10-16-2009, 06:07 PM
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#1
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Registered User
Join Date: Jan 2008
Location: Clarksville, Tn
Posts: 339
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What constitutes a bad engine mount?
How do you know if its going bad? Thanks for your responses! Jon
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'13 S - Guards Red / Luxor Beige - Options - Loaded to the Hilt!!
'01 S - Guards Red / Beige - Surrendered - 04.18.12
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10-16-2009, 06:25 PM
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#2
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Registered User
Join Date: May 2009
Location: spartanburg sc
Posts: 4
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overly sloppy shifting and clunking noise when releasing clutch. for me. replaced with 987 model for free through dealer. kinda like a worn out universal joint or rear diff type problem. all is silky smooth now.
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10-16-2009, 06:48 PM
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#3
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Engine Surgeon
Join Date: Aug 2008
Location: Cleveland GA USA
Posts: 2,425
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I haven't seen one last more thjan 40K yet.. If the car has more than 30K more than likely it is bad and will have the symptoms listed earlier in the thread.
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10-16-2009, 07:04 PM
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#4
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Registered User
Join Date: Jan 2008
Location: Clarksville, Tn
Posts: 339
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I have 18500 on the clock now. When I update ims bearing should I update this too?
What product should I purchase when I do? I plan on keeping my car for a long time and want to do it right.
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'13 S - Guards Red / Luxor Beige - Options - Loaded to the Hilt!!
'01 S - Guards Red / Beige - Surrendered - 04.18.12
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10-16-2009, 07:36 PM
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#5
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Engine Surgeon
Join Date: Aug 2008
Location: Cleveland GA USA
Posts: 2,425
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The engine mount is opposite the end of the engine that houses the IMS bearing..
No need to do both of them at once unless you want to...
Drive that car.
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10-16-2009, 09:04 PM
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#6
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Registered User
Join Date: Oct 2008
Location: San Diego
Posts: 434
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Significant fore/aft movement of the shifter when it's in gear depending on whether you're accelerating or not is in my opinion an indicator of a bad mount.
Accelerate to 50 or 60, leaving the car in third gear, foot off the clutch. With your hand resting on the shifter, depress the accelerator (a good amount - say 80%), then roll back off the gas. Repeat a few times.
On my (bad) OEM mount, the shifter would move fore and aft a significant amount, but I initially chalked it up as a Boxster idiosyncrasy.
Since replacing with the Pedro mount, there is absolutely no perceptible movement.
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1999 Carrera 4 • Aero kit • 4" UD Pulley
My Corvette doesn't leak oil... it sweats horsepower.
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10-17-2009, 05:11 AM
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#7
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Registered User
Join Date: Jan 2008
Location: Clarksville, Tn
Posts: 339
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Quote:
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Originally Posted by Jake Raby
The engine mount is opposite the end of the engine that houses the IMS bearing..
No need to do both of them at once unless you want to...
Drive that car.
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Really wish I had more time too drive it. The world of architecture keeps me busy. Add family on top of that and its really hard. Wife wants me to get a 911 to "share" more family time with my two daughters... I will eventually but want to keep the 986 as i just love the design.
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'13 S - Guards Red / Luxor Beige - Options - Loaded to the Hilt!!
'01 S - Guards Red / Beige - Surrendered - 04.18.12
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10-17-2009, 11:28 AM
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#8
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Registered User
Join Date: Jan 2009
Location: Arvada, CO
Posts: 229
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Quote:
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Originally Posted by Jake Raby
Drive that car.
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+1.
Seriously, drive that car!
An '01 with 18k miles on it?
Get in it and drive.
BC.
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Its not how fast you go, or how expensive your toys are.
Its all about how big your smile is at the end of the day that truly matters.
'98 Silver Boxster, '08 Ducati 848, '89 Honda Hawk GT, '89 Honda Pacific Coast
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10-19-2009, 11:25 AM
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#9
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Registered User
Join Date: Jun 2006
Location: San Diego
Posts: 162
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Also an increasingly obvious resonant vibe as you decelerate through 3000 rpm-that's what mine exhibited, and was completely torn when yanked at 45K.
