Unknown material in oil filter?

[Liamray]

Originally Posted by thstone

Wow, that's a LOT of green material!

If you found that much from just one oil change, there must not be much left of that part.

Yes it was owned by an 82yr old guy and I don't think he drove it much in the last 3yrs he owned it (only 5,000km), and I reckon that it sat for long periods and that would have allowed seals and o'rings to dry and perhaps deteriorate and crumble?

Anyway I've decided to err on the side of caution and replace the variocam tensioners and timing chain tensioners just to be safe, along with the IMS bearing of course.

[P_Carfahrer]

Originally Posted by Liamray

Anyway I've decided to err on the side of caution and replace the variocam tensioners and timing chain tensioners just to be safe, along with the IMS bearing of course.

Fun job.. I did mine over the winter. Pulled the motor to do it. Biggest PITA is laying the bead of sealant in the valve covers properly.

When you mention timing chain tensioners, are you talking about the four tensioning paddles or the three screw in tensioners?

[Liamray]

I will be replacing the ‘variocam tensioners’, the 3 screw in tensioners and the paddles that I can reach without splitting the cases. When I say I’m doing it that’s not entirely true, though I’ve removed the transmission and have the engine ready to drop out, I have a Porsche Mechanic doing the work on the engine.

[Liamray]

Originally Posted by Liamray

I will be replacing the ‘variocam tensioners’, the 3 screw in tensioners and the paddles that I can reach without splitting the cases. When I say I’m doing it that’s not entirely true, though I’ve removed the transmission and have the engine ready to drop out, I have a Porsche Mechanic doing the work on the engine.

Finished replacing all the Cam and Timing Chain Tensioners, the ‘Variocam’ Tensioners were very worn and the lower pad (closest to the engine) was by far the worst. I dissected the Variocam Tensioner and found that the Phenolic Seals in the tensioners had worn the bore of the tensioner and was allowing oil to bleed past so that the tensioner couldn’t operate correctly. I checked the rest of the engine and everything looked good, some slight scoring on just one of the cam journals but none in any of the rest.
After doing the work and putting the car back together, it ran like new with ‘NO’ dreaded chain rattle at start up, and the performance was so much better than before the tensioners were replaced, found that one of the O2 sensors heating circuit was dead so have just ordered 2 new sensors, but even with the sensor the car goes and sounds so much better, and now it’s not embarrassing to start when people are around, before I had people ask me if it was a diesel!
Porsche should include all of the tensioners in the maintenance schedule, I’ve heard so many people on here complaining about the dreaded ‘Chain Rattle’, and have heard others say that it’s just normal, well it’s not! Since finishing the tensioners my car starts without any hint of a rattle at all!

[Starter986]

Originally Posted by Liamray

Finished replacing all the Cam and Timing Chain Tensioners, the ‘Variocam’ Tensioners were very worn and the lower pad (closest to the engine) was by far the worst. I dissected the Variocam Tensioner and found that the Phenolic Seals in the tensioners had worn the bore of the tensioner and was allowing oil to bleed past so that the tensioner couldn’t operate correctly. I checked the rest of the engine and everything looked good, some slight scoring on just one of the cam journals but none in any of the rest.
After doing the work and putting the car back together, it ran like new with ‘NO’ dreaded chain rattle at start up, and the performance was so much better than before the tensioners were replaced, found that one of the O2 sensors heating circuit was dead so have just ordered 2 new sensors, but even with the sensor the car goes and sounds so much better, and now it’s not embarrassing to start when people are around, before I had people ask me if it was a diesel!
Porsche should include all of the tensioners in the maintenance schedule, I’ve heard so many people on here complaining about the dreaded ‘Chain Rattle’, and have heard others say that it’s just normal, well it’s not! Since finishing the tensioners my car starts without any hint of a rattle at all!

