Boxster Autocross Sound

[charles5448]

Originally Posted by blue62

Sounds like the motor mount is shot.
Not to difficult to replace.
I had to drop my engine an inch or two to remove one or two of my bolts.
I also disconnected a coolant hose or two just to make things easier.
If you need guidance you have the forum.

Yes there are upgraded motor mounts available but I have read that they create a harshness in normal everyday driving.
And they are more costly

Something to keep in mind: (These are just my thoughts).
Anything made with a rubber component= the rubber in the part is most likely made in China. Most rubber products made in china don't seem to last. So if you go for an upgraded motor mount and the rubber component of the mount is made in China you have possibly gained a harshness to you ride but no gain in the useful life of the part. At a premium price.

Question: does your issue only arise during hard cornering in autocross conditions???? Or: does it arise during everyday normal driving (cornering) conditions as well?????

Only happens under hard cornering during an Autocross. Haven't been able to drive hard enough on the street. There was one section of the track a couple of weeks ago that was bumpy and after hitting it in the middle of a turn it started to make the noise/feeling. Now everytime I corner hard during the Autocross I get the same noise/feeling.

At first I was convinced the tires needed more air. Tried this and there was no change. My boxster has a TC button so I thought maybe that was the culprit but after doing a run with it off, nothing changed.

Jacked the car up today and gave the CV axles a good once over and didn't see or feel anything outside of the ordinary. Gave the wheels a good shake and didn't feel any slack and didn't hear while rotating the hub.

So it only makes the noise under hard cornering during the autocross. Sound and feeling is speed dependent (gets louder and harder with speed). It also doesn't seem to matter if I am turing left or right. No signs of anything rubbing underneath and the car drives GREAT when being street driven. I can shift freely through all the gears and the shifter doesn't have any slack or play in it.

Really at a loss for what it could be. Leaning toward motor mounts after seeing it in action today but thinking there might also be something else at play here.

[blue62]

I always like to go with the simple things first and work my way up from there.
I would check the torque on the torx bolts holding the axles to the drive plates at the transmission end.

I would replace the motor mount then see what happens at an autocross.
keep us posted.

[BYprodriver]

Originally Posted by charles5448

Only happens under hard cornering during an Autocross. Haven't been able to drive hard enough on the street. There was one section of the track a couple of weeks ago that was bumpy and after hitting it in the middle of a turn it started to make the noise/feeling. Now everytime I corner hard during the Autocross I get the same noise/feeling.

At first I was convinced the tires needed more air. Tried this and there was no change. My boxster has a TC button so I thought maybe that was the culprit but after doing a run with it off, nothing changed.

Jacked the car up today and gave the CV axles a good once over and didn't see or feel anything outside of the ordinary. Gave the wheels a good shake and didn't feel any slack and didn't hear while rotating the hub.

So it only makes the noise under hard cornering during the autocross. Sound and feeling is speed dependent (gets louder and harder with speed). It also doesn't seem to matter if I am turing left or right. No signs of anything rubbing underneath and the car drives GREAT when being street driven. I can shift freely through all the gears and the shifter doesn't have any slack or play in it.

Really at a loss for what it could be. Leaning toward motor mounts after seeing it in action today but thinking there might also be something else at play here.

I have a motor mount with a harder than stock bushing I was going to install for racing when mine wore out. I have stopped racing so it is for sale $170 shipped to East coast.