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View Poll Results: IMSB Replacement Failure
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Original IMSB working fine
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39 |
55.71% |
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Original IMSB failed
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1 |
1.43% |
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LN ceramic IMSB working fine
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17 |
24.29% |
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LN ceramic IMSB failed
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0 |
0% |
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Other IMSB replacement working fine
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12 |
17.14% |
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Other IMSB replacement failed
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1 |
1.43% |
02-18-2017, 06:20 AM
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#1
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Registered User
Join Date: Feb 2015
Location: Baltimore, MD
Posts: 60
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Survey of failed IMS replacements
I know a lot of people have had their IMSB replaced, but how many of those replacements have failed?
Post your model, IMSB type, when replaced, how many miles on car now, how many miles since replaced, and whether it failed:
2000 Base, LN double row ceramic, 10/14, 65,500 miles on car now, 6500 miles since IMSB replaced, working fine
Last edited by Fyeganeh; 02-18-2017 at 06:24 AM.
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02-18-2017, 08:04 AM
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#2
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Registered User
Join Date: Apr 2007
Location: Bay Area
Posts: 524
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2002 S Tiptronic, 142000 miles when replaced 2012. 25k since replacement. Original IMSB had no signs of wear
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2008 Boxster S PDE2
02 Boxster S Blk on Blk(Stock for the Wife)
88 turbo S (My Toy) slightly modified
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02-18-2017, 08:52 AM
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#3
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Registered User
Join Date: Sep 2013
Location: Chandler, AZ
Posts: 1,796
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Have replace two the the LN ceramic bearing. Boxster S about 4 years ago and have put 30k on it since and the Carrera about 8 months ago and have put on 3k. Both had the seals fail and the grease wash out.
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03 Carrera
02 Boxster S Guards Red, black interior with matching hardtop
89 Carrera 4
89 944 S2
78 911SC
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02-18-2017, 09:07 AM
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#4
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Registered User
Join Date: Aug 2009
Posts: 1,466
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31,000 on a rebuild with a new LN ceramic kit. About 40-50% of mile on track. However there were many improvements made and a lot of weight dropped inside the engine while rebuilding.
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2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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02-18-2017, 09:11 AM
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#5
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Registered User
Join Date: Jul 2005
Location: ga
Posts: 115
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986s had L&N ceramic for 20k miles then changed to final solution for past 10k. 996 has had L&N bearing for 25k. No problems with any of them. Neither of the originals had failed.
Sent from my iPhone using Tapatalk
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2000 Black 996 Aero, 2001 Forest Green Boxster S, 94 Midnight Blue 968 Cab, 1980 Pongee Beige 911SC Weissach Edition, 2004 BMW R1200CLC
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02-18-2017, 09:47 AM
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#6
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Registered User
Join Date: Dec 2015
Location: KS
Posts: 116
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99 986. My original double row was failing. Seals leaked, bearing grease gone, oil in IM shaft. Bearing was still intact, but balls had worn down making bearing very loose.
Replaced with Vertex IMS bearing including oil pump modification. Also added non-bypass filter and filter mag. 17K on it as of now.
I replace my oil filter every 3K and check it for debris. So far, so good.
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02-18-2017, 11:24 AM
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#7
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Registered User
Join Date: Oct 2015
Location: Scituate MA
Posts: 929
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2000 S dual bearing, replaced with LN Retrofit as precautionary action. Original was in good shape at 50k. Sleep better. 😴
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02-18-2017, 12:05 PM
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#8
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,614
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Quote:
Originally Posted by Porsche9
Have replace two the the LN ceramic bearing. Boxster S about 4 years ago and have put 30k on it since and the Carrera about 8 months ago and have put on 3k. Both had the seals fail and the grease wash out.
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I have never seen a sealed LN ceramic bearing, or one with grease in it.....
__________________
“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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02-18-2017, 12:32 PM
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#9
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Need For Speed
Join Date: Feb 2013
Location: Funville
Posts: 2,114
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Knock on wood, 2003 S with 122k miles on the original bearing. Looked at getting " The IMS Solution" put on it, but the cost was over $4k. No way I'm putting that kind of money in an engine with 122k miles on it.
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2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
Last edited by KRAM36; 02-18-2017 at 02:48 PM.
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02-18-2017, 01:54 PM
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#10
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Registered User
Join Date: Dec 2008
Location: Queensland, Australia
Posts: 1,522
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2001 986 S, dual row bearing.
Replaced mid 2010 with LN dual row ceramic @ 71,000km (44,000 miles) currently @ 110,000km (69,000 miles).
The original bearing had no visual wear, but unusually had only one seal fitted from the factory!!
My problem now is that the ceramic bearing has been in service for nearly 7 years and LN recommend replacing the bearing every 75,000 miles or 6 years - does this mean I'm on borrowed time.....
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2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley.
2001 MV Agusta F4.
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02-18-2017, 02:39 PM
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#11
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Registered User
Join Date: Sep 2009
Location: toronto
Posts: 2,668
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Quote:
Originally Posted by Steve Tinker
2001 986 S, dual row bearing.
