Quote:
Originally Posted by Steve Carlton
What's the oldest 997 (if any) that's clear of bore scoring/IMS types of issues?
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There are none other than maybe than the Mezger engine motor cars. I don't think the Mezger motors have IMS. I'm not sure if they have bore scoring as a possible issue.
My understanding is that any Porsche motor with aluminum block and aluminum pistons with alu-sil is potentially susceptible to bore scoring, and anything with forged pistons is potentially worse. There are ways to minimize/retard it.
This page has 4 videos that talk about why/how it happens, what can be done to prevent/retard it, and what can be done after it happens.
https://www.pca.org/news/bore-scoring-series-1
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Steve
'08 Boxster RS60 Spyder #0099/1960
- never named a car before, but this is Charlotte.
'88 targa
SOLD 2004 - gone but not forgotten