Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

Reply
 
LinkBack Thread Tools Display Modes
Old 11-17-2011, 02:41 PM   #1
Registered User
 
John99Boxster's Avatar
 
Join Date: Oct 2011
Location: Wilmington, NC
Posts: 229
Garage
IMS Problems and failures

Being new to Porsche ownership and the Boxster in particular, I have a question concerning the IMS issue.

Is the Manual transmission Boxster more susceptible to IMS failure than the Tiptronic transmission?

Forgive me if this has been discussed. I did search and found little about the Manual vs. Tiptronic IMS issues.

Thanks for any education and experience you may provide here.

John

__________________
1999 Boxster
Ocean Blue Metallic/Savannah Beige | Tiptronic | Custom Rear Spoiler | 17" Turbo twist | Red Brembo Calipers | GAHH Top w/Glass Window | Tinted Windows | Cruise Control | Leather Interior | Heated Seats | Color Wheel Caps | Traction Control | Debadged
John99Boxster is offline   Reply With Quote
Old 11-17-2011, 02:53 PM   #2
Registered User
 
landrovered's Avatar
 
Join Date: Nov 2009
Location: Madison, Georgia
Posts: 1,012
Garage
My understanding is that the Tips are more susceptible to IMS failure only because they tend to be driven at lower RPMs more often than the manual gearboxes.

There is a correlation between lugging the engine and IMS failures. Slushboxes just shift at lower RPMs in normal daily operations than drivers that don't like to drive their cars below 3000 RPMs.
__________________
2001 Boxster S 3.6L, Zeintop
"Calling upon my years of experience, I froze at the controls." - Stirling Moss
landrovered is offline   Reply With Quote
Old 11-17-2011, 03:57 PM   #3
Registered User
 
Perfectlap's Avatar
 
Join Date: Nov 2004
Location: New Jersey
Posts: 8,696
I think how that engine was looked after has more to do with it. In other words I think you might be missing a big part of the issue if you don't consider the owner and look at it just based tip vs. manual. The IMS has inherit issues that are made worse by insufficient oil changes, inadequate oils, insufficient driving (I would not buy an annualy winter stored Boxster/996), and as landrovered points out, insufficient revving.

I'd be really curious to see a profile of what sorts of avearge weekly miles, (year round driver vs. summer only), if Mobil 1 (now questioned as inadquate) was used, if the oil was not changed at least twice a year, for those cars that experienced IMS failure.
__________________
GT3 Recaro Seats - Boxster Red
GT3 Aero / Carrera 18" 5 spoke / Potenza RE-11
Fabspeed Headers & Noise Maker
BORN: March 2000 - FINLAND
IMS#1 REPLACED: April 2010 - NEW JERSEY -- LNE DUAL ROW
Perfectlap is offline   Reply With Quote
Old 11-17-2011, 04:00 PM   #4
Registered User
 
Join Date: May 2011
Location: Miami florida
Posts: 1,591
Is there any known correlation between IMS failures and climate? In other words, do cars in the north, that get put away for part of the year and drive more in the cold tend to get more failures than cars in the south?
__________________
Current car

2000 Boxster 2.7l red/black

Previous cars

1973 Opel Manta
1969(?) Fiat 850 Convertible
1979 Lancia Beta Coupe
1981 Alfa Romeo GTV 6
1985 Alfa Romeo Graduate
1985 Porsche 944
1989 Porsche 944
1981 Triumph TR7
1989 (?) Alfa Romeo Milano
1993 Saab 9000
san rensho is offline   Reply With Quote
Old 11-17-2011, 04:15 PM   #5
Registered User
 
Join Date: Jan 2010
Location: NY
Posts: 130
This gets beat to death so much and there is stillno smoking gun. But the positive takjeaway from every discussion is the low incidence of failures
dennis is offline   Reply With Quote
Old 11-17-2011, 04:21 PM   #6
Registered User
 
Perfectlap's Avatar
 
Join Date: Nov 2004
Location: New Jersey
Posts: 8,696
Quote:
Originally Posted by san rensho View Post
Is there any known correlation between IMS failures and climate? In other words, do cars in the north, that get put away for part of the year and drive more in the cold tend to get more failures than cars in the south?
I've thought about this lately. Good weather like in SoCal tends to result in more frequent driving, year round. That has to be a good thing for an engine that gets stronger with more exercise.
__________________
GT3 Recaro Seats - Boxster Red
GT3 Aero / Carrera 18" 5 spoke / Potenza RE-11
Fabspeed Headers & Noise Maker
BORN: March 2000 - FINLAND
IMS#1 REPLACED: April 2010 - NEW JERSEY -- LNE DUAL ROW
Perfectlap is offline   Reply With Quote
Old 11-17-2011, 05:59 PM   #7
Registered User
 
