Implications of running clutch plate smaller than fly & pressure

[TurboRA28]

Hi all, I wanted to find out what the implications are of running a clutch plate that is 10mm smaller in diameter than what was designed for the particular flywheel and pressure plate?

The clutch plate will be in complete contact with the flywheel & pressure plate face. But there will be 5mm or so of 'unused' surface around the outside of the plate.

I would like to run this plate as it's good and it's free.

Thanks
Joel

[CELICASUPRA7M]

go for gold i say.

[Sam_Q]

well all I can see happening is the potential for the pressure plate to develop a ridge over time. I theory this could be an issue if you where going back to the ideal friction plate size but I seriously doubt it could ever wear enough for this to any real world effect, and besides you would just fit a new pressure platee with the new clutch. So I am with supraman above

[RAAAH23]

The sayin goes nothings ever free.

Theres two things i can think of. You will need to replace it earlier and the flywheel will definatly need to be machined for the reason Sam stated above. I know its best to get the flywheel machined everytime you change your clutch but sometimes if the monies are tight you can get away without it. But if i was in your situation id do it.

[TurboRA28]

Goodo that is what I like to hear..
I could always get the step in the flywheel machined to the size of the clutch disc but probably not worth it.
Also, can you machine a pressure plate surface?
I am annoyed as brand new $500 clutch/pressure plate and i've had too much preload on the hydraulic clutch slave and clutch done a few thousand km but developed hotspots on the pressure plate.
Would like to machine it as was custom built job.

[Cuzzo]

Ive been told by a clutch place you cant machine the pressure plate. Not sure if that was from a couldnt be bothered point of view or safety.