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YOUR RESEARCH996 Turbo front end shaking??
Leading reported evidence
Replace right wheel bearing
Performed · outcome unconfirmed
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Performed · outcome unconfirmed · Original poster
I have installed new rotors and pads (all 4), had the wheels re-balanced, and replaced the right wheel bearing, which was in question.
Leading evidence: 'Replace right wheel bearing' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace right wheel bearing' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
Totally different car I know, but I've had to replace the thrust arm bushings on my M5 twice because of shaking during braking from high speeds.
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The front of my '03 996 Turbo shakes on the track, only after the car heats up a bit. It occurs mostly under heavy braking at the end of a straight, however, it also occurs intermittently at other times. Once in a while there will also be slight vibration while NOT on the brakes as well. I have installed new rotors and pads (all 4), had the wheels re-balanced, and replaced the right wheel bearing, which was in question. I have had both slicks and streets on it as well to determine if it was a wheel issue. It is much more pronounced with the slicks, but does occur with the street tires as well. I have asked numerous people in PCA who are pretty darn savvy, and everyone is scratching their heads. Any ideas??? I'm just about ready to lose my mind. Thanks!!
If the car has more than 30,000 miles on it or if it has any mods, it is shaking because the car is a high mileage piece of track garbage.
-Dock
Hey, I 'll give you $50,000 for it. Right now. No questions asked.
-Blswan
You don't say anything about the suspension setup, or whether you have checked everything suspension/steering related. Could be something related to the tie-rods or worn bushings in the upper/lower control arms. When you brake heavily, the mass of the car moves forward and puts a lot of stress on those components. FWIW
Totally different car I know, but I've had to replace the thrust arm bushings on my M5 twice because of shaking during braking from high speeds.
Because of the ease of replacement I went with new thrust arms rather than trying to install just the bushings.
I see there are several aftermarket replacements but you could go back with factory parts and see if that helps; assuming you haven't addressed the thrust arms already.
Here's one of the aftermarket options:
http://www.evoms.com/porsche_996_996.../ts-00-001.htm
I have the same problem. Power steering is overheating. From what I gather a flush of power steering fluid, steering cooler and lightweight under drive pulley will help. Also Id consider removing the fwd.
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