3000 rpm vibration and motor mount

[ekam]

They've always been able to send small parts thru USPS, if you ask. I wasn't sure about the motor mount due to its weight and size but they said ok even tho shipping cost wasn't cheap.

OR it may have something to do with me spending a fortune with them over the years, but those guys are great and they always know what I'm talking about (as supposed to my local dealer which I have to spend 10 mins just trying to explain them what I'm looking for, and they'll usually say they don't have it stock and I have to pick it up in a few days).

[clickman]

I did ask, but I'll certainly be asking again!

Without shipping costs, I'd save about $70 on the motor mount, not a biggie if I'm only buying one thing from Suncoast (distribute shipping cost).

But I just price-compared the water pump against my stealer, who wants $500 for the pump and gasket, vs $230 from Suncoast. Sheesh.

[coolbreeze551]

I also am having the same problem with my 2001 non-s. I hear a lot about the 987 upgrade. I am not sure if it is right for me. I do not track my car but I do have more of an "aggressive" driving style. There are a lot of threads on this subject but no real definitive answer that I can find. Can someone tell me if the 987 upgrade is better than an OEM replacement or is it not as clear cut as that?

[Dragonwind]

Yes a new motor mount will fix some of the vibration issues, but in many cases, including mine, it is not coming from the mount. I suspect it is time for a new flywheel but others have had that changed only still have the vibration. One person solved it (with repeated success) but adjusting the height of the exhaust. I'm not changing mine till later this year so I'll know for sure then.

Chris

[clickman]

Originally Posted by coolbreeze551

I also am having the same problem with my 2001 non-s. I hear a lot about the 987 upgrade. I am not sure if it is right for me. I do not track my car but I do have more of an "aggressive" driving style. There are a lot of threads on this subject but no real definitive answer that I can find. Can someone tell me if the 987 upgrade is better than an OEM replacement or is it not as clear cut as that?

I think the 987 part is the only one you can get now from Porsche, i.e. it is OEM. I know when I asked my stealer that was the part number he came up with.

[Brad Roberts]

Clickman is correct

ALL the Boxster mount numbers supercede to the 987 number.

My .02 I replaced my mount 15k ago with the 987 and am in need of another mount. I'm going with Pedro's race mount and try that. I do drive hard, lots of DE's so in my opinion the stock 987 doesn't cut it for me.

What tranny mounts do you have and where those checked to be good?

How is your blip throttle downshift?




B

[bilabonic]

I have the 3000rpm vibration and still have after replacing cracked mount with new 987 part one..

My gearstick also shoots forward/back a toc
uch on putting on/off gas ?

[mikstew]

The 3000 rpm vibration thing is kind of a myth. It has more to do with engine balancing than motor mounts. The real test is as follows:

put the car in second and drive @ 3000 rpms, constant speed.

Lift off and Blip the throttle.

Do you feel and hear a read end clunk? Not a click, tap, or noise. A Clear and OBVIOUS clunk feeling, and THUNK noise. IF you do, then your motor mount is toast, like mine!

I am also fairly certain this is the cause of terrible wheel hop. Once I replace mine, I'll update you.

As for the shifter moving back and forth upon engagement, a little bit of play is absolutely normal. Remember your drivetrain is connected to the body via rubber mounts, you're always going to feel play in anything that isnt absolutely fixed to the body. That's the point! Unless your shifter is moving so much you are stuggling to grab it (lol) I wouldn't worry.