RotorRX

I was wonder what this could be? When I let the clutch out, I hear a noise from the transmission. When the clutch is pushed in that noise goes away. Any one have any idea what this is, and what I need to replace. I have my engine and trans out right now, so I would like to fix it.

Thanks

rotary>piston

throwout bearing.

sonic7

iTrader: (1)

if you go to www.mazdatrix.com there is a troubleshooting guide to help with disecting strange problems like these... My friend had the same problem... but it turned out that it was not the throwout,, it was the tranny just being old.... a replacement was in order...

Justin

SureShot

The spinning gears will "wirr" louder with higher miles.
If you have not already done it - change to synthetic gear oil.
That stuff is almost magic in your tranny.

RotorRX

I dont think it is the throwout bearing. I think that would make a "wirr" sound when the clutch is pushed in. Guess I'll just switch to synthetic.

If anyone else has some idea just let me know

theonlygreat

throwout definately makes noise when clutch is out not in

Turbonut

iTrader: (1)

Correct, not throwout bearing. When clutch is engaged, trans main shaft not turning, so no noise. Conversly, when clutch disengaged, trans gears begin to turn. Depending on amount of noise and mileage, it may be time for a rebuild. Was trans shifting without grinding before it was pulled? If ok, just put synthetic in there and give it a try.

RotorRX

The trans was not giving me a problem besides the noise. It is not loud just annoying. Someone told be it could be the transmission input shaft bearing?

Moxeys93RX7

my car does the same thing. while driving or sitting with the clutch out. i changed the fluid with regualr gear oil and it didn't help much (but shifting is smoother). i don't know if it has anything to do with it but when i pulled the drain plug almost 2qts shot straight out of the tranny. got all over everything. i don't know why but somethign caused alot of pressure buildup

skyypilot

Umm, you and I have a vastly different opinion on what engaged and disengaged mean....

Turbonut

iTrader: (1)

SORRY!!!!!
Yea, in my hast at work, and on the phone, just got it reversed. Pedal out clutch engaged, trans turning, throw out brg not turning. Pedal in, clutch disengaged, trans idle, throw out brg turning.

RotorRX

Wait a sec then. Mine makes the sound when the pedel is out. Is that the throwout bearing? I would really like to have it be the throwout bearing since I am changing the clutch and putting a new TO bearing on.

~Anthony

Turbonut

iTrader: (1)

Anthony,
Sorry for the incorrect info. If pedal is up, clutch engaged and the throw out bearing is not turning, but the trans is. The only time the throw out bearing turns is when pedal pressed and bearing rides on the pressure plate to remove force on the disc, then the disc and the trans doesn't turn. Must have had a 100 plus transmissions out of cars, and still posted that dumb reply..Must be old age.

RotorRX

np, thanks for the info.

RotorRX

Hopefully I can help fix the problem by putting some syn oil in it.

F1blueRx7

iTrader: (5)

I had the same problem. I replaced both the throwout and pilot bearing and it's gone now. But I know for a fact it was the pilot bearing because when i removed it I could feel alot of grinding and squeaking when i tried to move it around. The new one is smooth and makes no noise.

RotorRX

I have a new pilot bearing but hear it is a MPITA to take if off. What did you do to get it off?

Hot_Dog

The input shaft bearing is most likely causing the noise, but it may also be the countershaft bearings. The input shaft bearing can be replaced without tearing apart transmission, but you'll need a gear puller with long arms (maybe about a foot or so). You first remove the front cover, and then the lock ring on the inpup shaft and lock ring on the outer race of bearing. If you place the arms of the puller into the groove (where lock ring was) in the outer race, than you can pull the bearing off the input shaft. Use a piece of pipe with ID slightly larger than the input shaft to drive the new bearing on. IIRC, the FSM may have a write-up on this.

Hot_Dog
90 RX7 GXL
02 RSX-S

F1blueRx7

iTrader: (5)

Input shaft bearing is the same thing as a pilot bearing. And yeah I used an actual bearing puller from snapon but it worked perfectly.

-mike

Turbonut

iTrader: (1)

With the clutch pedal out, all parts reciprocating the same speed, no load on pilot brg. Pilot brg will only be turning when clutch pedal pushed down, or disengaged.
At that time the main shaft is idle, and flywheel is turning, therefore pilot brg would be in use.

RotorRX

So I hear it could be either the input shaft bearing or the pilot bearing? Anyway to figure out which one it is?

jacobcartmill

iTrader: (6)

throwout bearing

PJ-4.2L

HAHAHAHAHA!!! This thread is hilarious! Well, whatever the case may be, it's a good idea to replace ALL of your bearings while you're in there. I don't think the pilot bearing=input shaft bearing. The pilot bearing resides in the flywheel. The bearing that mosly likely makes noise in this case (my case too) is on the tranny, holding the input shaft. Does anyone know how much this bearing costs?

PJ

RotorRX

First why is this threat so funny Anyway I think if you read it the thread you will find that I or anyone else ever said pilot bearing= input shaft bearing. I was just wonder if there was an easy way to figure out if it was the inputshaft bearing since I was hoping it would not be that one.

F1blueRx7

iTrader: (5)

ok let me spell it out for you:

The Bearing that the input shaft sitins at the end of the eccentric shaft is the PILOT BEARING call ACT they will tell you.

Here is a picture:
http://www.mazdatrix.com/f86-92nt.htm

This is also refered to as an input shaft bearing... i wonder why? Maybe it's because the input shaft rests in it... HMM!

Now: When you take your foot off the clutch with the transmission in neutral, if they bearing is worn, then it will make a noise, because the input shaft is standing still while the E-Shaft with the bearing in it is rotating around it. Make sense now?

Don't make me use MS paint to draw you a picture jacobcartmill style.