SharkSkin

Re-check torque on pinch collar.

69gaugeman

It is very much near the clutch as the loudest, maybe torque tube bearing.

AO

What's weird is the frequency... Wouldn't you expect it to be more rapid if it were clutch? Oh well, I'll tearinto it after I get back from vacation.

69gaugeman

It's that it is under load that causes the sound. Could be the coupling.

Jim_H

Yes.
Great Video unfortunately it leaves more questions than answers.

It seems the noise is more consistent going backwards?

Jim_H

In your vid there is also a good example of what a properly functioning fuel pump should sound like at start up.

Garth S

Well, for another thought .... I recall you having a bag of fun getting the circlip into the thrust/release bearing slot. If there is any misalignment there, the bearing will rub against the plastic guide sleeve that screws to the rear of the bellhousing: ditto if the sleeve is loose. Also, at some point in time, didn't the sleeve size change? Perhaps that was long before the GTS clutch.
Don't let this spoil the vacation ...

AO

I'm pretty sure the circlip made it in flush. The guide tube/sleeve is new. But it's gona sit until I get back.

Tom. M

Andrew..

Give it some time. When I did my clutch rebuild I used a NOS Sachs part off ebay...great part...but probably sat on the shelf for a very long time. When I first started it...sounded like a bad release bearing....Adam B suggested that the grease in the bearing may have settled a bit while sitting...after a week or so of driving the sound went away never to come back.

Drive it..get everything nice and hot..and chances are the noise will go away..

Later
Tom
89GT

AO

Good suggestion, Tom. It was quiet when I first took it out. Today I had it up to 110. After coming back that's when i noticed it. I'll probably drop the lower BH cover, take a gander just for peace of mind.

Nicole

I don't have any specific advice to offer for this noise, but something about noises in general; something I learned from Bill Ball:

If you need to locate the source of a noise, or rule out a source, use some hose, hold one end to your ear, and move the other end around the suspected source of the noise. That's how we diagnosed the defective AC compressor bearing, and a mysterious whine in my alternator. I have since used this technique for a few other noises and found it to work very well.

Best of luck, Andrew!!!

AO

Nicole-
I've got a mechanic's stethescope, but I couldn't figure out how to use it while driving! So the camera trick came to mind. Thanks for the tip though.

hupp

I agree with Sharkskin, check the pinch collar. It is possible to install the collar with the splined shafts off just a little bit. Loosen the bolts on the collar (leave the collar in place), pry the release arm back then release the pry bar. This will center the short shaft with the TT shaft. Now slide the collar back on the TT and check to see if the splined shaft moves freely in and out. If so, install collar.

heinrich

Aww shhheee-it Andrew. First thing to do is pull the bellhousing cover. Nothig to do before you LOOK at it. Next I would say the most likely suspect is .... did you grease where you should have? Use the right stuff? What's the deal with the two bearings, did you replace both? Pres in properly?

Relax Bubba, this is what makes life fun

chaadster

Maybe you ingested a seagull, and it's wedged somewhere in the engine bay...

I've really got no idea as to what the sound is, but the video is quite novel! What a great way to put technology to work for you!

Sorry I can't be of any help.