So I've got a 98 rt, dual cam, manual trans, mid midlength header and a 3.0 CAI. I was getting a rattling sound, that appeared to be coming from the head, more towards the cam gears. I thought it was something in the head, So I swapped the heads. Same noise. I had an extra engine laying around, so I decided to swap that in, thinking that maybe I just had two bad heads laying around. Well, the noise is still there, and It's really, really annoying The best way to describe it is kind of like a playing card in the spokes of a bike wheel...ish... It gets louder as the rpm's raise, but it doesnt seem to keep a consistent rhythm with the rpms... Anybody got any ideas? I havent had much time to go investigate to see if something else is rattling, and I plan on doing that later today. So ill post back with some more details/results. Any and all hints, tips, suggestions, things to check would be appreciate, as Im tired of my car sounding like peanut.

Heres a link to the sound in an awful video from my phone.


http://www.youtube.com/watch?v=356Y7kaffj8

 

intake leak? idk just guessing.

 

Almost sounds like a chatter?

 

does it go away when u press the clutch? If so, throwout bearing has came loose from the clutch fork, or is going out.

 

Nope, its there when I push the clutch in. It also sounds like its coming from the opposite side of the car..

And yeah it sounds like a chattering. I got some advice from the other site, and they said that maybe its the bearing in the alternator? Im getting so sick of this car lol

 

does it get faster when u give it gas?

 

It seems to get faster yes.

 

What about an exhaust manifold leak? Or the heat shield?

 

I was also thinking it was the exhaust. From the manifold..

 

Well, I know its not the infamous DOHC manifold crak, becuase I had a manifold before, anda header now...could it be the header isnt attached all the way?