Subaru Guys (Drivetrain issues?) - KCSR

maynardDRIVESfast · 2016-02-22, 06:27 PM

I can't really get a good listen since I'm on mobile. However it seems like it would most likely be the throwout bearing since it goes away when the clutch is pushed in. Other than that, I'm pretty sure most aftermarket subie clutches rattle a bit. At least almost every one I've driven has.

snm95ls · 2016-02-22, 06:39 PM

Definitely an issue related to axle speed, AKA a diff bearing or something of that nature.

I'm not sure it's a CD bearing problem though.

MountainDew · 2016-02-22, 06:44 PM

DSMspick · 2016-02-23, 02:29 AM

Might be a wheel bearing.

Sent from my Nexus 6 using Tapatalk

RiskyRick · 2016-02-23, 02:32 AM

So, clutch in stops the noise or not?

bwiencek · 2016-02-23, 11:18 AM

I don't think it's a wheel bearing like DSMspick said - but try doing hard right and hard left sweeping turns at a constant speed when it's doing it and if the noise changes at all then it's a wheel bearing.

To me it sounds more front input bearing in the trans or the center diff / viscous coupler support bearings and the quickest would be to swap the trans assembly but really they're not bad to build if you wanted to just replace the offending bearings.

I had the unfortunate opportunity to tear into one after my brother's girlfriend had her car towed by a wheel lift truck and it burned up a lot of bearings in the trans due to the angle of the tow and lack of lubrication to some bearings at that angle and one set of wheels being locked to the tow truck in an AWD car... We couldn't prove a darn thing that I'm sure happened as they swore that it was flat-bedded and all their operators 'know better' but somehow it made a bunch of racket when she got it out and when I tore into it the bearings were burnt up and were so heat destroyed that it was apparent there was a lack of lubricaiton on 1/2 the tranny

MountainDew · 2016-03-02, 06:05 PM

criddy · 2016-04-15, 07:14 PM

it wouldn't be center diff issue. you will
feel binding when turning if something is wrong
with it.
throughout brg is good possibility if sound goes
away when clutch is depressed.
check rear axles and make sure they haven't
popped out of rear diff too.
clutch chatter is common if the flywheel is reused
when replacing a subaru clutch

criddy · 2016-04-15, 07:18 PM

you can drive car on lift and listen to front diff
with stethoscope if you think there is an issue
there.

MountainDew · 2016-04-15, 07:25 PM

2016-02-22, 04:43 PM	#1
MountainDew Join Date: Dec 2005 Posts: 18,792 Post Thanks / Like Thanks (Given): 282 Thanks (Received): 174 Likes (Given): 387 Likes (Received): 817 Dislikes (Given): 344 Dislikes (Received): 90	Subaru Guys (Drivetrain issues?) ... __________________ Last edited by MountainDew; 2021-01-10 at 11:30 PM..

2016-02-22, 06:27 PM	#2
maynardDRIVESfast Join Date: Aug 2006 Location: Wichita Posts: 3,438 Post Thanks / Like Thanks (Given): 40 Thanks (Received): 46 Likes (Given): 69 Likes (Received): 270 Dislikes (Given): 4 Dislikes (Received): 4	I can't really get a good listen since I'm on mobile. However it seems like it would most likely be the throwout bearing since it goes away when the clutch is pushed in. Other than that, I'm pretty sure most aftermarket subie clutches rattle a bit. At least almost every one I've driven has. __________________ Fun car? What's that?

2016-02-22, 06:44 PM	#4
MountainDew Join Date: Dec 2005 Posts: 18,792 Post Thanks / Like Thanks (Given): 282 Thanks (Received): 174 Likes (Given): 387 Likes (Received): 817 Dislikes (Given): 344 Dislikes (Received): 90	... __________________ Last edited by MountainDew; 2021-01-10 at 11:30 PM..

2016-02-23, 11:18 AM	#7
bwiencek Join Date: Feb 2004 Location: Greenwood, MO Posts: 2,362 Post Thanks / Like Thanks (Given): 0 Thanks (Received): 14 Likes (Given): 1 Likes (Received): 20 Dislikes (Given): 0 Dislikes (Received): 2	I don't think it's a wheel bearing like DSMspick said - but try doing hard right and hard left sweeping turns at a constant speed when it's doing it and if the noise changes at all then it's a wheel bearing. To me it sounds more front input bearing in the trans or the center diff / viscous coupler support bearings and the quickest would be to swap the trans assembly but really they're not bad to build if you wanted to just replace the offending bearings. I had the unfortunate opportunity to tear into one after my brother's girlfriend had her car towed by a wheel lift truck and it burned up a lot of bearings in the trans due to the angle of the tow and lack of lubrication to some bearings at that angle and one set of wheels being locked to the tow truck in an AWD car... We couldn't prove a darn thing that I'm sure happened as they swore that it was flat-bedded and all their operators 'know better' but somehow it made a bunch of racket when she got it out and when I tore into it the bearings were burnt up and were so heat destroyed that it was apparent there was a lack of lubricaiton on 1/2 the tranny __________________ Too many cars too little time...

2016-03-02, 06:05 PM	#8
MountainDew Join Date: Dec 2005 Posts: 18,792 Post Thanks / Like Thanks (Given): 282 Thanks (Received): 174 Likes (Given): 387 Likes (Received): 817 Dislikes (Given): 344 Dislikes (Received): 90	... __________________ Last edited by MountainDew; 2021-01-10 at 11:31 PM..

2016-02-23, 02:29 AM	#5
DSMspick Join Date: Aug 2013 Posts: 343 Post Thanks / Like Thanks (Given): 0 Thanks (Received): 10 Likes (Given): 0 Likes (Received): 21 Dislikes (Given): 0 Dislikes (Received): 5	Might be a wheel bearing. Sent from my Nexus 6 using Tapatalk

2016-02-23, 02:32 AM	#6
RiskyRick Join Date: Oct 2011 Location: Sedalia, Mo Posts: 2,489 Post Thanks / Like Thanks (Given): 77 Thanks (Received): 59 Likes (Given): 466 Likes (Received): 386 Dislikes (Given): 51 Dislikes (Received): 19	So, clutch in stops the noise or not?

2016-04-15, 07:14 PM	#9
criddy Join Date: Feb 2004 Location: lees summit Posts: 1,846 Post Thanks / Like Thanks (Given): 0 Thanks (Received): 0 Likes (Given): 0 Likes (Received): 4 Dislikes (Given): 0 Dislikes (Received): 0	it wouldn't be center diff issue. you will feel binding when turning if something is wrong with it. throughout brg is good possibility if sound goes away when clutch is depressed. check rear axles and make sure they haven't popped out of rear diff too. clutch chatter is common if the flywheel is reused when replacing a subaru clutch __________________ Chris f23 vtec block for free

2016-04-15, 07:18 PM	#10
criddy Join Date: Feb 2004 Location: lees summit Posts: 1,846 Post Thanks / Like Thanks (Given): 0 Thanks (Received): 0 Likes (Given): 0 Likes (Received): 4 Dislikes (Given): 0 Dislikes (Received): 0	you can drive car on lift and listen to front diff with stethoscope if you think there is an issue there. __________________ Chris f23 vtec block for free

2016-04-15, 07:25 PM	#11
MountainDew Join Date: Dec 2005 Posts: 18,792 Post Thanks / Like Thanks (Given): 282 Thanks (Received): 174 Likes (Given): 387 Likes (Received): 817 Dislikes (Given): 344 Dislikes (Received): 90	... __________________ Last edited by MountainDew; 2021-01-10 at 11:31 PM..