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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHNew engine mounts - feels good!
Leading reported evidence
Use diy listed
Performed · outcome unconfirmed
No successful repair reported for this finding.
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1
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Performed · outcome unconfirmed · Original poster
I used the DIY listed on GeorgeCo.org website...well written, good pics and easy to follow.
Leading evidence: 'Use diy listed' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'less engine movement is the reason' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Clean between the rads and condensers' (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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Suspected cause
I suspect less engine movement is the reason for the better shifting.
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Suggestion
Another easy but longer task would be removing the front bumper and cleaning between the rads and condensers.
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Suggestion
I'm also adding the vibrating seat tip to my PPI Things To Inspect List, as it could help indicate that the mounts are shot.
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Suggestion · Original poster
My 2002 C4S has always had good crisp gearchanges so that wasn't the driver for changing the engine mounts...I changed them becasue the exhaust tips were not level.
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Suggestion
I certainly have to agree I've had the new mounts for about 6 month waiting to do it myself and not got around to it and I wish I had done it earlier a huge difference much better cornering and no wobble when changing lanes, the old ones were bad !!
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22 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261026T100758Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I have just changed out the engine mounts on my 85K miles 2002 C4S and I'm surprised to say that it does drive noticeably different. The gear-changes on my car have always felt good, but now feel even more precise. Plus the passenger seat is no longer vibrating. If you are contemplating changing out those 10 year old mounts, go for it. Easy DIY, especially with the good instructions available on this site, that takes about an hour.
This was my first real maintenance task that I've completed myself, other than oil changes, and I'm really happy with the results. Overall a real feel good weekend task.
Thanks for the tip. I'm also adding the vibrating seat tip to my PPI Things To Inspect List, as it could help indicate that the mounts are shot. I looked up the parts and instructions on Pelican Parts. Looks so easy, a cave man could do it. Don't even want to know how much the Dealer would charge.
Did mine yesterday. Took about an hour and a half, which included a run to Home Depot for an 18 mm 1/2" drive deep socket. Main thing I noticed is shifting better. Bought the mounts from Pelican. Read 3 or 4 of the threads on here first to avoid some of the pitfalls the other guys had. I went slowly and all went very smoothly.
I know the 'feel good' feeling from DIY work. Another very easy DIY is checking or even changing the serpentine belt and air filter (if you don't have maintenance records).
http://www.youtube.com/watch?v=hXxYDJ4Rfa4
Another easy but longer task would be removing the front bumper and cleaning between the rads and condensers. Take particular care on jacking up the front of the car. There are instructions out there on the correct procedure.
http://www.youtube.com/watch?v=Um-h2aUJHY4
In conversation with a Porsche specialist Indy, he said a significant factor in mount collapse or stretch happens because often thse cars are jacked up by the engine which stretches the mounts upward.
Wow...I've just watched the serpentine belt video and can't believe how easy that task looks. Why would anyone pay a garage to change that out! These cars are well Engineered.
You will need a very large wrench to move the spring wheel. I think 24 Mil deep socket on the torsion bar or use a large adjustable as I did. Then its a breeze. It's a good idea to take a photo before you remove it so you know how it goes back. Take photos of anything on the car which you decide to remove. There's nothing lost but maybe something gained if you loose track putting things back together. You can change the air filter en-route. Try all the pulley wheels for noise or rattle. They should all spin free and quiet.
Got my mounts from Pelican Parts:
993-375-049-08-M270 $91.50 2 $183.00
Engine Mount Left/Right (2 per car, sold individually), Carrera (1999-
05) Carrera 4 (1999-05) Brand: Corteco
Several good DIY threads - "search" is your friend.
I am familiar with search but thanks for that suggestion... [sarcastic voice]
Since the OP had such a positive and easy experience I was interested in what he specifically found useful, not simply what I could find and sift through.
And thanks for the part number. Appreciated.
Sorry, didn't mean it as a slam. With a May 2001 join date, I know you know how to search. I should've said something like "So many good threads on this topic, just hit "search" and you'll be in good shape". Kind of like looking for good barbeque in KC (or North Carolina).
Ralph, take a look at this tech article as well for engine mount instructions:
Changing Your Engine Mounts
Part information is available here:
996 Engine Mounts
Enjoy the DIY project and the difference in feel after the job is done!
Mark/Pelican Parts
Pelican is my new best friend. They have great info, knowledgeable crew, and as a bonus, they are close to me.
Check out their site, tons of good info.
I just had my engine mounts changed at 125k done by the dealer as they had it for the water pump anyway. I certainly have to agree I've had the new mounts for about 6 month waiting to do it myself and not got around to it and I wish I had done it earlier a huge difference much better cornering and no wobble when changing lanes, the old ones were bad !!
Can you guys describe in more detail the shifting improvement when replacing the motor mounts? My car is getting a new transmission mount today at the dealer, and I've got the motor mounts ready for a DIY. Just wondering when you say an improvement in shifting exactly how that plays out. For example, did you have difficulty shifting into certain gears or when the engine was cold versus warm, and did that go away with the new motor mounts? Thanks in advance.
For my 03C4S with new mounts, a shift crispness was most apparent when cornering. Previously under cornering downshifts to 3rd for powering out of an apex were always vague rubbery. I suspect less engine movement is the reason for the better shifting.
I've not noticed any difference in cold or hot shifting, I don't see the mounts affecting that tho.
My 2002 C4S has always had good crisp gearchanges so that wasn't the driver for changing the engine mounts...I changed them becasue the exhaust tips were not level. The result is even tips and even crisper gearchanges. This is most noticeable to me when downshifting. Without me really realizing it, when you take your foot off the gas during downshift there was an ever-so-slight clunking that has now been eliminated.
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