Problems shifting my 04 Z
Thread Starter
Pro
Joined: Oct 2009
Posts: 712
Likes: 0
From: Panama City Beach Florida
Problems shifting my 04 Z
Okay so im having problems with my car refusing shifts or grinding when I try to shift at very high rpms... I have a new level V RPM transmission, and a new centerforce dual friction clutch. I also have a short shifter that I bought on ebay (hell for 40 bucks i had to try it)....
I initially thought it was my clutch fluid being nasty and causing the issues, and while it helped by flushing it, it did not totally solve the problem. I also have a NEW slave cylinder made by GM.
Anybody have any experience with the knock off ebay shifter? It is very very short throw, and quite hard to shift, but I liked how short it was.. I just fear now it is responsible for my issues.
I initially thought it was my clutch fluid being nasty and causing the issues, and while it helped by flushing it, it did not totally solve the problem. I also have a NEW slave cylinder made by GM.
Anybody have any experience with the knock off ebay shifter? It is very very short throw, and quite hard to shift, but I liked how short it was.. I just fear now it is responsible for my issues.
Tech Contributor
Joined: Jan 2007
Posts: 19,450
Likes: 1,155
From: Dyer, IN
Okay so im having problems with my car refusing shifts or grinding when I try to shift at very high rpms... I have a new level V RPM transmission, and a new centerforce dual friction clutch. I also have a short shifter that I bought on ebay (hell for 40 bucks i had to try it)....
I initially thought it was my clutch fluid being nasty and causing the issues, and while it helped by flushing it, it did not totally solve the problem. I also have a NEW slave cylinder made by GM.
Anybody have any experience with the knock off ebay shifter? It is very very short throw, and quite hard to shift, but I liked how short it was.. I just fear now it is responsible for my issues.
I initially thought it was my clutch fluid being nasty and causing the issues, and while it helped by flushing it, it did not totally solve the problem. I also have a NEW slave cylinder made by GM.
Anybody have any experience with the knock off ebay shifter? It is very very short throw, and quite hard to shift, but I liked how short it was.. I just fear now it is responsible for my issues.
Melting Slicks
Joined: Nov 2004
Posts: 3,495
Likes: 0
From: Paducah Ky
I've done alot of reading lately on clutches and have read many times about trouble shifting at high rpms after installing a new aftermarket clutch. Do some reading on a Tick adjustable master cylinder. After installation they had no more problems with high rpm shifting.
Thread Starter
Pro
Joined: Oct 2009
Posts: 712
Likes: 0
From: Panama City Beach Florida
Yea, that is one thing I did NOT replace yet. How difficult is that to do? I may change to a nicer shifter first to see if that clears it up, otherwise that will have to be the next thing I do. Seems to me those are the only two possibilities at this point. The clutch/tranny/slave are all new.
Pro
Joined: Jan 2006
Posts: 538
Likes: 0
From: Long Island N.Y.
I'm gong to bet it's not your shifter. Tell us, does your car shift fine at low rpms? Is it only when you are higher in the rpms that shifting is difficult or impossible until your rpms drop? And you say you have a Centerforce clutch???....
Read my post...
http://forums.corvetteforum.com/c5-t...ly-worked.html
Good luck,
TomK
Read my post...
http://forums.corvetteforum.com/c5-t...ly-worked.html
Good luck,
TomK
Thread Starter
Pro
Joined: Oct 2009
Posts: 712
Likes: 0
From: Panama City Beach Florida
yea, it shifts decent at lower rpms, the problem is when im pushing redline. I was racing a 355 challenge car and the only reason he hung with me was because of this damn shifting issue haha
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Racer
Joined: Nov 2009
Posts: 438
Likes: 0
From: Cypress Texas
over time the internal seals just wear out, happened to me a few years ago...Got to the point were I was constantly picking the clutch pedal off the floor with the top of my foot. I put another stocker back in, its been fine for 2+ years..
Melting Slicks
Joined: Nov 2004
Posts: 3,495
Likes: 0
From: Paducah Ky
It's what I was saying about the people with the more heavy duty clutches that can't shift at high rpms. This is because the stock master just can't cut the mustard anymore, not at high rpm anyway. The hydraulic system is overloaded. I read this many times in the last several days doing searchs on a new clutch and everyone that put the Tick on said the shifts at 6000 were smooth as butter afterwards.
Pro
Joined: Jan 2006
Posts: 538
Likes: 0
From: Long Island N.Y.
Have you done the "test"? Where you have your car on level ground...put the car in 1st gear, push clutch all the way in and rev it to 6000rpm? Does the car move? Then it's your clutch not disengaging 100%. My car did that in 1st and in reverse...until I installed the Tick.
The Tick pushes more fluid which allows the clutch to be disengaged 100%, even at high rpms - KEEP IN MIND THE WEIGHTS ON THE CENTERFORCE CLUTCH FIGHT DISENGAGEMENT AT HIGH RPMS. At low rpms, the weights don't do much but as rpms increase, the weights fight the disengagement and can bend the clutch back into engagement.
See how your car shifts nice in the garage or at low rpms? If it was the shifter, it'd be a PITA all the time. With high rpms, it's the clutch...and the Tick should fix it...it fixed mine, thankfully!!!
Again, good luck,
TomK
Last edited by ace996; Feb 25, 2010 at 12:12 AM.
Thread Starter
Pro
Joined: Oct 2009
Posts: 712
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From: Panama City Beach Florida
hmm, seems like I may be ordering the tick... In the drive way when im at a standstill with the motor running if I go to put it in first with the clutch all the way to the floor I cant say that the cars begins moving forward but it does sort of slightly bump forward a centimeter or soo and then stops. Cars are a PITA haha
Drifting
Joined: Jan 2004
Posts: 1,419
Likes: 6
From: Alamosa CO
hmm, seems like I may be ordering the tick... In the drive way when im at a standstill with the motor running if I go to put it in first with the clutch all the way to the floor I cant say that the cars begins moving forward but it does sort of slightly bump forward a centimeter or soo and then stops. Cars are a PITA haha
I know it's kinda pricey, but it does exactly what it's supposed to, and to me that's worth plenty!
Jimbo
Burning Brakes
Joined: Jan 2008
Posts: 986
Likes: 4
From: Galaxy Traveler
My stock setup had the same or similar symptom and it was a bad pilot bearing. I'm assuming you have a new one of those though. I went back all stock except I used a pilot bushing instead of a bearing. Tranny shifts near perfect now.
What about that Ram adjustable master? I've heard it is a direct replacement where as the Tick is a modification process.
What about that Ram adjustable master? I've heard it is a direct replacement where as the Tick is a modification process.
Pro
Joined: Jan 2006
Posts: 538
Likes: 0
From: Long Island N.Y.
hmm, seems like I may be ordering the tick... In the drive way when im at a standstill with the motor running if I go to put it in first with the clutch all the way to the floor I cant say that the cars begins moving forward but it does sort of slightly bump forward a centimeter or soo and then stops. Cars are a PITA haha
(((
Pro
Joined: Jan 2006
Posts: 538
Likes: 0
From: Long Island N.Y.
The Tick master, and about 2-3hrs labor, and you'll be shifting like you want.
Agin, don't worry...it's fixable.
Be good,
TomK