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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 and 2010 GT3
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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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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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I don't hear anything unusual but its hard to tell from a video - if you hear a ticking noise from the exhaust pipe than it's most likely a dual mass flywheel gone bad. if its only near the wheels then its most likely your injectors - they are noisy buggers - as for your IMS - it can be changed without rebuilding the motor. I have done a half a dozen as of recently and it works just fine - you need a special tool to reem the hole in the block and a special IMS bearing made by EPS. I would not recommend doing this if you are not mechanically and machinist inclined. you could find an indi that has the tool and experience to do it properly.
nice car
 

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I don't hear anything unusual but its hard to tell from a video - if you hear a ticking noise from the exhaust pipe than it's most likely a dual mass flywheel gone bad. if its only near the wheels then its most likely your injectors - they are noisy buggers - as for your IMS - it can be changed without rebuilding the motor. I have done a half a dozen as of recently and it works just fine - you need a special tool to reem the hole in the block and a special IMS bearing made by EPS. I would not recommend doing this if you are not mechanically and machinist inclined. you could find an indi that has the tool and experience to do it properly.
nice car
No kidding huh? I talked to a guy a while ago and said it could be done as well... couldn’t t find him again... good too know tho...
 

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you can rent the tool from EPS but I can't stress enough that you need to know what you are doing- if you screw it up it can't be fixed again. you have to bore out the block just enough to get the bearing out. there are 2 mil cutters but the secret is in setup of the jig.
269392
 

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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!

View attachment 269297
Get a Used Oil Analysis Sample next oil change and send off to Blackstone Labs. Go to there site for Sample kit and processing instructions. If abnormal internal wear is happening the sample will show all elements and there PPM (parts per million)!! They speak the truth!!
 

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I have 90K of very hard miles on my 06 S with +1000 miles hard on the track, no problems. Don't overfill the oil, it will foam and you will lose pressure when there is air in the oil. Get the lower temp thermostat and use some Water-Wetter in the coolant to reduce hot spots. Take it easy when the engine is cold. I don't hear anything in your video.
 

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you can rent the tool from EPS but I can't stress enough that you need to know what you are doing- if you screw it up it can't be fixed again. you have to bore out the block just enough to get the bearing out. there are 2 mil cutters but the secret is in setup of the jig.
That is awesome! I checked out EPS for more info and found a solid video with the process... But do you do to control swarf?
 

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Discussion Starter #19
harryrcb, Thank you for tip on the injectors! Either I have gotten used to it or the chirping sound has gone away. A race mechanic in the family suggested that it was probably just belt-related. The car was stored for a few months before I picked it up.

That's a very interesting way to change the IMS bearing. I wouldn't attempt it myself, but will definitely bring it up at the car's next oil change.

Really appreciate all of the advice and guidance.

cavediver, a Blackstone test kit is on the way (just in case). It seems like a great way to keep an eye on the internals as they age.

KKiani, I am being very careful with the oil. I nearly jumped out of the driver's seat after I parked on a slope and saw all bars filled in. It is currently reading one bar below the max, as it should.

On a related note, does anyone have a good Porsche mechanic in the CT/NY area? There are two indies (and a few dealerships) nearby. I have had great experiences with one of the indies but am open to any suggestions.

These cars are phenomenal - I had no idea what I was missing.
 
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