Yes, I have searched. Didn't find my answer.

So let's start from the beginning. Car is a 2001 WS6, 80K miles. Around September/October of last year, my clutch was upgraded from the stock unit to a Monster Level 2. Included in the install was a new slave, new pilot bearing, all new trans/clutch fluid of course, and a remote bleeder.

The installer is reputable and is very familiar with LSx cars. He did a great job so I doubt it had to do with that. After the install I did the proper 500 mile break in as per Monster's instructions. When it was broken in, car had no problems whatsoever. Shifted perfectly into gear cruising, perfectly when I was shifting quick at the track. No problems at all for a long time.

Eventually the 10 Bolt took a poop, and I had to replace it with another piece of **** 10 Bolt with low miles out of an A4 car with 3:23's (Yea I know, gross). Fast forward to about 3 months ago and the problems begin.

While driving normally the I started to notice that the car would slightly grind. It wasn't every time, and it varied which gears. Nothing major, not hard to get into gear but just a grind. The clutch pedal felt different from normal by a bit too. After a while it actually went away, which I thought was strange. The only time it would grind (a little more grind this time) was if I tried to shift fast. It would also lock me out of gear if shifting fast occasionally. Very frustrating. Clutch pedal I noticed felt spongy, and sometimes (not often) when cruising it wouldn't let me into gear at all. I would have to go to neutral, pump the clutch a few times and then it would go in.

I decided I would start with the master cylinder and go from there. So tonight I replaced that. I did the drill mod on it, installed it properly, bled the system etc. After the install, the clutch felt WAY better. Very noticeable difference. Went into gear perfectly just cruising around. I tried doing about 3-4 pulls shifting fast to see if this fixed my issue. Nope. Still grinds and or locks me out when trying to shift fast. I was very mad at this point.

It's probably also notable that when under hard acceleration, even from when I first had the car, there sounded like vibration from the trans/shifter area. I don't know how to describe it too well, nothing horrible but just not completely quiet.

Sorry for the essay but I wanted to say everything. Anyways my question is, do you guys have any ideas? What could it be and where should I start next? Slave maybe? Internals on the trans? To be honest I REALLY don't want to have to drop the trans even though I know I'll probably have to. Any advice from you T56 gurus would be greatly appreciated. If I can't do it myself I'll take it to someone, but I'd like to avoid that.

Thanks in advance!

 

i really cant help you on the grinding issue, my stock one does that from time to time but never locks me out (all clutch parts are stock on mine) however i also had the vibration under hard accel. and tracked it down (after searching forever) to be the actual shifter nut and **** try taking it off somewhere and getting on it a bit, might be the same issue, mines aftermarket

 

Assuming you are getting full clutch release, the grinding could be the result of the blocker rings being worn down and not properly controlling the speed of the gears during shifts. These rings have friction linings similar to a clutch and if they are worn, its rebuild time.

 

The shifter nut and ****, as in where the stick connects to the shifter?

Thanks for the help

Yup, the clutch is releasing.

Ok, thanks for the help. I'm not to familiar with trans/clutch systems so I'll do some research on that and check it out. Thank you.

 

yep assuming you are getting full release then yes the only thing left is the internals. whats odd if that you say it does it in random gears. usually a synchro will isolate on one gear. in the video below you'll see what were talking about and how a synchromesh tranny works. but as said above there are "cones" on each gear and when you apply pressure from the shifter to enter the next gear the synchro ring with its clutch material grab the gear cone and spin it up to speed in order to ready it for the shift.

if the clutch is released before the shift is complete that will causing the grinding which is what you hear when you miss a shift. what is probably happening in your case is the synchro rings are worn and cant spin the gears up to speed fast enough thus the grind. be careful here because too much grinding can cause you to round off the engagement teeth of the gear which will result in a gar replacement.

 

[QUOTE=LS1rob00;16969224]The shifter nut and ****, as in where the stick connects to the shifter?

up thats where mine vibrates, its kinda annoying and im thinking its the threaded part inside the ****. i havent tried a fix yet, but the stock **** might go back on