bad throw out bearing?

[themeanest240]

s13 redtop sr20det.the clucth pedal is on floor no whinning niose.release clutch and whines pretty loud, no driving problems to my knowledge, i took 1st gear up pretty high yesterday and it kinda felt like slipping, but its suppose to be brand new clutch... is the whinin TOB?same thing bad in my civic gsr, but everyone is saying thats the input shaft bearing, all my smart car friends around here say TOB! idk help please

[Sil40_Mayhem]

Does the whining occur only when the pedal is between fully pressed and a few inches out? In other words, when the TOB is pressing against the diaphragm, is this when the noise occurs? Or is it when the pedal is released/clutch is engaged? Pedal pressed would = TOB. Pedal released = I dunno. I know mine (KA24DE) whines/groans when I press the pedal, but is fine when released. I was told this was the TOB (which I have yet to replace).

Anyway, hope that helps.

[themeanest240]

yea see mine whines when released only. when clutch is pressed to floor whinning stops. but im still getting feedback saying its TOBbut when i fully researched it i couldnt find my problem for bad TOB only your problem. anyone else have same problem as me?

[Neil]

doesn't make sense.. the only thing I can think of is maybe the assembly that the release bearing is pressed onto slipped off the fork and is riding on the input shaft a little bit. last time I pulled my motor out it looked like it had rotated itself almost enough to come off. that little spring clip is ..cheezy

but you'd think it would make some more telling noises when you engaged the pp if that were happening?

[S14toRPS13]

Had the same problem on my S14. When I released the clutch pedal I got a whining noise. It wasn't the TOB. It's the pilot bushing.

[Neil]

...but when your foot is off the clutch pedal, the transmission input shaft and the pilot bushing are rotating at the same speeds.

[T-rev]

I have the exact same problem, there was a thread on here a while ago about an "electric motor sound" My pilot bushing is brand new, oem nissan, made this noise from day one.

I run red line mt-90 and have a b&m shifter, I always thought that just made it sound funny

[Neil]

The only time the pilot bushing itself would make noise is if it were excessively worn or had lost sufficient lubrication (it is oil impregnated brass), and it would be a groaning noise that would only occur when it was rotating at a different speed than the transmission input shaft inside of it, i.e. changing gears or any time your foot is on the pedal.

I'm starting to think it's the transmission input shaft bearing, and that the new tighter tolerance pilot bushing has simply uncovered it by no longer allowing the shaft to lax that little bit.

[T-rev]

well the input shaft on the sr is the same diameter as the ka, what are the chances those are the same part?

[otterman]

s13 redtop sr20det.the clucth pedal is on floor no whinning niose.release clutch and whines pretty loud, no driving problems to my knowledge, i took 1st gear up pretty high yesterday and it kinda felt like slipping, but its suppose to be brand new clutch... is the whinin TOB?same thing bad in my civic gsr, but everyone is saying thats the input shaft bearing, all my smart car friends around here say TOB! idk help please

Sounds like you're just gonna have to pull the transmission and check it out man.

Make sure to check to see if the clutch it's self is ok.

I had what I thought was a tob problem but it turned out to be the clutch it's self. I wouldn't have even notice if my friend wasn't d!ck around with the clutch.

[themeanest240]

so should i replace the pilot bushing?or the input shaft bearing?it is silent when clutch in pressed to floor but loud whine when out.

[otterman]

I've never messed with the input shaft bearing.

The way you describe it now, it really sounds like a throw out bearing issue. I would put my money on that.

[Neil]

It's not the release bearing. The release bearing would only make noise when your foot is on the pedal, since it only spins when it engages the pressure plate.

As for SR/KA transmissions being the same, I know the ratios are the same and the KA works on an SR with the SR's bellhousing but I'm not about to guess whether or not the guts are 100% identicle...

But any time you change out a clutch, it should come with a new release bearing and pilot bushing. If you recently changed them, they are not what your problem is. However, in this case, I don't think they are your problem at all anyway.

It makes sense that it would be transmission related, since the sound stops with your foot on the pedal. When you push on the clutch pedal, the PP backs off of the clutch disk, and the input shaft stops rotating, because the clutch disk is what turns the input shaft of the transmission.

[themeanest240]

i guess all i can do is check it out.im going to change the TOB and see if that does it, there has got to be someone on here that has had the same problem...?how was is fixed, i dont know if this would have anything to do with it but i have a kaaz 2 way lsd? ive heard they're clutch type? or something????

[wzntha]

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[Neil]

It's probably not your Kaaz differential. The only way it would make noise is if the shims got mixed up when installing it and the ring/pinion gears aren't meshing properly.

When was the last time you changed your transmission fluid?

[themeanest240]

so its not the tob..is that all you have tried replacing?its a somewhat loud whinning sound almost like an electric motor when clutch released correct? when it sometimes goes away will it stay gone for awhile or come right back? you dont have any clutch slip?

i havent changed transmission fluid, only had car for 1250 miles.. will do soon tho. anyone else same problems?thanks for all the help guys!

[Neil]

Did the car come with the SR installed? If so, how long ago was the swap done?

When you buy a used car, you really ought to perform basic general maintenance on it, because you have no idea what the upkeep history is or how well the previous owner(s) treated the car. If for some dumb reason the previous owner didn't thread in the drain plug completely and it's been weeping oil for the past few months, that'd be a good indicator of why you're hearing noise..

[themeanest240]

yea forsure man, ok i can never find any good transmission fluids around here, i want redline mt90 is that good?what should i use.the car came with sr, swapped by phase2... still waiting on paperwork. he said this clutch has about 500 miles on it, and that they did the new clutch, not too sure if its all beleivable or not but we'll see when paperwork gets here.what transmission fluid should i run?

[Neil]

ah ha. Phase 2 are good guys, I'm sure they wouldn't have not put in fresh fluid at the time of install...

That said, I use Amsoil MTG. It's the same kind of GL-4 75w-90 oil like Redline MT-90 but personally I usually always go with Amsoil products for gear lubes.

Was the car making the noise from the day you picked it up? maybe try driving it back to them, see what they say? If you have a known good KA transmission lying around you can always install it with the SR bellhousing

edit: I got mixed up. You bought the car from someone, who had the swap done by Phase 2? doesn't really change anything.. You might want to at least get under the car, pull the filler plug from the side of the transmission and see if there's oil just below the filler level. if you stick your finger in there and cant feel a bath of oil then it needs to be topped up.

[themeanest240]

15 hours away lol...hopefully i can change fluid tomorow. if i can find some good stuff.ya if it comes down to it ill want to do that. its not a hard task is it?

[wzntha]

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