Soma

I installed a Exedy stage 1 clutch and Fidanza lightweight flywheel and replaced the pilot bearing and throwout bearing.
At idle I'm getting a lot of rattling. At first I thought it was my exhaust shield but I realized the noise will go away as soon as I bearly touch the clutch pedal. This leads me to believe either my throwout bearing or clutch fork is rattling.
It's as if there is too much play in the pedal. Being that it is a hydraulic type clutch, I didn't think it needed to be adjusted.
What do you think? Where should I go from here? Thanks!

Asterisk

iTrader: (3)

Dunno, I just noticed it in my car today, but it has 140K and god knows when the clutch was last changed, much less they cheaped out and didnt get the throwout bearing? Yours shouldnt do that... hmm.

JustJeff

iTrader: (13)

This may or may not be related. I had an odd rattling, which I thought was the throwout bearing. After having the clutch replaced I found that it was in fact a bad mount for either the tranny or the engine. Why the shop didn't do a better job of diagnosing the problem before doing the work is another story.

It was a few years ago so I forget the specifics of it. But the bad mount had my engine and tranny a little off-center which then put strain on the driveshaft u-joint. It was a ruined U-joint that was making my noise.

Soma

Interesting...
A friend of mine installed a lightweight flywheel and was getting a lot of shuttering. He replace the engine mounts and it solved the problem. He said something about the vibrations being more noticable due to the construction of the light flywheel.

As for my problem, im going to try adjusting the clutch pedal freeplay and see if that helps. Guess it couldn't make it worse?

Lizo7

iTrader: (11)

probably couldn't make it worse but its definitely not going to fix it. It sounds like the pilot bearing but could be the throw-out,

I wont post it because I cant remember if its correct but there is a way to check if the rattling or whine is the TOB or pilot bearing by paying attention to the whine and using the clutch. its around here somewhere

Matt

Soma

I adjusted the clutch pedal freeplay (adjusting the rod) to 1/2".
Started the car and no rattle!
Drove the car around approx. 5 miles, still no rattling!!
Got home, put the car in nuetal, got out and gave it one last rev to about 3k (just to look at how my RB engine torque brace I installed the other day was holding up) and the damn thing started rattling again!!!

I tap down and hold the clutch pedal in slightly, no noise.
Put the car in 1st, drive up a little, put it in reverse and then back up a little.
Put it back into nuetral and the rattling is still there.

Out of fustration I turn the car off, sit there for a molment and depress the clutch a couple of times.
After a few minutes turn the car back on and no noise...
???

Davidov

iTrader: (2)

According to some generic automotive sites. http://www.drivetrain.com/clutcharticle.html This is a transmission-related noise. I have a similar "whirring" noise with the trans in neutral, and the pedal NOT pressed.

Like you said, when I push in the clutch, the noise goes away. My noise started after I installed my engine [~2 years ago].
Maybe try realigning your trans? Loosen the engine-to-trans bolts, wiggle it around to make sure it's seated, and retorque the bolts.
Let me know...I've had this noise for quite some time.

JustJeff

iTrader: (13)

I've had similar issues in the past with a "whirring" noise while in neutral and the clutch out. Also, before I found that my similar problem was a tranny or engine mount I'd get a MUCH louder "whirring" noise. After the mounts were replaced....no noise.

Davidov

iTrader: (2)

Quote from RotaryResurrection;"The throwout bearings rarely go out and make a lot of noise. With a properly adjusted clutch pedal, the throwout bearing is AT REST and NOT SPINNING anytime the clutch pedal is not being pushed in. So...how could a part that is not spinning, make noise? It can't.

The pilot bearing does NOT spin all the time. As long as the clutch is not pushed in, the pilot bearing is also at rest.

The pilot bearing and the throwout bearing are ONLY in use when the pedal is pushed in.

Noise at other times is generally going to be internal wear on the transmission itself...the front mainshaft/input shaft bearing, or the teeth on the front 2 gears (mainshaft/countershaft) have wear."

[p.s. I have solid engine and trans mounts, so the "whirring" may just be exaggerated due to the mounts.]

Soma

Thanks everyone for all the responses!
I didn't realize how much of a headache a bad mount can cause.

There is definetely no "whirling" or "Whining" noise though. This is a straight up rattle/clunking noise. The strangest part is that it is intermittent and once the noise starts it will usually go away if I turn off the car and then restart it. The noise did get considerable louder once I installed the torque brace. I imagine this would be due to the engine vibrations being transferred to the transmission and so forth.

Davidov- Thanks for the info from RotaryResurrection!!
Very good information to know and I was wondering about that!

I tried adjusting the clutch pedal again but will mess with it again
tomorrow. I belive the problem lies in this area. I'm thinking maybe the
throwout bearing isn't resting completely against the clutch fingers and it
is either banging around or causing the fork to bang around.

Davidov

iTrader: (2)

You could have a bent pressure plate finger. It could be a number of things, your best bet may to be just take it back out and check it over visually.