[tamathumper]

Do I need to worry about these differences? Here are pictures of the removed clutch and flywheel - the pressure plate is "alternate" but correct per the PET, and "heavy duty" per AutoAtlanta, part # 964.116.028.00.











The replacement is a Sachs unit with a blue stripe, and at least according to the workshop manual, the blue stripe (on the original part) is for the 911 Carrera 2/4, and green is for the 968. Should I be concerned?

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[flash]

yes, you should be concerned, if you are seeking original fitment and pressure.



the blue stripe is stiffer. this will provide more clamping force, but will dramatically change your pedal feel. it will also subject the firewall to more stress.



i'll dig up the pressure specs today.

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[flash]

the original part number is 964.116.027.90 and is somewhere around 2400lbs



the alternative replacement part number 964.116.027.01 is NLA

the alternative replacement part number 964.116.028.00 is NLA

964.116.028.90 is for the 964 C2/C4 (pretty sure it's 2600lbs)

964.116.028.91 is for the 3.3 turbo (3100-3300lbs)

964.116.028.53 is for the 3.6 turbo (pretty sure it's 3700lbs)



while the pressure rating of the C2/C4 plate isn't much higher than ours, the geometry of the springs is different, and combined with the higher rating, results in a "ramp" feel in the pedal.

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[tamathumper]

Maybe I'll just have mine resurfaced instead of the replacement, there's probably nothing really wrong with it - it was the <acronym title='dual mass flywheel'>DMF</acronym> I suspected and I don't think there's anything really wrong with *that* either.

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[tamathumper]

I wonder if the blue stripe means something different on the Sachs unit,... According to a thread on that other forum, this Sachs unit is about 2,500 pounds and is also a factory standard unit (and I did buy it from a 968)... There is also a reference to this part number with a green stripe on it instead of blue - damn the Internet.



Replace "rl" with you-know-what if interested.



http://forums.rl.com/rennforums/968-forum/419540-heavy-clutch-and-firewall-flex-x-post-from-968-forums.html

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[flash]

it really depends on what you can tolerate in pedal feel. there are a LOT of cars with the plate you are talking about. many people just deal with it. i found it hard to tell where you were in the stroke, because of the "ramp" effect.



the firewall brace will mitigate the added stress on the firewall issue, if you can deal with the other problems of the blue stripe plate



that being said, i have the 3200 plate in my car, and i love it. others find it too stiff. it does have a nice progressive engagement like the OEM plate though. however, i would not want to use my plate if it were a car that had to be in traffic, as it is just too hard on the leg. i have gotten cramps when sitting in traffic on way too many occasions.

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[Cloud9...68]

Flash is correct. The correct replacement clutch has a green stripe. I ordered mine from RS Barn, and it does in fact have a green stripe. Interestingly, the one I pulled out of my car, which I thought was original, had a blue stripe, so it must have been replaced at one time. I'm looking forward to experiencing the "original" feel to the clutch, especially after replacing the fork needle bearings and fork shaft, in addition to the clutch slave cylinder and braided high pressure line a few years ago.

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[flash]

as a reference, my plate is sachs# 3082.213.132



green is the softest. blue is a bit stiffer and has different feel. no mark is stiffer still (mine). red is stupid stiff.

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[tamathumper]

Interestingly, the one I pulled out of my car, which I thought was original, had a blue stripe, so it must have been replaced at one time.

This replacement is a pull from a low-mileage car, and is also a blue stripe...

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[flash]

yeah- it's pretty common. there were a few years between vendors substituting the part and us discovering the difference.

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[tamathumper]

The machine shop inspected both setups and said the original one was moderately scored with a few heat spots on it, but they weren't quite sure how to machine it given the circumferential groove around the outer perimeter of the flywheel brake surface. Given the good condition of the replacement unit, they felt I should just scuff and clean it up and use that, so I'm opting for that and I'll have to see how it feels at the pedal. Hopefully the firewall brace will be here someday soon and I won't have to worry about any additional pedal stiffness anyway.



With that being settled, it occurs to me that I removed my flywheel from the engine without noting its position relative to <acronym title='top dead center'>TDC</acronym>, and now I have no idea what orientation to put the new on one at, unless there's a keyway (I'm not out in the shop to check)...

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[Cloud9...68]

There's an alignment pin, so no worries.

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[flash]

the firewall brace won't help the stiff pedal or the "ramp" issue. it will only hold the firewall still.



why don't you just buy the right pressure plate?

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[tamathumper]

Oh, about 700 reasons if this one is appropriate.

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[flash]

lol - ah - well, aren't you going to spend that doing it twice? last time i checked it wasn't that expensive, though it wasn't cheap. i think sunset had it for a bit over $400

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[tamathumper]

Still reading and researching, but don't forget I just dropped a lot of clams for braces, trinkets and go-fast goodies a couple weeks back...



From what I can tell, the Sachs unit, part number 3032.125.199 is a factory-supplied unit,... so it is an appropriate part for the car. There is no definitive answer on what the clamping force of the Sachs unit with the blue stripe actually is (at least not that I can find). The one I took out of the car has no color on it at all...



I'll probably put this one in the car, and have the other unit resurfaced as a "spare" or as something to put back in the car if I don't like the Sachs unit.

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[Cloud9...68]

As I mentioned above, I had the one with the blue stripe in my car, and I can't say the pedal pressure was excessive, as many others have reported. Hopefully this will be your experience as well.



By the way, and I hate it when people do what I'm about to do to you, but did you replace the needle bearings in the clutch fork, and the shaft the fork rides on? My shaft was badly scored by the needle bearings.

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[gbarrier]

That blue stripe unit feels like stepping on a potato with no real feel to it at all. Miserable to drive. When I bought my current 968 the <acronym title='previous owner'>PO</acronym> had just installed the blue stripe plate and new Sach disc. It was not comfortable. I removed the pressure plate with less than a thousand miles on it and installed the green one. Just feels quite comfortable. The accompanying disc that comes with the blue stripe plate as a Sach kit is OK but the plate sucks.

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[tamathumper]

[quote name='Cloud9...68' timestamp='1334798478' post='125584']As I mentioned above, I had the one with the blue stripe in my car, and I can't say the pedal pressure was excessive, as many others have reported. Hopefully this will be your experience as well.



By the way, and I hate it when people do what I'm about to do to you, but did you replace the needle bearings in the clutch fork, and the shaft the fork rides on? My shaft was badly scored by the needle bearings.[/quote]



New needle bearings on hand, and new shaft on the way, as the original was scored (pic above).



@all, ok, ok, will call Sunset later today and order a green stripe unit.

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[MB968]

I have a clearification question. I thought the original Sachs part number was 3082-213-131, and that it was no longer available from Sachs (or Sunset). Thus, at one point in time Porsche Repair Kit Part # 968-116-911-00 starting suppling the repair kit with Sachs part number 3082-213-133 (which is what Tamathumper has), since the -131 part was no longer available from Sachs. And it was only recently that RS Barn started working with an Italian supplier to manufacture a -131 equivalent part. Is RS Barn still the only suppler of the equivalent 3082 213 131, or can you now source that from Porsche too?

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