tranny removal?. clutch chatter..

[green-lantern]

So I got the video for the trans noise. Ignore the video and just pay attention to the sounds.

3000gt/Stealth trans noise - YouTube


Edit: I would embed the video here but it seems Alan did not install the YouTube Link Parser And I'm not going to spend all night trying to guess/search as to what the BB Code tags are!

Mine sounds a good bit like that. I don't know if you heard it at BRG or not. I've been told it's TOB but I have a SPEC clutch and synchromesh in the trans. lol not to mention the OBX LSD.

With the car in neutral it's hard to believe it's a transmission sound though. A friend of mine had the issue and ended up putting a bunch of grease on the TOB and it stopped. From what I understand this is pretty common issue.

[DrGonzo]

Well when the trans is in neutral the internals are still turning. I have changed every part that supposedly causes it but it still rattles like crazy!!!

[green-lantern]

Well when the trans is in neutral the internals are still turning. I have changed every part that supposedly causes it but it still rattles like crazy!!!

I thought only a few parts move in neutral, the diff isn’t turning anyway. I’m not real sharp with transmissions though.

[TwIzTeD_3kGt]

Well when the trans is in neutral the internals are still turning. I have changed every part that supposedly causes it but it still rattles like crazy!!!

You haven't changed the clutch, which would be my first guess after listening to it.

[DrGonzo]

It's not the clutch making the noise. it's internal. I mic'd the trans and it is coming from inside the case not the bell-housing.

[J. Fast]

It's not the clutch making the noise. it's internal. I mic'd the trans and it is coming from inside the case not the bell-housing.

Glad you eliminated the bell and engine side.

Can you isolate it to a shaft? Try putting the stethi on the shift fork impregnations on the end cover and see if it resonates thru the shift fork rails. Then check the same by listening to the input shaft right near the end plug.

I was thinking you might have a piece of a shifter return spring or a detent spring that may have broke. That's really really common. A few of the trans I have opened have broken hub/slider springs. The springs get brittle and snap. They then lace together and the detent ball rattles around in the hub/slider. The roller balls bounce off the back of the gears like a popcorn kernel which makes it sound like a rattle.

Hopefully the info helps Greg.

[TwIzTeD_3kGt]

It's not the clutch making the noise. it's internal. I mic'd the trans and it is coming from inside the case not the bell-housing.

Does the car drive?

[CoreyB]

Reverse idler gear

[DrGonzo]

Does the car drive?

Yep car drives just fine!

Reverse idler gear

If so how do you go about fixing it?? What causes it?

[CoreyB]

I read about it awhile back, seems overtime the idler loosens, I have heard a heavier gear oil helps a lot. I had a friend with a trans in his RTTT that would kinda spool up and bang moving the whole engine. I put in the factory recommended oil and it never did it again.