Engine Drivetrain 1st Gen Cooper S Most liked posts in thread: Noise in transmission after Clutch/Fly/LSD install

Yeah, I had to call CM and confirm the direction of the disc with the tech dept, since there wasn't the normal sticker. Nonetheless, he asked which flywheel I had and didn't say anything bad or about incompatibility. He only told me to make sure that there was enough room on the FW side for the sprung hub portion of the disc. If not, flip it.

Everything had room, so I went with it. I installed the new release bearing and lubed everything accordingly. There is absolutely no noise when the clutch is depressed - not rolling.

On a side note, back in May, I installed the same setup in a friends MINI. Well, except for his being an FX200 and a Quaife. He has the chatter, but no noise while driving.

I'm beginning to think that the diff may have machining tolerance issues.
Like I said, this was taken out of a new Getrag 6spd. Could there have been any changes from my '06 trans (Dec '05 build) to the one delivered in '07?
Would doing more figure 8's help to break the diff in "more", resulting in quieter operation?
Could I have missed something when reassembling the trans? I would think that something bad would have happened right off, if that was the case.

With all this said, or typed, I may have to get a quality sound recording device and capture some clips. I'm not sure I want to drive 2 - 4 hrs to get a prognosis. I have only driven about 60 mi since the install and didn't think noise like this would be normal. Plus, I do not have the $$ for a busted tranny. I'd rather take everything out again, than buy a new one.

 

After getting a couple people to listen here locally, with and without placed mic's, the common deduction has been general gear noise. It is not speed sensitive, so no one thinks it's the LSD.

I am going to try and source some ShockProof and see how much it will quell the noise.

Thanks everyone for the help.

 

I have an additional thought on this.

I don't want to second guess the tech dept at CM, but since I mixed manufacturers products, I figure this might be the best place to pose a question.

As mentioned above, I called them to ask which side of the disc to place to the flywheel.
They recommended I place the more bulging of the two towards the flywheel. Meaning the side that has the springs fit into the recessed/dished part where the crank bolt-heads are.

So, here's the question. Could that have place the splines too far toward the end of the input shaft? Would the spline hub not being close enough, or far enough down, cause excessive vibrations?

Is there anyone out there that can confirm/measure the difference in depth of the clutch disc hub/spline, form side to side? Or just pull it out of your extensive knowledge.

 

Right, but with a flat, or semi-flat FW, this would make the most sense.
Are you implying that this is the accepted normal for all setups?
I asked the tech guy and he said as long as there was room, put it this way. Edit: the way mentioned in my post above.
Maybe the offset is not jiving.

I'm not going to have much of a foot if I keep shooting it.

::::Goes to get tools to dis-assemble again:::::: :crazy:

 

I'll give an update on this. I found some Lightweight Shockproof locally and poured it in.
It's been about a week now. I may mix light and heavy later and see what results I get.

It helped a little, but I still have noise after it warms up.
Actually most of the noise is when the motor is under load, below 2200 rpms and any rpm when not loaded (decel'ing). I don't have any binding (clicking, popping) noises, so I'm going to run it.

I did notice a slight change in shifting, though. Esp. after a few mornings here that dipped to 50ºF. It was pretty much back to normal after a couple miles travel.