after a dozen or so 10 second passes my trans is starting to show signs of failure, at least I think its the trans giving me problems...

My driveline consists of a stock trans, Mcloud twin disk, B&M ripper & cartek adj. master cylinder. When I got the car a few months ago the shifting was much too notchy for my tastes so I did the anti-venom mod and installed a couple of washers on the netrual detent ball which helped out a little. The next step was to adjust the shifter which also helped a little but was still too notchy for me.

Before I went to the track rental @ Atco on Tuesday in a last attempt to get rid of the notchy feeling I flushed the trans fluid, which still looked good, for some Royal Purple Syncromax which everyone said worked wonders. well for me it didn't help at all.

On the way home from the track I was having problems getting it into gear and especially reverse. when the car is off everything engauges smoothly, except for reverse. when its running first gear is pretty damn hard to engauge from a stop but it is easier if I'm already moving. Once the car is rolling I can shift the rest of the gears 2-6 'ok' but I wouldn't call it normal shifting, it still feels notchy and 'unsure' that it will go into gear.

To try and fix the problem so far I've adjusted and readjusted the shifter and that did nothing. I installed a stock C5 shifter and that did nothing either. I've also tried adjusting the cartek clutch master cylinder in every position the pedal would allow but no help. I'm not having problems getting out of gear, just into gear so I don't 'think' its the clutch but this is my first vette so I'm hoping other will be able to give me some insight.

I'm going to get some GM syncromech from the dealer this weekend in a final attempt to fix this problem. I hope it works but I don't have my hopes up. Maybe someone can recommend a good vet trans place in or around the phila area that can look at her for me.

 

Maybe we can get a group rate
Why don't you post the vids here to show why the trans are needed

 

Almost anytime you find issues going into just about any gear and reverse its usually clutch related by not completely disconnecting the driveline.

Phil

 

It's a clutch problem. The clutch is dragging which makes it hard to get into gear.

 

how does the clutch drag? is it a hydraulic problem?

I remember reading some posts a while ago where an adjustable clutch master cylinder kept failing on someone, four time I believe, could that be the case here?

 

kind of sounds like a bent shift fork

 

Good way to tell if the clutch is dragging.. Leave the e-brake off, put it in gear with your foot on the clutch and rev it to ~5-6000rpm. If the car creeps forward, the clutch is dragging.

Normally an improperly machined flywheel could be the cause as well as hydraulic problems or a bent clutch fork(do C5s have a clutch fork? )

 

when I try to put it in gear the car will kinda jerk forward a little bit. I haven't tried reving it to 5-6k yet like you said though.

 

I RECKON CLUTCH AS WELL, RESIDUE ON THE PLATE,FLYWHEEL???????
LOVED THE VIDS. NITRO UK

 

Thanks

 

I think its clutch too. My stock clutch did that on a hard 1 hour session at the road course. I bled all the hydraulics and changed the fluid out and all was normal again.

 

As stated above, change and bleed the fluid for your clutch.

Max

 

I'll give it another try. this time I'm going to use my mity-vac at the clutch m/c.

 

Update:

I just heard from the service dept at the local dealer and it looks like their diagnosis is that the clutch is shot. I guess there is only so much diagnosis you can do without ripping apart the car, but I'm not 100% sure its the clutch. I really think its either the hydraulics or slave.

Here is the reason why; yesterday before my appointment I used my mity-vac to bleed the clutch from the m/c. First I disconnected the clutch M/C all together and tested to make sure it would hold vacuum and didn't have any leaks, all was well with that.

Then I bleed the system using the line that goes to the clutch slave with the mity-vac. I did this w/o the clutch m/c attached. I did this for well over an hour and there was a lot of nasty colored stuff coming out of there including lots of air. Then I reinstalled the clutch m/c res, filled it with fluid and bleed the system for another couple of hours but I was still getting air bubbles.

So I applied about 15" of vac and had a buddy slowly push the clutch pedal in, to get all the air & fluid out of the slave, then I slowly returned the pedal and it sucked fresh fluid back in. I did this process for quite a while but still couldn't get all the air out.

if it is the clutch that failed I'd like to know what part gave up the ghost. Was it the disk itself, the PP, one of the intermeidate plates??? There is no problem with slipping, it holds the power fine when I nail the gas in any gear. Once moving I can shift somewhat "ok" but its not butter smooth like it should be. I have a Mcloud (sp?) twin disk which is supposed to be top of the line and thats another reason why I don't think it failed on me.

 

Posting this as an update to anyone searching the forums with the same problem as me.

Turns out my issue getting into gear wasn't clutch related at all. It was due to an oversized (.022" larger then stock) pilot bearing journal in my Eagle Forged crank. A quick call to Eagle products and then sent me a couple of new bearings the correct size.

Reinstalled everything and the clutch now operates better then when I bought the car.
Hope this helps someone in the future.

 

GOOD TO HEAR YOU GOT IT SORTED.
BTW WHEN I SAID CLUTCH,I MEANT PILOT BEARING.
TOP MAN FOR UPDATE. NITRO UK

 

i got the solution......its under my work bench.....level 5 rpm 4l60e

ill need to sell it as my new LSX block will bust any 4l60e that its tied to...~

 

bahh, you'll never catch me with one of those, autos are for girly men

 

alright then!

buy one of these....u'll ned it!


http://www.americanautomotiveequipme...fts-p/tp7a.htm

 

damn thats a great deal!

Actually I was kind of hoping I could borrow yours