Did Boxster ever have dual row IMS?
06-29-2016, 04:38 PM
#1
Pro
Thread Starter
Did Boxster ever have dual row IMS?
Just occurred to me the other day. Most 996 owners are aware that the 1999 Porsche 911 came with the dual row IMS which suffered a failure rate below 1%. Then in MY 2000 some penny pinching genius decided that Porsche could save X amount of $$ if they changed to an inferior single row bearing.(failure rate 8%) But I've never heard of early Boxsters being equipped with dual row bearings at any time.
06-29-2016, 09:09 PM
#2
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Join Date: Jul 2011
Location: Waterloo, Ontario
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Boxsters share the same general dual row production spread that the 996's do. For cars with original engines... up to 1999, they'll be dual row. 2000 & 2001 are transition years where you could have either, and 2002 and up would be only single row.
My 2000 986S is a dual row, but I know two 2001 owners that are also dual row, where the majority of that model year are single row.
My 2000 986S is a dual row, but I know two 2001 owners that are also dual row, where the majority of that model year are single row.
06-30-2016, 07:47 AM
#3
Pro
Thread Starter
Boxsters share the same general dual row production spread that the 996's do. For cars with original engines... up to 1999, they'll be dual row. 2000 & 2001 are transition years where you could have either, and 2002 and up would be only single row.
My 2000 986S is a dual row, but I know two 2001 owners that are also dual row, where the majority of that model year are single row.
My 2000 986S is a dual row, but I know two 2001 owners that are also dual row, where the majority of that model year are single row.
06-30-2016, 11:59 AM
#4
Race Director
Less friction and less heat. Lower noise levels. Less mass to spin up or slow down. The decision may not have been driven by some penny pinching accountant.
06-30-2016, 08:00 PM
#5
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06-30-2016, 08:06 PM
#6
Race Director
Some of the bearing is pressed on the IMS and spins with it. Thus the larger dual row bearing being heavier represents more mass that has to be accelerated when one is pushing down on the gas pedal or slowed down when one is off the gas pedal. Granted it is not lots more mass.
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09-02-2016, 11:17 AM
#8
Racer
For visual learners and those needing elocution lessons:
Ultra in-depth Boxster 986 buyer's guide including IMS deep dive analysis - YouTube
Ultra in-depth Boxster 986 buyer's guide including IMS deep dive analysis - YouTube
09-02-2016, 05:08 PM
#9
Drifting
Yes, He has a great series on the Boxster/M06 .Wish the Mods would move this link somewhere the noobs would find it. These video links would be a great way to attract new Boxster/996 owners to the sit - hint !
It could help the new owner zoom up the learning curve and understand the more advanced content here.
It could help the new owner zoom up the learning curve and understand the more advanced content here.
09-02-2016, 05:29 PM
#10
Intermediate
I signed up for this site about a month ago, to learn about the cars, things to look for, what gets fatigued, things like that.
I feel like I'm pretty well versed and will be taking ownership of a 1999 Boxster in a couple weeks.
Always finding new thins to read here.
Been perusing the Boxster vids a lot as well.
I feel like I'm pretty well versed and will be taking ownership of a 1999 Boxster in a couple weeks.
Always finding new thins to read here.
Been perusing the Boxster vids a lot as well.
09-02-2016, 05:35 PM
#11
Drifting
Ryan - thank you.
When noobs ask basic questions that Search or Google would have answered easily, they are often ignored ,or worse. Those that have made a modest effort to educate themselves about their issues get a great welcome. The only exception is those guys who sign up with a female name and then the response is huge :-) .That is either noble or pathetic - I am unsure which :-)
When noobs ask basic questions that Search or Google would have answered easily, they are often ignored ,or worse. Those that have made a modest effort to educate themselves about their issues get a great welcome. The only exception is those guys who sign up with a female name and then the response is huge :-) .That is either noble or pathetic - I am unsure which :-)
09-02-2016, 05:44 PM
#12
Intermediate
Ryan - thank you.
When noobs ask basic questions that Search or Google would have answered easily, they are often ignored ,or worse. Those that have made a modest effort to educate themselves about their issues get a great welcome. The only exception is those guys who sign up with a female name and then the response is huge :-) .That is either noble or pathetic - I am unsure which :-)
When noobs ask basic questions that Search or Google would have answered easily, they are often ignored ,or worse. Those that have made a modest effort to educate themselves about their issues get a great welcome. The only exception is those guys who sign up with a female name and then the response is huge :-) .That is either noble or pathetic - I am unsure which :-)
I'm new to Porsche, not auto forums.
