not very likely in his case since he has a off road mid pipe.
If you can get someone to rev the car to certain RPM and see if you can hear it that way while you look around. Might be an accessory. If you hear it with the belt on and not sure where it's coming from. try taking the belt off to rule out the possibility of it being an accessory.
put the rear end on jack stands if this helps so you spin the back wheels
my alt. made a weird sound but only made it at 900-1000 rpm. any less/more it made no noise
The U-Joints will usually give a ringing or clicking sound when you are taking off from a dead stop or engine braking to a stop. They will also vibrate at speed. You will have to get under the car while well supported and give the drive shaft a shake and/or a twist. Any movement is no good (besides obvious slack in the transmission and diff).
A possible clutch related sound is the throw out bearing, but it will tend to make more noise when you have the clutch pressed in (ticking / clicking sound). Now if you get chatter when the clutch is engaging, it's probably just plain worn out. There are several things you might want to have repaired while you are in the area of the clutch (throw out bearing, pilot bearing, rear seal, re-surface flywheel, etc.)
A possible clutch related sound is the throw out bearing, but it will tend to make more noise when you have the clutch pressed in (ticking / clicking sound). Now if you get chatter when the clutch is engaging, it's probably just plain worn out. There are several things you might want to have repaired while you are in the area of the clutch (throw out bearing, pilot bearing, rear seal, re-surface flywheel, etc.)
As of right now I have something going on in the valve train at my # 1 piston. Haven't pulled it apart to look yet but I know that's definitely where it's coming from. At first I thought the "ticking/knocking etc..." was coming from under the car because I had the hood closed and the sound was traveling down making it sound like it was somewhere around the collector on the header. But after opening the hood I could tell it was coming from inside the valve train. If you ran the car without a sufficeint amount of oil for a while it may be the lifters...maybe I'm completely wrong...but just a thought...hope all goes well
I listened to the clips several times, even tried headphones, and I could not be sure when I was actually hearing the sound, and not wind noise or lens cap, etc. Maybe you can get the car up on a rack and duplicate the noise with someone underneath (?)
Okay, I think I finally heard at the beginning of clip 2. Very hard to tell, but it sounds engine related to me, maybe a light metalic sound like rod bearings or maybe lifter noise. It could be so many things. I would just keep a close eye on the oil pressure and go easy on the engine. It might last forever that way, or..... maybe not. Most of these engines that have 100k plus miles on them have a few noises that give them character.
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