Porsche boxster ims bearing. What is the porsche ims bearing. The purpose of the intermediate shaft is to drive the camshafts indirectly off the crankshaft. Ims stands for intermediate shaft and the ims bearing supports the intermediate shaft on the flywheel end of the motor see here.
One theory for reason for failure on the early bearings is that the seal on the ims bearing itself can dry outshrinkstart to leak this can lead to penetration from engine oil more so with the thinner oils such as 0w40 that is often thought to be the best but not by us for these engines. 2001 2005 porsche cars. The exact rate of failure of these ims bearings is tricky to nail down with any certainty.
Intermediate shaft bearing upgrade kit for porsche m96 engines originally equipped with single row bearing. The m96m97 engines in the porsche 996 as well as porsche boxster and cayman models used such an intermediate shaft ims design. More carnage from a failed porsche ims bearing.
The purpose of the intermediate shaft is to drive the camshafts indirectly off the crankshaft. An intermediate shaft has been used ever since porsche developed the aircooled 911 engine starting in 1965 with the 20. Developed by ln engineering llc and flat 6 innovations the ims retrofit kit is the original replacement for the problematic intermediate shaft bearing in porsche boxster and 996 models with the m96 engine.
However the type of bearings used changed over the period and some were more prone to failure than others. There can be many contributory reasons for ims bearing failure and often it is a combination of causes that ultimately results in bearing failure. The truth about porsche ims bearing failure and how to fix it discuss early boxsters and talk of the intermediate shaft bearingbetter known as the ims bearingwill quickly pop up.
The first and original ims bearing replacement. This bearing drives the camshafts and can fail. Boxsters caymans and 911s from my1997 to my2008 are all at risk of ims bearing failure with the exception of turbo gt2 and gt3 models.
By using an intermediate shaft the speeds of the chains are reduced which is better for the chain life.
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