Resurfacing Pressure Plate

[CELison]

Has anyone resurfaced an oem s4 or rs4 pp? I plan on using the rs4 pp from my Vast clutch with a new 6 puck disk and TTV FW. I don't want to buy a new pp if I don't have to.

Thanks boys and girls.

[ianwpb]

I'm also interested in knowing if this is something that can be done.

I currently have a FX400 on a stock (possibly failing) DMFW. I have a TTV Flywheel sitting in my garage. If I get another 6 puck disc will I need to do anything to the pressure plate? What about moving from a 6 puck to 8 pad from CM?

[zillarob]

I think it is tough because they have to rig up some way to hold the friction plate steady while they cut it.
Ive have a south bend resurfaced before, but never an oem. Pretty much just need to find a decent machinist that is willing to do it. Not sure what they would charge (my guess ~100) but might be close to just buying a b7 rs4 rep set.

[CELison]

I design surgical instruments for a living and we have a badass machine shop in our building. I can 3D print something to hold it, just not sure the best way to do it. I could have them throw it on one of our 5 Axis DMGs and hold it firm, then just have the tooling do the work. Wouldn't have to rotate the pp.

[NOTORIOUS VR]

Has anyone resurfaced an oem s4 or rs4 pp? I plan on using the rs4 pp from my Vast clutch with a new 6 puck disk and TTV FW. I don't want to buy a new pp if I don't have to.

Thanks boys and girls.

There are machine shops that can do it correctly. Not all can.

Of course you better make sure your DMFW is still good before spending money on it.

[martin0079]

Unless there is a noticeable lip that needs to be machined away I would just use this guy.

http://www.brushresearch.com/brushes.php?c1=6

[CELison]

There are machine shops that can do it correctly. Not all can.

Of course you better make sure your DMFW is still good before spending money on it.

I have a new ttv fw

[NOTORIOUS VR]

I have a new ttv fw

Derp... for some reason I continued to think you were resurfacing the OEM FW.

for the PP, be careful about the SAC mechanism!

[CELison]

Derp... for some reason I continued to think you were resurfacing the OEM FW.

for the PP, be careful about the SAC mechanism!

You mean breaking the plastic tabs the springs ride on? Or just resetting it?

[redline380]

Pressure plates generally do not get resurfaced. As others have noted, it is tough to get the PP to hold still. Buy new or simply reuse.

[CELison]

I'll probably get the flex hone for rotors and flywheels and use that.

[Monty23]

South bend will do the work for you, not sure if its worth the shipping cost/time/hassle though.

[wbrunner23]

Also consider step height - I guess the SAC mechanism could pick up the slack.

Personally, I would get a new PP. Weak plastic SAC on B5 PP plus you're building for more power. Motor pulls are not that bad and you've got experience there, but even if you could R&R in 1 day, you need to consider the value of your time.

[CELison]

SAC mechanism will take care of the step height. I plan on just hitting it quick with the flex hone. My clutch set up is OEM RS4 PP/ 6 puck disk/ TTV FW. That should hold the power fine. Motor is already out of the car and has been for some time. I just don't feel like buying a new PP if I can referb this one.

[Monty23]

SAC mechanism will take care of the step height. I plan on just hitting it quick with the flex hone. My clutch set up is OEM RS4 PP/ 6 puck disk/ TTV FW. That should hold the power fine. Motor is already out of the car and has been for some time. I just don't feel like buying a new PP if I can referb this one.

FYI, I really doubt that clutch will hold during aggressive NLS if you have that in mind while running alky cocktail.

[CELison]

FYI, I really doubt that clutch will hold during aggressive NLS if you have that in mind while running alky cocktail.

I don't have that in mind no. I never used NLS

[zillarob]

SAC mechanism will take care of the step height. I plan on just hitting it quick with the flex hone. My clutch set up is OEM RS4 PP/ 6 puck disk/ TTV FW. That should hold the power fine. Motor is already out of the car and has been for some time. I just don't feel like buying a new PP if I can referb this one.

Luk b7rs4 repset from ra for $137. Prob bolt on and go with that fw and disk, but I would cycle it in the press to make sure.
Ive got a pp here if you want to swing by and mock it up to see what it looks like.

[CELison]

Luk b7rs4 repset from ra for $137. Prob bolt on and go with that fw and disk, but I would cycle it in the press to make sure.
Ive got a pp here if you want to swing by and mock it up to see what it looks like.

I might just take you up on that.

[zillarob]

Shoot me a pm if you want. Right off the tp in Morgantown.

[CELison]

Shoot me a pm if you want. Right off the tp in Morgantown.

The B7 PP just needs the bolt holes drilled to work with a B5 s4/rs4 FW pattern? Want to just put my whole car together?? haha.

