strange noise from front of motor at around 2800 rpm

[poorsche1]

yes the clattering starts at 2800 rpm. i didn't rev it to 6grand but as you give it more gas it climbs with the rpm. the sound is not a super loud pots and pans clatering or the sound of a spun bearing or broken rod, which i personally remember what those sounded like from my 914. but as you hit 2800 you hear a steel on steel rattle comming from the pasenger side. sound is there with no belt on so that eliminates all the usual culprits

[Jager]

Might be a lifter? I don't know how to test those, I end-up replacing all of them. Could it be an exhaust leak? Those can sound like metal hitting metal sometimes and have messed with my head. It would be in the area where the manifold/header bolts to the head.

[poorsche1]

did you have the same problem?

[Jager]

Not on my Boxster but other vehicles.

[poorsche1]

what eneded up being the cause?
you are saying exhaust might have something to do?

[Jager]

I have had exhaust leaks that sound like lifter or valve noises. The problem ended up being loose manifold/header bolts or bad manifold/header gaskets.

[poorsche1]

i will look for tell tale signs of exhaust leaks