My GSR started making this noise last night and it got louder after driving it today. It is louder depending on the load and comes and goes at idle. It is there while accelerating or decelerating. It is there if I'm coasting in gear and cut the engine off so It's not related to the ignition or fuel system it seems to be something mechanical. My guess right now is the water pump bearings or the tensioner for the timing belt. The crank pulley has a pretty good wobble at idle that disappears once the rpms go up but I don't know if that is related. I also thought it may be the crank bearings making noise if the pulley is wobbling. I recorded the noise here if you all have any ideas: Integra engine noise - YouTube

Thanks,

Ryan Curry

 

Sorry this is the link:

http://www.youtube.com/watch?v=SMk1K...ature=youtu.be

 

turned out to be an exhaust leak on the header close to the engine in between the primaries where you couldn't see it.

 

That's great to hear

 

would still check valve lash....sounds too metallic to be just an exhaust leak