How to tell whether: Throw out bearing VS input shaft bearing?

Shift518 Automotive
1

About 6 months after the clutch set was put in the SUBARU, and the pedal never feeling “fine” since - pressure plate? Clutch fork? Slave + master? Who knows.

Well now add this to the list - classic chirping noise, until you press the clutch pedal in.

However, judging by the fact that it’s new and the fact that the chirping noise happens occasionally, not always, and even at speed while in gear upto highway speeds I’m having my doubts about it being the TOB.

Any checks I can do to narrow down the issue?

I try to push in the clutch fork manually to no avail, too much pressure on it, however if the chirping is happening and I give driver-to-passenger directional movement to the fork, the noise either comes back or goes away depending on the location/angle of the fork.

:ohnoes

2

Who cares, you have to remove the trans to fix either one.

3

t-o bearing vlad

4

Yeh but I’d rather not split the housing if I don’t have two.

John - any actual tests for input shaft? I though TOB not supposed to make noise at speed or be always chirping not occasionally or once the car is warm?

5

the t-b is a sneaky bastard comes and goes when it wants to , as far as testin input gotta pull it down unf vlad

6

Ive had this happenn on every single honda ive ever owned, i changed prolly 5 throwout bearings with BRAND new ones and it still makes the noise

On my si it made the noise, changed the TO bearing, still made the noise, put a new tranny in it with another brand new TO bearing, still makes the noise

7

+1

8

On my gsr the tranny was out 3 times, replaced it all 3 times with OEM brand new TO bearings, still makes the noise

9

mine made noise with my old tranny. Put new tranny in with new bearing. Still makes noise.

10

Was the noise always there from the start or it slowly kreeped up, starting out as a faint noise and then becoming very loud, to the point where you can hear it while driving, with exhaust?

11

sounds like you suck at putting in TOBs

12

my honda had the same thing. it was the TOB the lead to the springs in the clutch disk vibrating loose and jamming into the pressure plate. I drove it home 5 miles like that holding the car in first gear lol

13

TOB if it goes away when you push the clutch in.

14

is there really a wrong way to do this? :Idiots

15

sarcasm

you

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Drifting

You

17

+1 had it in the SER

got emmmm

18

OE five speed input bearings are beefy, dowel located in the case halves, Timken needle roller. If that was going bad, you’d also have a nasty gear whine from the gearbox as the tooth profiles moved away from their roots(I.shaft and P. shaft distorting), on top of a big leak from the IS seal. I’ve rebuilt a shit ton of those boxes and have never had a bad input bearing in any one of them.

TOB. Five speeds are cake to drop. Even my skinny ass can bench one of those gearboxes. Soak the nuts 'n bolts underneath for a day, you can have it in/out in 4-5 hours easy. It’s not a turbo, hardly anything to remove from the car.

Personally I’d just leave the fucker till it starts to go bad…

19

Thank you Adam.

As usual no Tech thread is completely answered until you chime in :lol :bowdown

What are the signs of it going south(er) more so than just chirping now?

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g glad i said my 2 cents worth