[zillarob]

With that fw and disk, good chance that is all it needs

[slow ride]

Just the 3 dowel pin holes, well that or drill the flywheel for larger pins, etc. Not sure if the b5 TTV flywheel for the standard b5 clutch needs some of the pad removed or not due to the pressure plate having a rivet location causing some interference. I just got done putting the b7 rs4 plate on a stock flywheel using 2mm spacer washers. I don't expect any issues.

[CELison]

Rob, Can I come by with my FW and mock up that b7 pp? I'll just grab one off rock auto if everything goes together fine.

Edit: for 135 bucks I just bought the LUK b7 rs4 clutch kit.

[zillarob]

Ya, for 137 its pretty much a no brainer

Ill be down in ac for a race this weekend, but any other time is good.
I should have everything we need, except the beer

[CELison]

I'll have the B7 PP soon so I'll be able to mock it up in my garage. Seems easy enough. Now if you want to put the whole car together I'll buy you a truck load of beer like smokey and the bandit. This car needs to run again. I miss it.

[MyXbfS4]

This car needs to run again. I miss it.

this kinda brought a tear to my eyesince it'll be a while before I get mine back. I'm super excited to see your car in action. your build thread is one of the first threads I sub'd after joining AZ so its awesome to see you didnt give up on it

[MetalMan]

In case it helps, I went through some of the B7 RS4 PP fun on my A4 (which uses a FW compatible with S4 clutches, like your TTV flywheel). Granted I also used the B7 RS4 clutch disk, but similar principles apply. zillarob was a huge help to me too.

http://www.audizine.com/forum/showth...1#post11277600

[CELison]

I'm probably going to bring my FW and clutch over (he's local) just to have another set of eyes on it. I'm a little rusty, haven't worked on a b5 in over a year.

[Scotty@Advanced]

i spoke with Southbend about this and they actually remove the friction surface, resurface it and then replace the pressure spring as part of their rebuilds. They said they won't just resurface a pp normally as the spring pressure degrades over time.

[zillarob]

Thanks for checking Scotty

The one I sent in was a stg3e so still looked pretty much new because of the kevlar.
I wondered why they even cut it, but the spring thing makes sense.

[01Noggy]

+1 for southbend. I took a trip down to their shop and everyone was awesome. Gave me and a buddy a tour of the building and everything. Somehow I ended up with a custom clutch kit for my build but they also resurfaced my oem DM and rs4 PP


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[CELison]

I ended up buying a b7 rs4 pp. Going to Rob's tomorrow to mock it up with my disk and fw combo.

[WESLIFE]

If you don't know what you are doing when trying to put this combination together, you will end up taking your transmission down more than once until you get everything situated. "Food for thought".

Also, why would anyone buy a factory b6 s4/b7 rs4 factory 2200 lb clamp load pressure plate for a bult car, when everyone knows that jhm and ACT has a 3100 lb clamp load pressure. Plate on the market for the b6 s4. But I'm sure you already knew this!

[Wagonholic]

^The ironic part about the most recent post is that JHM and AMD both use a B7 RS4 pressure plate in their clutch kit. The exact same thing the OP got for $137. Only difference is the disk but that can be easily solved.

Plus I'm pretty sure Jesse and Rob know what they're doing as well. But what do I know ;)

[zillarob]

Lol, I did such a good job on mine I had to do it twice.
I used a b5 disk and found out the hard way it needs a little grinder love to work with the newer style pp

Mine is jhm fw, rockauto b7rs4 pp, and homebrew jhm stg4 disk. Im stoked on how it drives and seems to be holding up.

We will mock Jesse's up and cycle it in the press to make sure it is good.
I like to set them so the sac just barely clicks with a full stroke so I know it isnt too tight, and also not wasting a bunch of the sac range of adjustment.

[Royal769sr]

Just the 3 dowel pin holes, well that or drill the flywheel for larger pins, etc. Not sure if the b5 TTV flywheel for the standard b5 clutch needs some of the pad removed or not due to the pressure plate having a rivet location causing some interference. I just got done putting the b7 rs4 plate on a stock flywheel using 2mm spacer washers. I don't expect any issues.

Nice . I think I will try this

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[Monty23]

^The ironic part about the most recent post is that JHM and AMD both use a B7 RS4 pressure plate in their clutch kit. The exact same thing the OP got for $137. Only difference is the disk but that can be easily solved.

Plus I'm pretty sure Jesse and Rob know what they're doing as well. But what do I know ;)

AMD says the B7 RS4 PP they use is modified for 3200 lbs clamp. That's quite a bit more than the stock PP.

[zillarob]

I dont know that jhm mods them, I cant see it anyway.

Amd changes the dowels and maybe cuts the friction plate so it works with b5 fw.
They also mod the lever points on the friction plate for more leverage.