Boxster Engine Failures - Some Clarity Please

[stelan]

I read somewhere that some 99's were less prone to an IMS failure for some reason, is that true or some 99 owner wishfull thinking BS?

[rick3000]

Originally Posted by stelan

I read somewhere that some 99's were less prone to an IMS failure for some reason, is that true or some 99 owner wishfull thinking BS?

Porsche 'redesigned' the IMS in 2001. The post-01 986's with the redesigned IMS are the ones that the IMS issue is primarily concerned with, and tend to have a higher failure rate than what would be considered normal (lots of debate about the percentages, and lots of threads on this as well). Pre-01 986's can experience IMS failure, but it is about as common as with any other car, so not that common. However, a lot of the companies selling IMS retrofits tend to ignore the pre/post 2001 differences for obvious reasons.

[mikefocke]

Originally Posted by stelan

I read somewhere that some 99's were less prone to an IMS failure for some reason, is that true or some 99 owner wishfull thinking BS?

About 8 times less for the '99 if it has the original engine. Figures from about 5 years ago and the higher figure admitted to at the time by Porsche in a lawsuit.

Having said that, the worst case was a 1% per car year figure as age and wear have added to the probability since then.

[stelan]

Originally Posted by mikefocke

About 8 times less for the '99 if it has the original engine. Figures from about 5 years ago and the higher figure admitted to at the time by Porsche in a lawsuit.

Having said that, the worst case was a 1% per car year figure as age and wear have added to the probability since then.

That explains the longevity of my 99 withoriginal untouched engine at 200k miles and it runs like new