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Discussion Starter #1
Hi Everyone - I just purchased a 2006 Cayman S with 70k miles (first Porsche!). The first 200 miles have been incredible.

After reading about IMS and bore scoring issues, I have become hyperaware of the car's sounds and behavior. Two things that are worrying me:

1. There is a quiet but audible rhythmic tick/squeak at idle (cold or warm)
2. The left exhaust tip has become slightly sootier than the right tip

Hopefully, I am just being paranoid. However, do these signs point to major mechanical issues down the road?

I have attached a photo of the exhaust and a link to a video of the car idling. This was after an easy 20 mile drive in the rain today.


Thank you in advance for any help!

Exhaust Tips.JPG
 

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2008 Cayman S
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Hmmm, it’s hard to tell exactly what that is... possible it’s an exhaust gasket? I sort of here that knock or whatever it is....
the IMS bearing cannot be fixed on your motor.. it’s a fixed bearing and if it did go the only thing you can do is a complete motor tear down... very unlikely that will happen... late 05-08 had this more robust style bearing, where 99-05 (early) had the replaceable bearing... what you can do to improve longevity on your IMS bearing is pull off the seal, it allows more engine oil to... make it into the bearing.... so when your clutch is due, a good time to do that... other than that other thing, it’s hard to hear correctly on an iPhone

scoring- couple things can help improve or prevent that.. Joe Gibbs oil, it really helps engine temps, less friction etc ... also a third radiator can and will help that.. cylinders 5-6 tend to be the hot sides... check LN Engineering, real great place for details....

paranoid? It’s always good to listening for new noises etc... I have the same car.... a new motor can cost close to your cars value.... find a good Porsche tech... it can’t hurt
 

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Discussion Starter #3
Porsche08, thank you for all of this information. I will definitely have the seal removed from the IMS bearing whenever the clutch is replaced. The oil was reading two bars (800 ml) low last night, so I filled it up. I will keep an eye on oil consumption over the next few weeks, as well. Fortunately, there is no smoke at startup. I believe that the soot on the tips may have been caused by the car running rich during spirited driving in the first few days of ownership.

Joe Gibbs oil sounds like a great idea. The third radiator seems like cheap insurance against scoring, as well.

I purchased the car from a reputable dealer with a clean bill of health. I would be surprised if there is a major issue, but would rather be cautious given the cost of a rebuild. I reached out to a nearby Porsche specialist this morning. Hoping to have them take a look in the near future. Thanks again!
 

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That's the sound of a healthy engine. Isn't this squeek from the chain tensioner? Or maybe just the camshaft doing its work?

This exhaust doesn't look bad - first of all learn the noise of a scored engine (youtube Jake Raby), ticking in bore scoring is a real ticking.
 

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That's the sound of a healthy engine. Isn't this squeek from the chain tensioner? Or maybe just the camshaft doing its work?

This exhaust doesn't look bad - first of all learn the noise of a scored engine (youtube Jake Raby), ticking in bore scoring is a real ticking.
He’s not lie’n ^. I just didn’t want to make a claim over this iPhone speaker...

im sure your motor is fine... and your very welcome
 

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Discussion Starter #6
Awesome! Thank you both for putting my mind at ease. Great tip about Jake Raby's videos - it seems like scoring creates a much more severe tick. I need to be right next to the wheel to hear this.

If it keeps up, I'll ask a tech take a look at the first oil change. Looking forward to many miles of fun.
 

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Discussion Starter #8
Porsche08, being very careful about that. I checked it warm, cold, and on several different "flat" surfaces. Around 700 ml brought it up to here. I'll take it for a spin and measure again before adding any more. Thanks again!
 

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987.1 Boxster S - 2005
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2006 is the 3,2 version right? The 3,2 litre engine doesn't suffer from bore scoring issues. The 3,4 with the forged pistons have bore scoring issues.
 

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Discussion Starter #11
Racergreg, thank you for the tip on the oil level - just took a ride and it is running well. Martin, the 2006 Cayman has the 3.4 liter M97 engine. This was carried over to the Boxster S for the 2007 model year. Unfortunately, as you note, it is known to suffer from bore scoring.
 

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It almost sound like the belt turning on the Pulleys which is normal . Maybe a lifter or something in the mix ? I don’t think I would worry to much about it though . Please keep in mind I’m no expert but I’ve had my fair share of cars .
Have fun driving it !
 
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