I'm not sure what's going on here. I was driving along the freeway with no problems when I tried to shift into 5th. It wouldn't go in at all so I slowed down and drove to the nearest exit in 4th. When I got off the freeway, I noticed the noise you hear in the videos when the clutch is released. This noise occurs in neutral and in gear, but not when the clutch is pressed in.

I just had an LS7 clutch put in about 2 months ago and it's been doing fine. I didn't smell the clutch burning at all when this occured. Also, I can shift into any gear but 3rd now. No problems with the others. The stick feels stiff as well, but sometimes loosens up for no apparent reason. Randomly it gets verys stiff to the point where I can barely move the shifter from left to right in neutral. Any ideas? Videos below:

Video 1

Video 2

 

BTW, this noise is LOUD. You can hear it echoing off the other houses in my neighborhood. It's not like normal throwout bearing chatter. Any suggestions here would be very much appreciated.

 

Ttt.... Any suggestions at all? 50 views and no replies?

 

Beats me... Sorry I can't help.

 

Does it sound like it's coming from the transmission itself or inside the bellhousing? I know if it were my car, I wouldn't drive it at all sounding like that. I'd be pulling the transmission immediately.

 

Thanks for the replies guys. I put a stethoscope to the transmission and it definitely sounds like it's coming from there. Yeah, I'm definitely not driving it till I can figure out what's up and get it fixed.

I'm thinking maybe something with the input shaft? But would that give me a really stiff shifter? I just can't figure what could of happened because I wasn't being rough on it at all. Everything was smooth until I tried to shift into 5th and then smack, one big *** problem. I didn't miss the shift at all either, it just simply wouldn't go into gear. None of the gears have ever given me a problem before this either. This sucks.

 

Maybe pocket bearing?

 

I really wish I could help, but I honestly have no idea what could be causing that noise... sounds real bad. Good luck with finding out what it is and getting it fixed. Scary stuff

 

same thing here. It's in the shop getting repaired. Shop said on the end of the fork is a small plastic peace thats like a wear part that has come apart that what started the grinding then stripped the gear. The cost for this repair is about $2500.00, thank god for the warranty. Plus the shop is my brothers place so I know it'll be right

 

I'll take a stab and say its failed synchros. Fairly common, especially if you like to power shift

 

If it is doind it in nuetral, and only when the clutch is out I would about gurantee that is is the input shaft bearing. Not sure about the t56ers but some of the older 5 speeds would jump out of 4th(or whateber the direct drive gear is) when decelerating down a hill or something. Definatly pull it. With that kind of noise it souldnt be hard to find.It will also make this noise in gear with the clutch out if the input shaft bearing has failed.

 

Hey, thanks for the replies. Waltsfastz, that is exactly what is happening. It makes the noise in neutral and when in gear. Thanks for shedding some light on this for me.

Is it safe to assume it would be fairly inexpensive to replace the input shaft bearing? Never have had to do it before. Is it something I could do myself never having worked inside a transmission before? I have a Helms manual but it doesn't have any info on disassembling the tranny so I can't guage the difficulty. Also, why would this have happened? Just a freak or could something else have caused it to break? Maybe the guy that put my clutch in didn't realign the transmission properly?

 

You will have to remove all parts from the case. The input shaft is the last part to be removed. Go to T56Rebuilds.com to get a manual. These trannies are easy to work on. I would put in new blockers, shift pads, 3/4 fork and slider keys while you are in there. Might as well beef it up a little. Also check all other bearings and gears for damage.

 

Got it, thanks for your help.

 

Yeah what he said, If your going to tear into it go ahead and do a few upgrades to it. the reason it went out could be just a faulty bearing, if the pilot bearing is shot it may cause the inout shaft bearing to go out as well. Be sure to chek the shaft good, If the bearing has spun on the shaft the input shaft is proably junk, As well as the shims underneath the race if the race has spun.

 

Alright, thanks for the tips.

 

BTW If you find the pocket bearing bad in the unit, I will almost guarantee that the pilot bearing is also bad.Unfortunately the typical chain of events has the clutch install damaging the pilot bearing and opreration that way "breaks the back" of the trans= damages the pocket bearing.The only other ways the pocket bearing gets damaged is from a no oil/ low oil operation and / or excessive debris in the oil.

 

this could be a bearing or maybe not shimmed properly. My car was making a noise similar to that when the clutch was out. then when i pushed it in it stoped. I thought it was the input shaft bearing, but instead the little plastic oil funnel at the top of the countershaft extension got wedged under the race while i was puting the tranny back together, resulting in way too much preload, when there is supposed to be end play. so i replaced the bearing, and reshimmed it, and the noise immediately went away. Although yours seems to be alot louder than mine was, and you didnt go through the tranyn so that may not be it, but i figured i would try anyway. Goodluck with ur tranny, hopefully it isnt too bad.

 

So basically you're saying that if the trans oil was at the proper level and there was no debris in it, the mechanic that installed my clutch essentially screwed my car up?