06-02-2017, 06:01 AM
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#1
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Registered User
Join Date: Dec 2009
Location: Orange County, CA
Posts: 1,848
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Life expectancy of transmission mounts
my '07 CS has reach 99,000 miles and about 4k miles after installing a new clutch and DMFW, my car start having 'clutch chatter' and vibrating when smoothly releasing the clutch, unless you release the clutch a bit on the hard side.
Also you can hear some noises like a really old car suspension squeaking, and last night after a closer inspection, while pushing/pulling around the SpeedArt muffler to see if something was loose, I noticed some movement (up and down) on the passenger side transmission mount with a faint squeaking.
Could this means that the transmission mounts are already worn (after 'only' 100k miles ) even if there is not a single drop of fluid (or 'oil sweat') around the mounts?
I checked the prices for the transmission mounts and are not really that cheap, just wanted to hear your opinion before I order the new mounts (almost $600)
Thank you!
PS: By any chance does someone has any experience with the "Rein Automotive" brand? Supposed to be German made and they cost 1/3 of the Porsche mounts
Last edited by Gilles; 06-02-2017 at 06:08 AM.
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06-02-2017, 06:09 AM
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#2
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,273
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Quote:
Originally Posted by Gilles
my '07 CS has reach 99,000 miles and about 4k miles after installing a new clutch and DMFW, my car start having 'clutch chatter' and vibrating when smoothly releasing the clutch, unless you release the clutch a bit on the hard side.
Also you can hear some noises like a really old car suspension squeaking, and last night after a closer inspection, while moving around the SpeedArt muffler to see if something was loose, I noticed some movement (up and down) on the passenger side transmission mount with a faint squeaking.
Could this means that the transmission mounts are already worn (after only 100k miles ) even if there is not a single drop of fluid (or 'oil sweat') around the mounts?
I checked the prices for the transmission mounts and are not really that cheap, just wanted to hear your opinion before I order the new mounts (almost $600)
Thank you!
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While I hate to say it, "it depends". We have seen the factory mounts go 200K miles without issue on some cars, and fail at 50K miles on others. All depends upon how the car has been used.
Today's money saving trans mount trick: Do not buy the Boxster mounts as they come as an assembly; instead buy the 993 mounts which come as just the exact same oil filled part at about 1/3 the price.....
__________________
“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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06-02-2017, 07:56 AM
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#4
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550 Anniversary
Join Date: Jul 2012
Location: Surrey, UK
Posts: 747
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In my experience the engine mount goes a long time before the gearbox mounts giving the clunky gearchange. You can refurb the gearbox mounts by using poly material instead of the hydraulic piece.
__________________
Current: 550 Spyder Anniversary- Carnewal exhaust - 100 cell cats - stainless manifolds - 4" underdrive pulley - poly gearbox mounts - rear lower alu brace - adjustable rear toe links
Sold: 986S - Zenith Blue - 18" Sport Classics - Black Zunsport grilles - Stainless silencer and manifolds - K&N panel - shortshift - M030 suspension - 75mm throttle body - custom 83mm intake - SmartTop - custom remap - MDS underdrive pulley
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06-02-2017, 10:28 AM
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#5
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Registered User
Join Date: Dec 2009
Location: Orange County, CA
Posts: 1,848
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Quote:
Originally Posted by JFP in PA
Today's money saving trans mount trick: Do not buy the Boxster mounts as they come as an assembly; instead buy the 993 mounts which come as just the exact same oil filled part at about 1/3 the price.....
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Hello JFP,
By any chance do you have the P/N for the 993 transmission mounts?
I have an 07 Cayman S with the 6 speed transmission, and most likely they are the same mounts as the ones on the Boxter S.
Thank you in advance!
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06-02-2017, 11:45 AM
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#7
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Registered User
Join Date: Dec 2009
Location: Orange County, CA
Posts: 1,848
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Quote:
Originally Posted by The Radium King
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These look great, but I am not sure if their softest setting would produce more vibration than the OEM's
I installed once a front engine mount and ended removing it after a few weeks...
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06-02-2017, 11:57 AM
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#8
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Registered User
Join Date: Apr 2010
Location: Canada
Posts: 3,121
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Quote:
Originally Posted by Gilles
These look great, but I am not sure if their softest setting would produce more vibration than the OEM's
I installed once a front engine mount and ended removing it after a few weeks...
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yeah, can't say. i installed them in the mid (sport) setting and noted a big improvement in shifting. there was also an increase in vibration/noise, but i had installed loud exhaust and removed the insulation around the engine bay at the same time so not certain what the vibration increase was attributable to. oddly enough, just installed the function first yellow (sport) engine mount and didn't experience any noticeable increase in vibration.
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06-02-2017, 12:36 PM
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#9
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Registered User
Join Date: Dec 2009
Location: Orange County, CA
Posts: 1,848
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Quote:
Originally Posted by The Radium King
yeah, can't say. i installed them in the mid (sport) setting and noted a big improvement in shifting. there was also an increase in vibration/noise, but i had installed loud exhaust and removed the insulation around the engine bay at the same time so not certain what the vibration increase was attributable to. oddly enough, just installed the function first yellow (sport) engine mount and didn't experience any noticeable increase in vibration.
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Radium, how much did the vibration increased with the (mid) sport rubber?
Because according to Rennline the softest rubber "should be..." similar to the OEM mounts (didn't ask) but I am sure that once you install them you cannot return them
However, I had great experiences with Rennline in the past..
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06-02-2017, 12:49 PM
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#10
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Registered User
Join Date: Apr 2010
Location: Canada
Posts: 3,121
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noticeable but not major. in a pros/cons analysis, the improvement in shifting far outweighed the increase in vibration. really, was only noticeable when you first started the car; once it was warm vibration was less. girlfriend didnt notice.
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06-04-2017, 12:40 PM
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#11
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Registered User
Join Date: May 2014
Location: S.California
Posts: 2,027
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The best price for the 993 part I found is from ********************************Az:
I would have mentioned Pelican but their site seems to be down- again.
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06-04-2017, 12:43 PM
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#12
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Registered User
Join Date: May 2014
Location: S.California
Posts: 2,027
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I found the 993 part for $168 each. Part # 99337504905. Just Google+shopping
I would have liked to have linked to our Sponsor's Parts Catalog but their site is down(for me on Firefox- again.
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06-04-2017, 01:12 PM
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#13
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,273
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Quote:
Originally Posted by Gelbster
I found the 993 part for $168 each. Part # 99337504905. Just Google+shopping
I would have liked to have linked to our Sponsor's Parts Catalog but their site is down(for me on Firefox- again.
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They are $150 each (superseded part number 993-375-049-09) from Sunset Porsche.
__________________
“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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06-06-2017, 05:55 AM
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#14
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Registered User
Join Date: Dec 2009
Location: Orange County, CA
Posts: 1,848
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Quote:
Originally Posted by JFP in PA
They are $150 each (superseded part number 993-375-049-09) from Sunset Porsche.
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Thank you Jeff!
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