IMS on '06 997: Ever seen an IMS with a 22mm nut and old style, replaceable bearing?
#18
x2. It definitely is the newer M97 block. I don't have any info on exactly what date or a date range where the blocks were fuzzy between Porsche still using the older and smaller bearing and the newer larger one but IIRC, this was only on '05 models. Considering this an '06 model, I would assume it would be the larger one.
I'm leaning towards the bored theory myself on this one.
I'm leaning towards the bored theory myself on this one.
#19
x2. It definitely is the newer M97 block. I don't have any info on exactly what date or a date range where the blocks were fuzzy between Porsche still using the older and smaller bearing and the newer larger one but IIRC, this was only on '05 models. Considering this an '06 model, I would assume it would be the larger one.
#20
Different Jake chiming in here but yes that is the larger bearing. A split case would be required to change the bearing. A bearing is still available for it, just a lot more labor to do so.
http://lnengineering.com/products/im...-106-0821.html
http://lnengineering.com/products/im...-106-0821.html
#21
Thanks for chiming in! We love first-hand experience.
Different Jake chiming in here but yes that is the larger bearing. A split case would be required to change the bearing. A bearing is still available for it, just a lot more labor to do so.
http://lnengineering.com/products/im...-106-0821.html
http://lnengineering.com/products/im...-106-0821.html
#22
Racer
I have 1999 C-2 with replacement engine, #M9601AT66X66646. Did a little research on engine number and the last 5 numbers compared to engine numbers produced after 2007 were in the same range (66646). I suspected that my engine may have the larger non replaceable bearing without splitting engine case. I pulled the transmission and confirmed it had the 22mm nut, so I replaced clutch and flywheel and put trans back in. Have been watching the 997 forum to monitor failure rates and don't seem to hear about too many with the larger bearing.
#23
Different Jake chiming in here but yes that is the larger bearing. A split case would be required to change the bearing. A bearing is still available for it, just a lot more labor to do so.
http://lnengineering.com/products/im...-106-0821.html
http://lnengineering.com/products/im...-106-0821.html
#24
No problem. Happy to be part of the community and help out fellow enthusiasts.
That bearing would typically be replaced while you have the engine apart for additional work. This is not something I would recommend unless the engine was being split for another reason.
That bearing would typically be replaced while you have the engine apart for additional work. This is not something I would recommend unless the engine was being split for another reason.
#25
#26
Rennlist Member
now i have to think the mechanic screwed the owner - i highly doubt the mechanic had the special tool to "bore-out" the case in order to fit the new bearing??
and if he did have the tool, who in their right mind isn't going to charge an extra $2-$300 for labor to bore the case and fit the new bearing considering the amount of intrusion to the case??
Wheres the new bearing serial# tag - I am sure it can be traced back to the manufacturer thru the purchase order. i'd be all over this like a fly on sh_t
and if he did have the tool, who in their right mind isn't going to charge an extra $2-$300 for labor to bore the case and fit the new bearing considering the amount of intrusion to the case??
Wheres the new bearing serial# tag - I am sure it can be traced back to the manufacturer thru the purchase order. i'd be all over this like a fly on sh_t
#27
Race Director
You proactively had the RMS and IMS replaced on a car that was not leaking?
Even if the mechanic DID use the machine tool to grind a larger hole in OP's engine block, that's the kind of thing I'd want to mention to a customer IN ADVANCE - "say, in order to install this bearing, I'm going to grind a hole in your car with a lash-up tool that might - but might not - leave a bunch of debris inside."
I'm not a shop owner - but if I was, there would be a huge-*** disclaimer/release of liability to sign before doing that particular retrofit.
Even if the mechanic DID use the machine tool to grind a larger hole in OP's engine block, that's the kind of thing I'd want to mention to a customer IN ADVANCE - "say, in order to install this bearing, I'm going to grind a hole in your car with a lash-up tool that might - but might not - leave a bunch of debris inside."
I'm not a shop owner - but if I was, there would be a huge-*** disclaimer/release of liability to sign before doing that particular retrofit.
#28
Rennlist Member
You proactively had the RMS and IMS replaced on a car that was not leaking?
Even if the mechanic DID use the machine tool to grind a larger hole in OP's engine block, that's the kind of thing I'd want to mention to a customer IN ADVANCE - "say, in order to install this bearing, I'm going to grind a hole in your car with a lash-up tool that might - but might not - leave a bunch of debris inside."
I'm not a shop owner - but if I was, there would be a huge-*** disclaimer/release of liability to sign before doing that particular retrofit.
Even if the mechanic DID use the machine tool to grind a larger hole in OP's engine block, that's the kind of thing I'd want to mention to a customer IN ADVANCE - "say, in order to install this bearing, I'm going to grind a hole in your car with a lash-up tool that might - but might not - leave a bunch of debris inside."
I'm not a shop owner - but if I was, there would be a huge-*** disclaimer/release of liability to sign before doing that particular retrofit.
Last edited by groovzilla; 03-21-2016 at 06:19 PM.
#29
#30
It's not like replacing the bearing is simply removing 3 bolts, yanking it out, and hammering the new one in. Having to take the transmission out of the way for a new clutch/flywheel does cover some of the labor, but there is still certainly more to go.
I'd definitely want to see a detailed list of what was done and if that includes a new bearing I'd want to see the old bearing and a copy of their invoice for purchasing the part. $800 to replace what really appears to be a non-replaceable bearing definitely stretches credulity a bit.