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Accelerating From engines to gearboxes--tuning the parts that make your car go.

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  #1  
Old 07-23-2012, 05:33 AM
Sin MINI Sin MINI is offline
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Default I may need a new throwout bearing...

My car was starting to make a subtle noise I couldn't isolate so I took it to my mechanic. He thinks its the throwout bearing (bad because my warranty doesn't cover that). I'm at 55,000 miles with a factory LSD, 15% pulley, JCW exhaust, and an Alta CAI.

What I've noticed is when I depress the clutch at high RPM to shift and get off the gas (to reduce engine noise) I hear a growl. If I shift to neutral and release the clutch the growl slows with RPM. If I down shift the growl comes back briefly (it's hard to hear over the engine so I'm not entirely sure).

Assuming he's right:

a) what kind of repair cost am I looking at (I suspect is the vast amount here)?

b) If he's gonna drop the tranny, is there something else I should consider having replaced? It's my daily driver, I figure pushing about 200hp with the parts I have (hoping to get a tune soon to push it up to 210-220hp). Flywheel? Pressure plate? Clutch plate?

c) Should I stick with stock parts? Trying to keep costs down, but if there is a cost effective performance upgrade (given the tranny is coming off anyway) that won't degrade the daily driving experience (clutch chatter for example), then I'm all ears.

Thanks!
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Old 07-23-2012, 06:59 AM
Chase Chase is offline
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the throw out bearing itself is very cheap, but the labor involved is very expensive. If you cant do it yourself, its always best to go ahead and do whatever mods you can while you are in there.

I always suggest going ahead and going clutch and flywheel. performance or not, now is the time for it.

I usually suggest an LSD, but you already have one.

I am not sure what the cost would be because it can range from $500 at a mom and pop or up to $1500-1800 at the dealer and more.

It is an expensive but labor intensive job. You have to pull the engine to get to it if that tells you anything.
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Old 07-23-2012, 09:00 AM
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Chase covered. It...


You have to do certain things. Change the clutch and flywheel while you're there.
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Old 07-23-2012, 09:28 AM
minsanity minsanity is offline
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Don't forget to check suspension/steering while subframe is off.
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Old 07-23-2012, 12:00 PM
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You don't have to pull the engine.
Just drop the front axle subframe and take out the gearbox from underneath.

Check on the control arm, gearbox, and engine bushings while you're at it.
If you haven't done it before plan for roughly 6 hours of work.
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Old 07-23-2012, 01:11 PM
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cole9953 cole9953 is offline
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Quote:
Originally Posted by Scotty View Post
You don't have to pull the engine.
Just drop the front axle subframe and take out the gearbox from underneath.

Check on the control arm, gearbox, and engine bushings while you're at it.
If you haven't done it before plan for roughly 6 hours of work.
yeah I didnt pull the engine, just loosen up the subframe bolts almost all the way and you can get it out, it really helps to have two jacks one for engine and another for the tranny
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  #7  
Old 07-23-2012, 03:22 PM
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emmerson_biggins emmerson_biggins is offline
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On the cold start with the clutch out you should hear a little chatter....when you push the clutch in it should go away.
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Old 07-23-2012, 06:29 PM
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mines on its way out too. I dont hear the same thing you are though. When I let the clutch out you can hear a pop almost if you let it out too fast.
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  #9  
Old 07-23-2012, 08:53 PM
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Quote:
Originally Posted by Scotty View Post
You don't have to pull the engine.
Just drop the front axle subframe and take out the gearbox from underneath.
This.

The bearing itself is like $60 from the dealership. The labor is whats going to get ya!

On another note, the pressure plate on my throwout bearing cracked in half but never made any noise.
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  #10  
Old 11-10-2012, 04:30 AM
niquemarshall niquemarshall is offline
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Yea also i noticed that when you let the clutch out slooooowly, it doesnt chatter, only when its let out really quick
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  #11  
Old 11-11-2012, 04:06 AM
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Many people have chosen to live with the noise. Apparently they can go for quite some time like this.
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