Oil Leak
06-09-2014, 09:44 AM
#18
Former Vendor
The IMS is comprised of 4 individual components that are lightly press fit together. I have seen the shafts come apart (mode of failure #24 in my documentation) but only on the driven end of the shaft. This is the end of the shaft where the IMS has a drive chain that feeds mechanical input.
The opposite end of the shaft, where the OP has experienced a failure is the end of the shaft that sees the least amount of load, as it only drives one pair of cams, and the oil pump.
Knowing what I know, my assumption on this one would be that the failure the OP has experienced collateral damage stemming from elsewhere in the engine to cause this failure that is appearing to be the primary mode of failure. Something in the oil pump, or the 4-6 bank of cams is more likely to have occurred and created trauma that created the IMS assembly fail. I see these engines misdiagnosed all the time.
At the dealer you'll pay 50% more, so the 25% discount doesn't matter. It'll probably still end up needing to come to me :-)
The opposite end of the shaft, where the OP has experienced a failure is the end of the shaft that sees the least amount of load, as it only drives one pair of cams, and the oil pump.
Knowing what I know, my assumption on this one would be that the failure the OP has experienced collateral damage stemming from elsewhere in the engine to cause this failure that is appearing to be the primary mode of failure. Something in the oil pump, or the 4-6 bank of cams is more likely to have occurred and created trauma that created the IMS assembly fail. I see these engines misdiagnosed all the time.
At the dealer you'll pay 50% more, so the 25% discount doesn't matter. It'll probably still end up needing to come to me :-)
06-09-2014, 03:56 PM
#20
Former Vendor
Unless the smoking gun is found that caused this I'd not operate the engine at all. You could have the same thing occur again, or worse.
Based on the info posted I really don't see how this could be a primary failure. Seems a lot like collateral damage to me.
Based on the info posted I really don't see how this could be a primary failure. Seems a lot like collateral damage to me.
06-16-2014, 08:09 AM
#21
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Join Date: Oct 2003
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Update, decided to just get out of it then pay $7,500 for a rebuild. Dealer wanted $20K plus for new shirt block (less 25% from IMS settlement I guess). Only owned for 3 years,know on the hunt for a newer (non-IMS) model. Goodbye 986 forum
06-16-2014, 10:57 AM
#22
Rennlist Member
So how did you get out of it? Did you sell it?
