C4S Suspension same as TT?
02-21-2010, 10:45 PM
#4
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02-22-2010, 08:36 AM
#5
Rocky Mountain High
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My understanding is that they are the same... but I don't know that for a fact.
02-22-2010, 10:48 AM
#6
Nordschleife Master
Simillar, but not the same. They are tuned to each models particular weight. The part numbers are also different for the turbo and the C4S, whether it is for the stock sport suspension or for the upgraded X73 aftermarket.
02-22-2010, 11:21 AM
#7
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The stock C4S rides on the M030 sports suspension. The upgrade to this as Palting said, is the X73. If you try to find the X73 online you have to look under the Turbo's suspension parts... but when you order... you specific you have a C4S and not a Turbo.
Fwiw.
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02-22-2010, 05:38 PM
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Do I need to do an update of your avatar pic, or do you still own the 996 and the Boxster as shown?
02-25-2010, 05:02 PM
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HI Tim!! I just occasionally lurk here now. Nice to see some of the old crowd keep active on Rennlist. Yup, still have the the two cars in the avatar, an avatar made by good friends 
02-25-2010, 08:49 PM
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According to the April '02 article in Excellence about the C4S:
"In lieu of the Turbo spring rates, Wahl (Porsche development engineer) selected coils 10% less stiff. They also have less pre-load to accommodate the C4S' lighter weight."
"..while the rear (sway) bar on the C4S is 1mm smaller than that of the Turbo. Also the walls of the rear anti roll bars on the C4S are thinner than those of the Turbo as well, at 2.8mm vs. 3.0mm. These changes add up to a 20% reduction in roll stiffness from the rear bar of the Turbo compared to that of the C4S."
"The rest of the actual hardware of the front and rear suspension- the links, longer rear axle control arms, bushings, motor mounts - is identical to that found in the Turbo."
Hope that helps.
"In lieu of the Turbo spring rates, Wahl (Porsche development engineer) selected coils 10% less stiff. They also have less pre-load to accommodate the C4S' lighter weight."
"..while the rear (sway) bar on the C4S is 1mm smaller than that of the Turbo. Also the walls of the rear anti roll bars on the C4S are thinner than those of the Turbo as well, at 2.8mm vs. 3.0mm. These changes add up to a 20% reduction in roll stiffness from the rear bar of the Turbo compared to that of the C4S."
"The rest of the actual hardware of the front and rear suspension- the links, longer rear axle control arms, bushings, motor mounts - is identical to that found in the Turbo."
Hope that helps.
