Throw out bearing or something else on new clutch/trans rebuild- What's that noise with video?!

[jake2077]

I continue the build on my 1971 Bronco and have the transmission back in and working well, or so I thought. I hear the noise linked in the video below while not in gear at idle.

I had my son press in the clutch pedal and it does not change. It does go away when put into gear and slowly let out and the clutch is engaged although not completely. Seems odd and I have a sense of dread that I may need to drop the trans to figure it out. Thanks.

 

[hsach]

Is anything touching the flywheel? Sounds external to me, not internal.

 

[jake2077]

Is anything touching the flywheel? Sounds external to me, not internal.

Now that I think about it, the backplate between the bell housing and block was warped a bit but I put it back on figuring it would flatten out when bolted down. Could that be it?

 

[hsach]

That was my first thought. It sounds like thin metal against other metal.

 

[jake2077]

That was my first thought. It sounds like thin metal against other metal.

I bet that's it, great. That's a crap ton of work to replace a $39 part, sigh. Guess it's not detrimental to run for a bit while I finish the build?

 

[hsach]

I bet that's it, great. That's a crap ton of work to replace a $39 part, sigh. Guess it's not detrimental to run for a bit while I finish the build?

I would wait for some other to chime in before you tear anything apart, they might have a better idea of the cause. It has been a while since I've worked on a manual.

Also, just in case, I wouldn't run it. It doesn't sound like a very destructive sound, but you never know.

 

[jake2077]

I would wait for some other to chime in before you tear anything apart, they might have a better idea of the cause. It has been a while since I've worked on a manual.

Also, just in case, I wouldn't run it. It doesn't sound like a very destructive sound, but you never know.

I think it's the flexplate rubbing on the metal shield, that would make since.

 

[jake2077]

Just to close this topic out, I dropped the transmission and removed the flywheel/flexplate/clutch and you can see the issue. Replaced the shield plate with a new unit and put everything back together. Now she runs smooth and no sounds like before! A lot of work but worth it to know it's done right and won't be an issue going forward.

 

[hsach]

That is great news. Now its time to go have some fun!