did a quick search and couldn't find an answer.

just wondering if this is even ever done?

or does everyone just get new PPs w/ thier clutch discs?

 

I think for the cash, I'd rather just get a new PP.

I always replace the PP and resurface the flywheel.

 

new p.p. with disc. i even recommend a new flywheel, but some people don't have it like that, so resurfacing the flywheel is good.

 

i usually get a complete clutch kit.

the problem is i'm tryin to salvage my ACT PP thats no more than 10k on it, but rid of the Street Disc. as for the flywheel, i have the CM and will be replacing the insert.

the main question is, do people get PP resurfaced, is it possible, and is there any downside to doing so?

 

I'm sure it can be done; I think I've actually heard of it being done on older cars. Usually you wanna replace the PP b/c the cost is pretty close and you don't wanna risk a spring breaking due to wear, but on an expensive PP you may give resurfacing a try. Look at it; it's got a nice thick contact patch for a reason.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LudeyKrus &raquo;</TD></TR><TR><TD CLASS="quote">Look at it; it's got a nice thick contact patch for a reason.</TD></TR></TABLE>

thats exactly what led to this thread. i was suprised not to find anything on this when i did a search. does everyone just ditch the pp for a completely new kit? and what of the people who buy used PP/DISC from others? do they install it directly without resurfacing the PP? i hear of FLYWHEELs being resurfaced constantly, why don't people resurface PPs?

 

A PP should not need to be resurfaced unless something drastic happens to it. If it gets really hot or the clutch disk comes apart, it may warp some, the surface may get glazed, or the disintegrated clutch disc could damage the surface of the PP. Otherwise, I wouldn't worry w/ resurfacing the PP.

The flywheel is much bigger and easier to wear unevenly, I believe.

 

THANKS ALOT

 

I'm one that have tried to get a pp resurfaced. The machine shops either laughed at me or yelled at me...in the end it never got resurfaced.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FLIP2daMaX &raquo;</TD></TR><TR><TD CLASS="quote">did a quick search and couldn't find an answer.

just wondering if this is even ever done?

or does everyone just get new PPs w/ thier clutch discs?</TD></TR></TABLE>It certainly can be done but hard to get done right. We are not in the business of rebuilding clutches but have the equipment to do so. Many times the pressure plates can be reused even without resurfacing but they should be tested first. Testing is usually a free service we offer (we have a charge listed, but seldom charge it). The only parts that really wear on the pressure plate are:
- The diahpragm finger tips where the release bearing makes contact
- The fulcrum points of the pivot wires and casting
- The surface of the casting that makes contact with the disc

Obviously there are more things that can go wrong or parts that get damaged, but these are the wear items. The contact face is the only resurfaceable part. It may look ugly or have heat/hard spots, but as long as it is not warped, cracked or grooved or have high spots, the looks don't matter (comparable to a brake rotor). All resurfacing does is make it look pretty and make it flat again. The problem is that the pressure plate needs to be taken apart, reassembled (and balanced) to perform the resurfacing properly. Diaphragms don't usually fatigue and break, and even it they do we generally replace them no charge.

 

just the answer i was looking for.... THANKS

"glad i emailed that guy..."

 

One of the big problems with resurfacing the pressure plate is that removal of material would in effect reduce spring tension. This would reduce clutch grip. And the only way to remedy this problem would be to also replace the diaphram spring. And once you do this (in addition to resurfacing), you are starting to get up there money-wise. It is therefore better to replace rather than repair.

I should note that this problem is taken care of when resurfacing a flywheel by also taking off the same amount of material from the pressure plate mounting surface. But this cannot be done on a pressure plate since its mounting surface is a relatively thin, stamped steel piece.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StorminMatt &raquo;</TD></TR><TR><TD CLASS="quote">One of the big problems with resurfacing the pressure plate is that removal of material would in effect reduce spring tension. This would reduce clutch grip. And the only way to remedy this problem would be to also replace the diaphram spring...</TD></TR></TABLE>No big problem at all. A diaphragm spring doesn't act like a coil spring where the load is linear. Actually with a new pressure plate and disc the spring is beyond it's peak load position. It goes "overcenter" in the load curve. As the disc wears and the diaphragm gets closer to the relaxed position, the clamp load first increases and then decreases before it finally decreases to a point where it doesn't hold. To take off .010" for instance actually puts the spring in a range where it produces more clamp load (with a new disc) and therefore increases grip. All the .010" cut would do is shorten the life slightly and is just like having a disc that is worn .010". With our pressure plates the working range of the springs allows for more wear than stock so we have room to spare. A new diaphragm spring wouldn't make a difference unless it was stronger than the used one.