Flywheel not balanced? Symptoms?

[217gsr]

I was talking to a friend earlier today, and he suggested that I consider that my flywheel may be imbalanced or the flywheel cover may be loose (If it is this, do I have to remove the tranny to tighten it?!).

I am STILL trying to figure out why my car sounds the way it does.

For those who don't know, here are the symptoms again:
- "WOBBLING" sound occurs in the higher rpm range (above ~4500-5000 rpm). This is the KEY sound/symptom.
- Only happens part throttle. Never happens full throttle (or 75% throttle).
- Is NOT speed dependent or gear dependent, ONLY RPM dependent.

I have not discounted a broken muffler or something vibrating in the exhaust system. But I have to say, it does not sound like metal on metal.

Anyone with ANY suggestions would be greatly appreciated.

[CivicR]

Have you changed anything recently on the car??...when did this "wobbling" problem start??...do you feel something in the steering wheel??....or is it just a sound?

[217gsr]

No, it's been happening for a while. There is no vibration in the steering wheel. It's pretty much "just a noise" coming seemingly from underneath the car (exhaust?). But I wouldn't describe it as a VIBRATION. It's definately much more like a WOBBLING sound ("wa-wa-wa-wa-wa...").

Unfortunately, I can't trace it back to any one thing that I did.

[BoostedEX]

Tires?

[GS-Raw]

^He?s saying it?s not speed or gear dependent but RPM dependent. So I highly doubt it would be the tires.

[217gsr]

Couldn't be the tires. I just changed my tires to Yokohama Parada Spec-2's like a couple months ago. I had the problem before that.

[217gsr]

I now have videos with sound. So you guys can actually HEAR what it sounds like. Anyone interested?

I have no where to host. . . so I'll have to email the vids to whomever is interested. Just let me know.

[CivicR]

Send it to [email protected]...I have my own domain and can receive large email files with no problems [img]smile.gif[/img]

[217gsr]

I take back what I said about the 3/4 throttle. It does make the sound at higher throttle pressures, but I just couldn't tell before because I couldn't hear the sound over the exhaust note. It seems intermixed with the exhaust note though.

Also, at a dead stop, revving the car into higher rpm ranges, then holding the throttle there. . .the noise is still there. So the car doesn't have to be moving for the noise to appear.

I doubt that this will clear anything up, but hopefully it will help.

[CivicR]

217gsr...I put you video on my website...the link is below

Video of 217gsr's car making the noise