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10-20-2009, 06:25 AM
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#10
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Registered User
Join Date: Aug 2009
Location: Music City U.S.A.
Posts: 166
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Sloppy shifting, check.
Clunking noise, check.
Since I will be changing out my spark plugs in the up and coming week I am now going to be conducting an engine mount swap as well. I understand there are two mounts in the rear and one in the front. Would I swap out all three?
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2003 Porsche Boxster S 3.2L l AASCO Lightweight Flywheel l FVD Brombacher ECU l FVD Brombacher 100 Cell Sport Catalytics l FVD Brombacher Sport Headers l GiroDisc 340mm FR Rotors l IPD Intake Plenum l Litronics l KW Variant 3 Coilovers l Porsche 997 75mm Throttle Body l Road Sport Supply Underdrive Pulley Kit l Sachs Stage 2 Racing Clutch Kit l TechArt Short Shift Kit l TechArt Power Flow Kit l TechArt Sport Exhaust.
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10-20-2009, 08:34 AM
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#11
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Registered User
Join Date: Apr 2009
Location: SF Bay Area
Posts: 247
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I only did the front mount and that took care of the sloppy shifting/clunking. Its my understanding that the tranny mounts are gel and less likely to need replacing. The front one made all the difference for me.
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10-21-2009, 05:34 PM
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#12
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Registered User
Join Date: Aug 2009
Location: Music City U.S.A.
Posts: 166
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Quote:
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Originally Posted by manolo
I only did the front mount and that took care of the sloppy shifting/clunking. Its my understanding that the tranny mounts are gel and less likely to need replacing. The front one made all the difference for me.
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Excellent. Two less than I expected to buy, thank you.
__________________
2003 Porsche Boxster S 3.2L l AASCO Lightweight Flywheel l FVD Brombacher ECU l FVD Brombacher 100 Cell Sport Catalytics l FVD Brombacher Sport Headers l GiroDisc 340mm FR Rotors l IPD Intake Plenum l Litronics l KW Variant 3 Coilovers l Porsche 997 75mm Throttle Body l Road Sport Supply Underdrive Pulley Kit l Sachs Stage 2 Racing Clutch Kit l TechArt Short Shift Kit l TechArt Power Flow Kit l TechArt Sport Exhaust.
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10-21-2009, 06:47 PM
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#13
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Registered User
Join Date: Nov 2007
Location: Chicago suburbs
Posts: 1,675
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"I have 18500 on the clock now"
Don't feel bad...my 02 just broke 17k miles and is likely done for the year, as fun time driving is nearly over in northern Illinois.
The only time I drive the Box is for pleasure and when I will be certain to drive long/hard enough to get it good and hot...no short trips for me. I may just change the engine mount to get some additional feedback...I'm used to solid mounts all around in my 911, though not practical for the street.
There's always next year!
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JGM
2002 Boxster S
1973 911 Green FrankenMeanie
PCA DE Instructor circa '95
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12-13-2009, 03:52 PM
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#14
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Registered User
Join Date: May 2007
Location: San Francisco, CA
Posts: 218
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Another data point:
I replaced my engine mount today at 32k miles (went with the 987 mount). When I first removed the old one, I thought it still looked good, but when I put the bolt back into it and flexed it a bit, I could see large cracks.
The installation process was longer and more difficult than I expected. Had to go out and buy a deep 15mm socket. Can't see a way to do the job without one of those.
Results: the clutch chatter when backing into the garage has gone away completely! I also had intermittant clutch chatter when going forward as well. That seems to be gone too.
In both of the close-up photos, I'm flexing the mount with the bolt so you can see the cracks (you can only see the bolt in one of the photos, but it's being used from the other side in the other photo)
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2003 Boxster S
1995 Ferrari F355 Spider
San Francisco, CA
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