• They get less reliable in a roughly linear relationship with capacity - you can relentlessly thrash the smallest engine for eons and it'll be fine.

  • Noted, cheers. My understanding is that 986.1 don't tend to suffer from bore score, it's more IMS that is a worry, so looking at ones that either have had it replaced or due a new clutch, in which case will get it done and upgraded with clutch.

  • Noted, cheers. My understanding is that 986.1 don't tend to suffer from bore score, it's more IMS that is a worry, so looking at ones that either have had it replaced or due a new clutch, in which case will get it done and upgraded with clutch.

    Lots of opinions on the IMSB, my new engine has the final (997) iteration which is much larger than the 9X6 variants - you have to split the case to get it out.

    On my existing engine I've got the original bearing with the covers removed - we did it when the clutch was changed. Personally I am in the "if its lubricated then it'll keep working" and that there's loads of oil in that part of the crank case, it just needs to be able to get to the bearing.

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