Thread: Another one of these threads: Name that noise!

YouTube - Sr20det

Maybe I'm paranoid as usual, but the head noise seems a little louder than I remember. I'm trying to think if it sounds like lifter/rocker noise, or something. It's a little more pronounced on cold start than warm idle, which is making me think even more that it's head noise. I may pull the valvetrain apart and re-bleed the lifters, but I'm personally thinking "why do that when I can just upgrade to solid lifters?" That would make me want to do rocker arm stoppers while I'm at it.

Anyhow, if it's normal, call me a fool. If it seems something is louder than it should be, tell me that too.

I'm hoping you just call me a fool or tell me I'm paranoid.

On cold starts, it personally sounds more like piston slap or something. Forged pistons and rods FWIR make themselves well known on cold starts? Or is that just a myth...

TIA.

Oh yeah, and disregard the video itself. My goal was to record the audio thru the iPhone as well as possible. So nevermind my shoes or khaki's A man's gotta work!

cliff you need a stelthascope so you can pin point where the noise is coming from. I also think you are paranoid.


Mike

Are you trying to find a reason to upgrade?

btw, I vote exhaust. I think I can somehow part myself with my jgy manifold for your set-up and we can see if that fixes it.

just keep boosting and stop worrying if it blows up you can drive my car haha

Sounds fine to me until you get real close to the valve cover then I hear the ticking, however I do think the amount of noise you're hearing is normal. You're right about forged pistons making noise. That's what gives the diesel engine's their sound. I can be controlled with a higher ratio of silicon in the piston but that also makes them weaker. Put that audio through some software and find out the frequency so you'll know if it's head or bottom end noise. Sounds like head noise to me at first blush.

Did the noise just start getting louder all of a sudden?

you're paranoid.

my highport is making the same noises, hasnt gotten any louder and its been through a few track days...

Link to said software and I'm all over it I like this type of investigative work. If it helps me learn how to determine noises based on frequencies, it'd be an invaluable tool for future reference

I'm not sure if it started getting louder, or if it's been so long since I've driven the car that I'm noticing things I've never paid attention to before I'm just being overly cautious for no apparent reason. The whole low oil pressure chain oil squirter ordeal really has me worried about the motor overall. I just don't want to have it blow itself to smitherines. I wanna keep it as a daily for as long as humanly/mechanically possible. I can't be proud of the beast if I can't drive it every day

And thanks to everyone else for calling me paranoid I was hoping that would be the case.

LMAO!!! I do have an exhaust leak at the turbo =\ I can see the black sooty residue on the o2 housing where it's spitting out of the turbine outlet. REALLY annoying, and I smell like a friggin wrenchie in work clothes by the end of my drive home in the afternoon In cabin exhaust fumes ftl.



LOL! I don't wanna blow it up.:o

cliff a hand held vibration meter with perscion accelerometer is very expensive. I think the ones I had at work were at least 5k each.