DenverSteve's Avatar
 
Join Date: Jul 2011
Location: Denver/Winter Park, CO USA
Posts: 600
There's no KNOWN correlation between IMS failure and anything. There are too few to make any correlation to anything. Everyone who worries about this has a spin on the question - driven too hard, driven too soft, manual, automatic..... Again, not enough to establish any specific pattern and some go undiagnosed completely. Just drive it and don't worry......... that is known not to help anything.
__________________
Denver Steve
Carrera, Cabriolet, 6-Speed, Black/Tan
DenverSteve is offline   Reply With Quote
Old 11-17-2011, 06:00 PM   #8
Porscheectomy
 
Join Date: Mar 2006
Location: Seattle Area
Posts: 3,011
Quote:
Originally Posted by dennis View Post
This gets beat to death so much and there is stillno smoking gun. But the positive takjeaway from every discussion is the low incidence of failures
+1. Everything you read in the thread is pure conjecture. No one, including the two guys who provide the replacement bearing, will give you correlation information.
blue2000s is offline   Reply With Quote
Old 11-17-2011, 10:28 PM   #9
Registered User
 
Join Date: Aug 2008
Location: Arizona
Posts: 402
Here's my take on IMS after dreading about it for months when I bought the car. I have committed to it, it is an investment. Like any investment, you either get good returns (a smile on your face every time you take it out on a drive) or bad returns (failures, IMS or otherwise).

I believe the good outweighs the bad in the long run, just do regular oil changes and keep the car in good condition. Don't let a problem so rare as an IMS failure keep you from sleeping at night.
Lordblood is offline   Reply With Quote
Old 11-17-2011, 10:58 PM   #10
Certified Boxster Addict
 
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,516
"There's no KNOWN correlation between IMS failure and anything."

+1 to DenverSteve
__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
thstone is offline   Reply With Quote
Old 11-18-2011, 07:37 AM   #11
Registered User
 
landrovered's Avatar
 
Join Date: Nov 2009
Location: Madison, Georgia
Posts: 1,012
Garage
Quote:
Originally Posted by thstone View Post
"There's no KNOWN correlation between IMS failure and anything."

+1 to DenverSteve
Right you are and thank you for pointing that out.

There has been no sharing of actual failure data, only anecdotal evidence which is subject to hype, whimsy and manipulation, normally I do not give in to these sorts of wives tales but in this case I have helped to perpetrate the rumors.


So I redact my statement above and state what I know to the true and correct.

1. I have two Boxsters, one with a 2.5 and one with a 3.6
2. The 2.5 has 110k miles, the engine on the 3.6 has about 60k miles
3. Both are manual gearboxes
4. When the professional race shop (ALMS, Grand Am and Porsche Cup) installed the 3.6 in my car they said the IMS looked fine and did not feel the need to go to any lengths whatsoever to swap, retrofit, upgrade or change it in any way.
4. I felt panic when I first learned of IMS failures from this and other Porsche boards.
5. I considered having the retrofit done but was told it was not recommended for high mileage engines.
6. Other people have had failures and they seem to be really pissed about it.
7. I accepted the fact that a D-chunk, IMS failure or deer in the road could severely change my enjoyment of my Porsches at any moment.
8. I decided to enjoy the cars anyway, knowing that life is uncertain and fun is a worthwhile endeavor.


Thank you for letting me set the record straight.
__________________
2001 Boxster S 3.6L, Zeintop
"Calling upon my years of experience, I froze at the controls." - Stirling Moss
landrovered is offline   Reply With Quote
Old 11-18-2011, 08:09 AM   #12
Registered User
 
Chuck W.'s Avatar
 
Join Date: Sep 2008
Location: Agoura Hills (LA) So.Cal.
Posts: 1,571
I have had my '01 S since new. When the IMS issue came out I was very concerned. Over the years I have had conversations with three top notch independent Porsche mechanics in the Los Angeles area. One said to do it for peace of mind. The other two said to not worry about it that there were other issues with the motors that could cause them to fail besides the IMS.

All three recommended changing the oil regularly and examining the oil filter for metal pieces. I take it a step further and send the oil to Blackstone Lab (Blackstone Labs) for analysis.
__________________
1995 Porsche C4 Cab

2016 BMW M2, 6 Speed LBB - ED 7/2016
1997 993 Cab - Sold; 1997 993 Turbo - Sold
2001 Boxster S - Original Owner - 30K Miles -SOLD
Chuck W. is offline   Reply With Quote
Old 11-18-2011, 08:25 AM   #13
Registered User
 
2003S's Avatar
 
Join Date: Aug 2011
Location: Chicago
Posts: 475
Garage
Quote:
Originally Posted by landrovered View Post
8. I decided to enjoy the cars anyway, knowing that life is uncertain and fun is a worthwhile endeavor.
+1 Too true.

__________________
Some kind of happiness is measured out in miles
2003 Midnight Blue S
LN IMS Retrofit
2003S is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 11:53 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page