Camshaft Bearing damage

[tt9714]

I just found the same problem on a 1999 Boxster (41K) miles except on 4-6 bank exhaust cam.

Camshaft itself shows minor wear.

Options:

• repair: would only be able to sand the damaged bearing area to prevent further wear/metal particles since entire head and cam cover is one matched set
• replace: I have another head + camshaft assembly that I could swap out from another engine. Do I absolutely need to get the block resurfaced before installing a new head gasket (would be logistically challenging)?

Thoughts?

[maytag]

Originally Posted by tt9714

I just found the same problem on a 1999 Boxster (41K) miles except on 4-6 bank exhaust cam.



Camshaft itself shows minor wear.



Options:

• repair: would only be able to sand the damaged bearing area to prevent further wear/metal particles since entire head and cam cover is one matched set
  
• replace: I have another head + camshaft assembly that I could swap out from another engine. Do I absolutely need to get the block resurfaced before installing a new head gasket (would be logistically challenging)?
  

Thoughts?

I'm not a Porsche expert, but I've got some extensive experience with other makes. So bear with me as I try to add something here.
You can sand/ polish the damaged surfaces, but you'll most likely have to take so much material to do it that you'll increase the tolerances dramatically. This would lead to an almost certain failure, as the cam end would oblong that hole in a hurry.
I'd replace it. I've got to think that with the IMS scare on these motors, the must be plenty with bad blocks, but good heads?

Good luck. Keep us posted?

Sent from my SM-G970U using Tapatalk

[JFP in PA]

Originally Posted by tt9714

I just found the same problem on a 1999 Boxster (41K) miles except on 4-6 bank exhaust cam.

Camshaft itself shows minor wear.

Options:

• repair: would only be able to sand the damaged bearing area to prevent further wear/metal particles since entire head and cam cover is one matched set
• replace: I have another head + camshaft assembly that I could swap out from another engine. Do I absolutely need to get the block resurfaced before installing a new head gasket (would be logistically challenging)?

Thoughts?

You need to replace the entire cylinder head and cams, that cannot be saved.

[Starter986]

Yes, in the "old days". You know, when people had the courtesy of introducing themselves before barging in.

I suppose the "rules" can't be updated.