Purchased an 05 987S
06-27-2019, 02:22 PM
#16
Rennlist Member
The engine I have now is a Carrera 3.6L resleeved to a 3.8L. Had it dyno'd and it got 320HP to the wheels. I'm putting on a couple of add-ons that should push it to around 340HP - EVOMS air filter and IPD competition plenum and GT3 throttle body.
06-28-2019, 12:26 PM
#17
I pulled these off a Pelican Parts blog post:
The question of which bearing is inside your engine is probably the number one question asked when people read this article. Porsche's electronic parts catalog lists the following engine numbers as the cutoffs for the various engines:
However, as mentioned previously, practical experience has determined that these numbers are not 100% correct. Porsche replaced and/or repaired a lot of engines over the years and as a result there are a lot of engines out there where parts are mixed and matched. For example, the 3.4 Porsche factory motor that I installed in my 3.4L conversion has the very-late style intermediate shaft bearing with the 22mm center nut (see Figure 17), but is missing some other upgrades that had been implemented over the years.
The question of which bearing is inside your engine is probably the number one question asked when people read this article. Porsche's electronic parts catalog lists the following engine numbers as the cutoffs for the various engines:
Engine NumberModelBearing Type
Up to engine # M 651 12851Boxster 2.7L M96.22Double Row Bearing
Up to engine # M 671 11237Boxster S 3.2L M96.21Double Row Bearing
Up to engine # M 661 14164Carrera 996 3.4LDouble Row Bearing
From engine # M 651 12852Boxster 2.7L M96.22Single Row Bearing
From engine # M 671 11238Boxster S 3.2L M96.21Single Row Bearing
From engine # M 661 14165Carrera 996 3.4LSingle Row Bearing
All 2005 Boxster 987 (maybe some 2006 models)Single Row Bearing
All 2005 Carrera 997 (maybe some 2006 models)Single Row Bearing
Maybe some 2006 Cayman modelsSingle Row Bearing
Up to engine # M 651 12851Boxster 2.7L M96.22Double Row Bearing
Up to engine # M 671 11237Boxster S 3.2L M96.21Double Row Bearing
Up to engine # M 661 14164Carrera 996 3.4LDouble Row Bearing
From engine # M 651 12852Boxster 2.7L M96.22Single Row Bearing
From engine # M 671 11238Boxster S 3.2L M96.21Single Row Bearing
From engine # M 661 14165Carrera 996 3.4LSingle Row Bearing
All 2005 Boxster 987 (maybe some 2006 models)Single Row Bearing
All 2005 Carrera 997 (maybe some 2006 models)Single Row Bearing
Maybe some 2006 Cayman modelsSingle Row Bearing
However, as mentioned previously, practical experience has determined that these numbers are not 100% correct. Porsche replaced and/or repaired a lot of engines over the years and as a result there are a lot of engines out there where parts are mixed and matched. For example, the 3.4 Porsche factory motor that I installed in my 3.4L conversion has the very-late style intermediate shaft bearing with the 22mm center nut (see Figure 17), but is missing some other upgrades that had been implemented over the years.
06-28-2019, 01:39 PM
#18
Rennlist Member
Not sure how to read that list... all I know is my engine is M96/26 and has the serviceable bearing type (i.e. do not have to split the case). Car build date February 2005.
YMMV
YMMV
06-28-2019, 03:03 PM
#19
Rennlist Member
Yes, also unclear, how does single/double row bearing map to serviceable/unserviceable, if it maps at all?
06-28-2019, 03:28 PM
#20
06-28-2019, 03:48 PM
#21
Rennlist Member
06-28-2019, 04:14 PM
#22
The LN IMS Solution is a lifetime solid bearing that uses direct oil feed for lubrication.
06-28-2019, 04:24 PM
#23
Rennlist Member
Vs. ~10% for the double row? I've also heard that the IMS bearings like it when engines are regularly revved to the limit which improves their lubrication - the failed ones being those that haven't been driven/revved enough. My first Porsche was a new 06 Boxster S which I sold after 6 years, 40k miles, and 70+ track days, completely stock with no problems whatsoever -- just change fluids, pads, and rotors. Never needed to add oil either.