strange noise from front of motor at around 2800 rpm

[RandallNeighbour]

If I were you I'd call Jake. He'll give you the best advice on this forum.

[poorsche1]

ENGINE CLATTER
FINALLY FIGURED OUT HOW TO UPLOAD A VIDEO. you can barely hear the clatter on the video it is more a clatter.to me it sounds more like loose chains clattering. can the tensioner break or get weak and let the chain smack the case at a certain rpm? can the chain guides break? or is there something else that will make a clattering sound like that?

[jdiba]

Poorsche1, you find out what the issue was yet ??

[poorsche1]

been slow working on her due to time cosuming work project. but have managed to do the following so far
removed the belt to make sure it was not one of the pulleys-- noise was still there at 3000rpm
drained the oil--found nothing
cut the oil filter apart -- found a few really small pieces of brown plastic ( about 1/16" in diameter)
dropped the oil pan to see if larger pieces in bottom-- found nothing

put it back together put car on trailer and took it to a porsche mechanic friend of mine to hear the noise. he sais it is ims bearing or a bad tensioner.

about 2000 miles ago i replaced the ims bearing with a LN Engineering bearing and do not think it could have gone bad. so i will purchase the tensioners and swap them as soon as i can get a break in my schedule. will keep you posted

[poorsche1]

here is a pic of the pieces of plastic i found in the filter and a sacrilegeous but easy way i found to work on my cars. whats 2500 lbs to a 15000 fork lift?
i will post if the tensioners remedy the clatering noise

[clickman]

Those brown plastic bits look like what I and many others also find in their filters. Probably chain tensioner plastic. It'll be interesting to see what sort of condition yours are in if you replace them.

[jdiba]

That think is awesome ! LOL. Think about how much easier all our lives would be
as Boxster owners if they came with one of THOSE !

[heiwaz]

Originally Posted by poorsche1

here is a pic of the pieces of plastic i found in the filter and a sacrilegeous but easy way i found to work on my cars. whats 2500 lbs to a 15000 fork lift?
i will post if the tensioners remedy the clatering noise

The pieces of plastic maybe come from gasket, if they are soft, are gasket parts.

Did you found the problem of the noise?

[poorsche1]

well i am back. been on a project that has taken most of my time and any free time i had, was spent with the family. so i had not been able to work on the porsche. but now project is over and i am back in town and have been able to work on the Boxster. i changed the tensioners and yes the one under the AC was a pain and the result is that the sound is still there at 2800 RPM. a porsche mechanic came buy and told me that i had a bad vario cam guide or more that likely a broken valve spring. well tore it down yesterday and guides look good and springs look good. now the mechanic sais he is stumped could have sworn that i had a broken valve spring.
there are no codes in the computer
vario cam stuff look good
valve springs look good
tensioners are new
LN engineering IMS bearing
Idle is perfect
what else could cause a clatering sound at 2800 rpm
can it be a bad lifter how to test the lifters?
had a friend tell me it could be the flywheel. can a bad flywheel make clatering sounds that only start at about 2800 rpm
i am now stumped
any ideas guys
wife and the kids are out of the country on vacation for a few more weeks, i had planned on using my vacation time from them to change a broken valve spring. glad it wasn't a broken spring but what the hell is making that noise?.

the S has 41 000 miles on it i don't track it, drive it mostly normal, every now and then race some kid at the light but i paid for the car so i don't drive it like i stole it. I drive my v6 accord like i stole it most of the time and that stupid thing has 215,000 miles on it and the only thing i have changed on that is the oil and the timing belt. Porsche builds a great car but they need to take some seriouse quality lessons from the guys at Honda and Toyota.