[QUOTE=j.fro;412482]
Quote:
Originally Posted by Jake Raby
The problem with the dual row bearing is it takes too long to fail...
LMFAO
Freudian slip coming from the Jake??
In all seriousness, Jake's bearing is an honest product and a great solution to a disastrous manufacturer defect. I'm running one in my 996. Sranton, I think you're on the right track.
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No, The dual row bearing remains at stage 3 failure far too long.. Trust that doesn't mean that I am saying that it takes too long to begin failing, because I am not saying that.
Once the bearing starts to fail it emits debris for way too long.. The bearing has already failed, it just allows the engine to run too long as all the processes take longer to progress into complete engine failure.
Last week we pulled apart a core that had a failing dual row IMSB. The bearing was still together and had not reached stage 4 failure yet. The crankshaft, every cam journal, and all the cylinders, the main oil pump and scavenge oil pumps were all wasted.
It was a classic example of a dual row bearing dying a slow, symptomless death and creating engine wide collateral damage of disastrous proportions.