I went to ln engineering and see the IMS bearing is for up to 2005.
I was under the impression the issue went until 2013?
Full Version: IMS bearing
For what it's worth, my local Porsche dealer told me that the issue was solved with 2009 & above.
I agree. It was resolved when they went to the DFI engines 2009.
QUOTE(Cairo94507 @ Jun 12 2015, 07:17 PM) 
I agree. It was resolved when they went to the DFI engines 2009.
Yep.... 2009 is the magic year
Read IMS 101 here at www.imsretrofit.com
M96 engines used the dual row bearing from 97-2000. The single row from 2001-2005. The M97 engine brought with it an IMS Bearing that was 26% larger and can't be retrofitted with the processes I invented due to the bearing being larger than the crankcase port used to remove it. The M97 used this bearing through 2008.
In 2009 the factory gave us the 9a1 engine, with no IMSB, and a host of other issues. 2009 is NOT a magic year, and the future will prove what we've been seeing for 5 years working with the 9a1 engines, some that have failed at only 4,165 miles.
The GT3 and Turbo engines utilized the Mezger design IMS/ Layshaft through 2013 when they were also replaced with the 2 chain engine, missing a layshaft for the first time.
M96 engines used the dual row bearing from 97-2000. The single row from 2001-2005. The M97 engine brought with it an IMS Bearing that was 26% larger and can't be retrofitted with the processes I invented due to the bearing being larger than the crankcase port used to remove it. The M97 used this bearing through 2008.
In 2009 the factory gave us the 9a1 engine, with no IMSB, and a host of other issues. 2009 is NOT a magic year, and the future will prove what we've been seeing for 5 years working with the 9a1 engines, some that have failed at only 4,165 miles.
The GT3 and Turbo engines utilized the Mezger design IMS/ Layshaft through 2013 when they were also replaced with the 2 chain engine, missing a layshaft for the first time.
There goes my plan for an '09. What about 2013-on Boxsters and Caymans dream killer?
QUOTE(Jake Raby @ Jun 13 2015, 12:00 AM)
Read IMS 101 here at www.imsretrofit.com
M96 engines used the dual row bearing from 97-2000. The single row from 2001-2005. The M97 engine brought with it an IMS Bearing that was 26% larger and can't be retrofitted with the processes I invented due to the bearing being larger than the crankcase port used to remove it. The M97 used this bearing through 2008.
In 2009 the factory gave us the 9a1 engine, with no IMSB, and a host of other issues. 2009 is NOT a magic year, and the future will prove what we've been seeing for 5 years working with the 9a1 engines, some that have failed at only 4,165 miles.
The GT3 and Turbo engines utilized the Mezger design IMS/ Layshaft through 2013 when they were also replaced with the 2 chain engine, missing a layshaft for the first time.
Jake,
What issues are 9a1 engines seeing? I thought the elimination of the Intermediate Shaft Bearing and a new rear main seal design solved the biggest issues with the earlier engines?
QUOTE(RobW @ Jun 13 2015, 12:24 AM)
There goes my plan for an '09. What about 2013-on Boxsters and Caymans dream killer?
Not sure what you're itching for, but FWIW the 996 Turbos are great buys right now and do not have the IMS problem as Jake noted.
Cylinder failures and timing chain failures. There has also been a rash of on- track failures of the oil pump drive sprocket.
Just buy an earlier car and perform an IMS retrofit.
Just buy an earlier car and perform an IMS retrofit.
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