Replaced mid 2010 with LN dual row ceramic @ 71,000km (44,000 miles) currently @ 110,000km (69,000 miles).
The original bearing had no visual wear, but unusually had only one seal fitted from the factory!!
My problem now is that the ceramic bearing has been in service for nearly 7 years and LN recommend replacing the bearing every 75,000 miles or 6 years - does this mean I'm on borrowed time.....
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I am in the same boat exactly with time and mileage let me know what you find out..
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986 00S
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02-18-2017, 03:58 PM
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#12
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Registered User
Join Date: Jul 2014
Location: Listowel, Ontario, Canada
Posts: 1,120
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Quote:
Originally Posted by Steve Tinker
2001 986 S, dual row bearing.
Replaced mid 2010 with LN dual row ceramic @ 71,000km (44,000 miles) currently @ 110,000km (69,000 miles).
The original bearing had no visual wear, but unusually had only one seal fitted from the factory!!
My problem now is that the ceramic bearing has been in service for nearly 7 years and LN recommend replacing the bearing every 75,000 miles or 6 years - does this mean I'm on borrowed time.....
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No more so than with the original bearing...
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2011 Boxster 987.2 Arctic silver / Black leather, PDK with Sports Chrono Package Plus
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02-18-2017, 04:36 PM
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#13
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Registered User
Join Date: Sep 2013
Location: Chandler, AZ
Posts: 1,796
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Quote:
Originally Posted by JFP in PA
I have never seen a sealed LN ceramic bearing, or one with grease in it.....
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I'm referring to the original bearings.
__________________
03 Carrera
02 Boxster S Guards Red, black interior with matching hardtop
89 Carrera 4
89 944 S2
78 911SC
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02-18-2017, 08:01 PM
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#14
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Registered User
Join Date: Oct 2013
Location: Atlanta, GA
Posts: 419
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2001 S - had IMS Solution (permanent fix) installed when engine was rebuilt 10K miles ago.
Working fine. Original single row IMSB had not yet failed at time of replacement but did show signs of wear. Also all grease had been washed out of the bearing.
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2001 Boxster S - Speed Yellow, Black Leather, Tiptronic, Jake Raby rebuilt 3.2 with IMS Solution
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02-19-2017, 02:53 AM
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#15
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Master Brewer
Join Date: Jun 2015
Location: Northern Ohio
Posts: 104
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IMSB replaced with 32K a year and half ago with LN ceramic. Piece of mind and smart move. Original bearing was greaseless and had slight wear.
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____________________________________
2004 Boxster S Anniversary 550 Spyder
2018 Porsche Macan (wife's ride)
2004 Ford F-150 4X4 Crew
6 Fast Bicycles
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02-19-2017, 04:25 AM
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#16
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Registered User
Join Date: Sep 2010
Location: Foster City CA
Posts: 1,099
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IMSB replaced at 120K with IMS Solution. Original single row greaseless but otherwise OK.
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02-19-2017, 04:31 AM
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#17
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Registered User
Join Date: Nov 2015
Location: South Wales, UK
Posts: 852
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2003 Boxster S, original IMSB, 96,000 miles, my daily car, no signs of failure, and no plans on changing it.
Ever.
__________________
Porsche Boxster S Type 986
Bi-xenon Headlight Upgrade | 987 S 18" Anthracite Alloys | Android Head Unit | 5000k 55w HID's | 5000k Cree DRL's | 5000k Cree number plate lights | Cree LED Indicators | One-touch roof operation | Bypass exhaust pipes | Parking sensors | Ambient footwell lighting
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02-19-2017, 07:16 AM
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#18
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Registered User
Join Date: Apr 2007
Location: Bay Area
Posts: 524
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Can you edit and add one more item to the Poll? I'd be curious to know how many IMS bearings replaced that had wear.
__________________
2008 Boxster S PDE2
02 Boxster S Blk on Blk(Stock for the Wife)
88 turbo S (My Toy) slightly modified
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02-19-2017, 09:34 AM
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#19
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Registered User
Join Date: Aug 2005
Location: Sanford NC
Posts: 2,581
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If you have a survey, it should be divided into three surveys as the characteristics of the three generations of bearings is quite different. And since LN has 3 ball bearing SKUs...single, double and Single Pro.
As for some background on loose or looks/felt fine original bearings that were removed, do a search using the forum search function for IMS and JFP as he runs a shop and has done a whole bunch.
Last edited by mikefocke; 02-19-2017 at 11:09 AM.
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02-19-2017, 10:02 AM
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#20
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Registered User
Join Date: Sep 2013
Location: Montreal, QC. (currently expat to Shanghai)
Posts: 3,249
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 JFP returns "Jackson Free Press" in Google. I'm not joking... LOL
.... and IMS returns pretty much all the same thing; some Gore-Gallery stuff nobody wants to see. Btw my bearing is in the 1st survey category, of course (cough's)
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'97 Boxster base model 2.5L, Guards Red/Tan leather, with a new but old Alpine am/fm radio.
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