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YOUR RESEARCHCorrect Clutch?
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Use same clutch
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Performed · outcome unconfirmed · Original poster
But now I see they used the same clutch on the Boxster S from 2000 to 2004 so it can't be the engine hp.
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Performed · outcome unconfirmed · Original poster
I am guessing one was just a lot more used than the other.
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I am putting a 2002 transmission in my 1999 996 c2.
The clutches are listed as fitting 99-01 and 02-04. (pressure plate is only part different in kit)
Do I need to order a clutch for the 99 or the 02?
What I have found out so far makes no sense. There are 2 different part numbers but can't find a reason for it.
Flywheel is the same for both years
Throw out bearing is the same
Slave cylinder is the same
Clutch release lever is the same
clutch disc is the same
If it were to have a LSD transmission, '99 and 02 would both have the same transmission, flywheel and other parts I mentioned. Only the pressure plate is different.
The place I am getting the transmission from compared the 02 clutch to a 99 clutch and said it looks like the prongs on the pressure plate stick up a little higher. Otherwise no visual difference. I am guessing one was just a lot more used than the other.
No one has any ideas? What do people use when they put a 3.6l engine in an '01 or older car?
I emailed Sachs about it and got this reply:
After viewing both clutch kits they are identicle with the exception of the pressure plate. I don't have any technical information regarding clamp loads but I do know the '02 911 had a little bit more power so the difference could be in the clamp load. The bolt patterns appear to the same but I am only looking at pictures. The other thing to look into is the stack up height. I really can't tell you which will work best for you because we catalog our kits to OE specifications. Therefore, we don't have a lot of technical data because it is assumed we are selling OE replacements and not modified applications.
This is something you will need to look at closely to determine which clutch you will need based on the things I mentioned above.
The more I search the more confused I get.
The only real I could find was the extra horsepower of the 2002 engine so I was thinking the only difference was the clamping force as suggested by Sachs.
But now I see they used the same clutch on the Boxster S from 2000 to 2004 so it can't be the engine hp.
The release bearing has a different part number as well.
If everything else is the same, I'm thinking you'd just need to match the release bearing and pressure plate.
Do you happen to now the reason for the difference? The only thing I can think of is the crankshaft surface compared to the bell housing being different. Does that even make sense?
If that is the case I will need the clutch for the 99. If there is another reason for the height difference, I will may need the 02 clutch.
I hope I need the earlier style since I just found such a good deal on it.
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