azander

I have a 996 GT3 pressure plate and a 993 pedal box. All in all, it's a brutal setup. Fine on the track but heading home with the fatigue - stall, stall, stall. I have a neuropathy, basically no functional muscles from the knee down which doesn't help. I was fortunate enough to get in touch with a local 993 owner who also has the GT3 clutch and the MPL slave. Still heavier than a stock euro RS though, but the MPL slave certainly takes the edge off. I'm looking forward to installing one soon. MPL is producing a new batch as we speak.

jpar

Now that you brought this topic up, my stiff pedal is really bothering me again. My car is an early 91 , so I have the early pedal setup. I just went through the pedal diagram on PET and I found that the 92- and turbo setup are identical except for the "clutch power spring" The funny thing is the turbo part 965 423 551 02 lists for around $105, the regular one 964 423 551 02 only list for around $19.
I really wonder how much of a difference that spring could make. My other question is, is it worth it for me to upgrade to the 92- parts? With all the parts and bushings to rebuild everything, I'm looking at about $260 my cost.

Also, for some reason, the 3.6 turbo has a completely different pedal cluster, with almost every part being 3.6 turbo specific. Anyone have any idea why?

axl911

I just spent the last 2 hours scraping and cutting my arms installing the MPL slave cylinder. Indeed it does work as advertised. I have a 993 with the LTW flywheel and RS clutch. That thing is stiff. I swear the MPL slave reduce the effort > 30%. It is light and smooth like a stock clutch.

And yes, the slave I took out was new. Replaced it about a year ago.

Thanks Gus for the MPL . My old and creaking left knee also thank you.

axl911

BTW....Clutch engagement is moved toward the bottom of the pedal travel. This makes sense as the slave is larger and would require more displacement from the master.

My clutch used to engage about halfway with the stock. Now it is at about 75-80% of the pedal travel.

robt964

No indication of price on their website. Would you mind saying how much they listed it for?

koenig_roland

got my car back from the workshop today.

RS flywheel, 996GT3 Sport Clutchdisc and 996TT pressure plate. All bearings refeshed with the clutch - 20k km ago. Fork was bent now, clutch was a little bit hard to press and had horrible judder. With the new fork, the engagement is super sweet and easy. Total different feeling... But i lost my shart bite-point, it is now drivable, like a "normal" car...

2 oil cooler, RS-Fan hub and some other minor topics were also done... season opening trackday can begin... :-)

ramans

I had the MPL Slave installed by a local shop yesterday, my only regret was that I didn't do it a while ago, my car has the Andial mid-weight racing clutch in it and was super annoying when stuck in traffic (I doubt I'd notice it if this was a track car mostly). The MPL has made it so that it'll be much easier to drive daily.

HiWind

great thread - thanks for all the concise and detailed post on the slave and other clutch/pp options ... Gus did you sell that MPL slave?

Black_Hat

Anthony,

will the MPL clutch slave fit a 91 C2 turbo ?

I have a sachs G2 PP and it is heavy

cobalt

I wish I had the answer for you. I am not sure what the difference is between the 95011623712 G50/01/02/03 Cylinder vs the 95011623750 for the G50/52. I have not removed the unit from my turbo to inspect it. I can only assume they used a larger unit for the turbo to reduce the pressure of the heavier pressure plate used on the turbo. I would contact the seller and see what they have to say.

Metal Guru

Ahh, no.
I tried it. I'm actually not sure what the issue was aside from the horrible scraping noise the car made when the clutch was engaged
My working theory is a 3-5 mm spacer between the slave and mounting point might have helped.
I also have heard a rumor that a 996 TT GT2 slave spaced out a similar distance will work.
I plan on trying this out here shortly this spring.

cobalt

Paul,

Any chance you have photos or measurements of the G50/52 unit for comparison? I recall the GT2 having a relatively light clutch pedal feel. Sounds like the internals were the same but uses a different casting to space it out?

JasonAndreas

When the pedal was pushed down to the floorboard or at the rest position?

Metal Guru

At rest.

Metal Guru

I recall that the MPL had 5 mm more stroke than the stock slave.
After sketching out how the clutch works, I think what matters is where the rod end is in relation to the fork at rest. If that position is too far forward, the clutch will not fully disengage. A spacer would fix that. Of course, you need enough stroke to pull the t/o bearing back also.
What did the factory use on the competition cars?
I had GT2 slave but sent it back, having not analyzed it. It is made of nylon but mounts the same way as the stock piece. It's also a lot cheaper than the MPL ($110 at Pelican). I need to buy another one and get started on the project.