I get that chain rattle the first start of the day. Once the car is warmed up and driven ... I can park it for a few hours... return to start it... and very little to zero rattle. It's that 4-5+ hours of sitting there and the next "cold" start the rattle re-emerges.

If that repair a DIY or shop job?

Glad to hear your rattle is gone.

Thanks!

[Liamray]

Originally Posted by Starter986

I get that chain rattle the first start of the day. Once the car is warmed up and driven ... I can park it for a few hours... return to start it... and very little to zero rattle. It's that 4-5+ hours of sitting there and the next "cold" start the rattle re-emerges.

If that repair a DIY or shop job?

Glad to hear your rattle is gone.

Thanks!

Mine was the same, first start in the morning it would get the rattle and if I left it for a few hours same thing, as I said everyone seem to say that it was normal, but after replacing the tensioners I now get ‘NO’ rattle at anytime I start it.

If your handy on the tools and don’t mind buying the ‘specialist tools’ i.e. cam locks and timing tools, then you can do it yourself. If I was you I’d try just replacing the 3 Cam Chain tensioners which are pretty easy to do, and see if that makes a difference. If it still rattles I’d then look at either replacing just the ‘variocam’ Tensioner Pads, or replacing the entire ‘variocam’ tensioner (as I explained I cut my variocam tensioners in half so I could look at the bore of the tensioners and found them to be quite worn where the phenolic seal is in the bore which let oil bypass the seal and that was preventing the tensioners from doing their job properly). The mechanic that did my work asked me if my car idled rough at any time, which it did intermittently, and he said that could be an indication that variocam tensioners could need replacing. Actually after the work was completed on my car and we took it for a run, the mechanic turned my variocam tensioners off one at a time and the way the car idled was exactly the way it would idle sometimes before the tensioners were replaced.
If you decide to replace your variocam tensioners I heard some people say that it can be done without dropping the engine, but after doing this job I personally think it would be a pain in the ass to do with the engine in the car. This is the first Porsche I’ve owned and I’m surprised how easy it was to pull the engine and transmission out of the car.

Anyway best of luck with your car, hope this helps.

[Starter986]

Originally Posted by Liamray

Mine was the same, first start in the morning it would get the rattle and if I left it for a few hours same thing, as I said everyone seem to say that it was normal, but after replacing the tensioners I now get ‘NO’ rattle at anytime I start it.

If your handy on the tools and don’t mind buying the ‘specialist tools’ i.e. cam locks and timing tools, then you can do it yourself. If I was you I’d try just replacing the 3 Cam Chain tensioners which are pretty easy to do, and see if that makes a difference. If it still rattles I’d then look at either replacing just the ‘variocam’ Tensioner Pads, or replacing the entire ‘variocam’ tensioner (as I explained I cut my variocam tensioners in half so I could look at the bore of the tensioners and found them to be quite worn where the phenolic seal is in the bore which let oil bypass the seal and that was preventing the tensioners from doing their job properly). The mechanic that did my work asked me if my car idled rough at any time, which it did intermittently, and he said that could be an indication that variocam tensioners could need replacing. Actually after the work was completed on my car and we took it for a run, the mechanic turned my variocam tensioners off one at a time and the way the car idled was exactly the way it would idle sometimes before the tensioners were replaced.
If you decide to replace your variocam tensioners I heard some people say that it can be done without dropping the engine, but after doing this job I personally think it would be a pain in the ass to do with the engine in the car. This is the first Porsche I’ve owned and I’m surprised how easy it was to pull the engine and transmission out of the car.

Anyway best of luck with your car, hope this helps.

Thanks, Liam!

I got to "... cam locks and timing tools..." and knew the repair was going to be out of my league. If I had a garage... I might jump into it. However, a carport with a car on either side has it's limitations. That... and a carport cubby that's 5x3x8 (I miss my former 3-car garage).

I don't get the errant idle... just a purr.

Final question: At what point do you say: Time to replace those tensioners?

Thnak you for the great explanation.

Cheers!