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

Post Reply
 
LinkBack Thread Tools Display Modes
Old 02-28-2015, 01:23 PM   #1
Registered User
 
Join Date: Nov 2013
Location: Colorado
Posts: 442
Garage
non externally replaceable IMS

my 99 got a replacement Porsche Factory rebuild engine in 2008 after the original engine cratered with 37,000 miles on it. I have heard the Porsche rebuilt engine in 2008 likely has the non externally replaceable engine. Has anyone heard of the failure rate of these bearings?
James

jdlmodelt is offline   Reply With Quote
Old 02-28-2015, 02:16 PM   #2
Registered User
 
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,261
Quote:
Originally Posted by jdlmodelt View Post
my 99 got a replacement Porsche Factory rebuild engine in 2008 after the original engine cratered with 37,000 miles on it. I have heard the Porsche rebuilt engine in 2008 likely has the non externally replaceable engine. Has anyone heard of the failure rate of these bearings?
James
Any factory replacement engine installed after 2005 would carry the non serviceable bearing. While there is no published data on how frequently they fail, they do fail, but at a low rate; perhaps similar to that of the original factory dual row bearings.
__________________
Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
JFP in PA is offline   Reply With Quote
Old 02-28-2015, 02:48 PM   #3
Registered User
 
Join Date: Nov 2013
Location: Colorado
Posts: 442
Garage
Quote:
Originally Posted by JFP in PA View Post
Any factory replacement engine installed after 2005 would carry the non serviceable bearing. While there is no published data on how frequently they fail, they do fail, but at a low rate; perhaps similar to that of the original factory dual row bearings.
Thanks for sharing!
jdlmodelt is offline   Reply With Quote
Old 03-01-2015, 07:09 AM   #4
Engine Surgeon
 
Join Date: Aug 2008
Location: Cleveland GA USA
Posts: 2,425
Less than 1%, IF its not taken to the track. On the track the M97 bearings have the highest failure rates, by far.

When Porsche added bearing diameter, and increased surface speed of the bearing, that was great for lower RPM street service, but horrible for sustained high speed operation. I have a directive about this, if you email us.

__________________
Jake Raby/www.flat6innovations.com
IMS Solution/ Faultless Tool Inventor
US Patent 8,992,089 &
US Patent 9,416,697
Developer of The IMS Retrofit Procedure- M96/ M97 Specialist
Jake Raby is offline   Reply With Quote
Post 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 12:54 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page