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does this sound like a bad input shaft bearing? my dad thinks its a T/O but from what I've read it's my ISB, because the noise occurs when the clutch is engaged (pedal is up)

let me know if the sound quality is bad, and i can post a new vid.

 

http://www.youtube.com/watch?v=7BMxPtAwSw4

here, sorry.

 

oh gawd, that sounds horrible.

Doesn't sound like ISB, though. My buddy's old hatch had a bad ISB, and it was more of a subtle, high pitched whine.

 

ruh roh. im prepared to take this bitch off again, i just need to know what parts im replacing. im not sure what it could be if its not an ISB. I had a thread going but no one replied to it.

https://honda-tech.com/zerothread?id=2296480

i know its def a tranny related issue

 

WOW, my is guess pilot bearing. My ISB has been wining for years, doesn't sound like that.

[Quote = hushpushy]My buddy's old hatch had a bad ISB, and it was more of a subtle, high pitched whine.[/Quote]

That's what I'm talkin' about.

 

pilot bearing?? [freak].

anyone else??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by obuhmyuh &raquo;</TD></TR><TR><TD CLASS="quote">pilot bearing?? [freak].

anyone else??</TD></TR></TABLE>

[freak] @ the disassembly, pilot bearings are cheap! I hope that is the problem honestly (because of $$$).

 

haha i know, this'll be my second time taking my tranny out, I HATE IT. I would rather yank my motor.

the only thing i can think of is that i may not have properly greased my T/O bearing when I did my latest swap. It's a d-series tranny btw.

throwout bearing and pilot bearing are synonymous, correct?

 

I replaced the mainshaft bearing on the opposite side of the mainshaft to the input shaft bearing. Your noise is totally unlike the noise my VX tranny made.

The pilot bearing centers the end of the mainshaft at the flywheel. The pilot bearing is pressed into the flywheel center.

The release bearing (proper name for throwout bearing) is outside the transmission case altogether - not with all them slippery gears. The release bearing does what the name indicates - it releases the pressure plate from the flywheel so that the transmission spins independently of the flywheel.

The noise your tranny makes sounds too regular to be caused by a worn bearing. My guess is your tranny has parts rubbing together that shouldn't be. If you replaced the input shaft bearing the last time you had the tranny out, you might have changed the thrust shim clearance/spacing on the mainshaft. There's a procedure used to measure the spacing and select the proper thrust shim to achieve the standard clearance which is 0.11 to 0.18 mm. The helm manual shows what to do. Luckily, my replacement bearing was exactly the same height so nothing changed and it's been fine ever since almost two years later.

 

i didnt replace the bearing when i had the tranny out though... i replaced clutch, throwout, and pressure plate.

 

i took it by my local tranny shop, and he told me it's not an ISB or T/O, but it's an internal gear thats worn down that has something to do with the main bearing. He quoted me some $450+ to take it apart and more money to fix it. He also told me it would still be about 400 bucks if i took the tranny out and brought it to him.

With that said, I'm gonna start shopping for a new tranny

im thinking an lx/vx tranny? my dx sucks

 

hey guys, getting back to you... this whole thing seems to me to be a bad throw out bearing. a similar noise occured with the previous tranny, so i swapped it out thinking it was something more serious, but upon inspection of my old t/o and my recent t/o it seems to be the problem.

 

you can see in the pic above that the retaining clip that holds the t/o bearing to the fork is broken, IMO that noise in the video was caused by either the t/o bearing shaking around, or the piece that broke off was loose and rolling around in my tranny.

i have an all new ex tranny in it right now, but just out of curiousity, what does everyone else think?

 

You didn't mention that the noise went away with the new EX tranny - it did right?

You did install a brand new release fork with the new tranny, right?

I dunno about your theory. To be so, the T/O bearing would have had to been chattering on the mainshaft somehow when the clutch was disengaged. This does not compute since the T/O bearing does not/ or should not be contacting the pressure plate when the clutch pedal is released. The release fork should pull it back all the way to the bell housing even if one of the fingers was on the T/O bearing was bent.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jadziasman &raquo;</TD></TR><TR><TD CLASS="quote">You didn't mention that the noise went away with the new EX tranny - it did right?

You did install a brand new release fork with the new tranny, right?

I dunno about your theory. To be so, the T/O bearing would have had to been chattering on the mainshaft somehow when the clutch was disengaged. This does not compute since the T/O bearing does not/ or should not be contacting the pressure plate when the clutch pedal is released. The release fork should pull it back all the way to the bell housing even if one of the fingers was on the T/O bearing was bent. </TD></TR></TABLE>

yes it did go away. and that finger wasn't bent, it was broken off. and no i didnt replace that fork, its in perfect condition, and to be honest i didn't even think to buy a new one.

 

my car is doing the same noise i think it is the input shaft bearing

 

i have a 95 honda civic si d15b sohc vtec