ZR-1 Net Registry Forums  

Go Back   ZR-1 Net Registry Forums > C4 ZR-1 > C4 ZR-1 General Postings

Reply
 
Thread Tools Display Modes
Old 07-22-2009   #1
LGAFF
 
LGAFF's Avatar
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
Default Clutch Slave/Master Cylinder

Well been through hell and back with the Cylinder slave and clutch master cylinder. For the newby this is not an easy job.....The clutch master cylinder must be released from the clutch pedal, so the drivers side kick panel must be removed, and then a deep dive inside to find it.

The Clutch slave hose is a PITA to remove as it is bolted to the firewall with a 7MM screw. Biggest pain in the AZZ was the slave cylinder.....the aftermarket one I used is cast so it is much larger than the OEM. I had to fight it to get it in the right position, it is blocked by part of the trans, and CATs make putting the nuts on the screws a pain....especially on your back. I had to grind down part of the body so I could get a socket on the nut.

Needless to say, the first time I positioned the slave cylinder, the rod slipped off the seat and bent...so I had to transfer the OE.

The aftermarket one from Rock Auto appears to be crap....so I anticipate it will not last long. If you can find a smaller one similiar to OE it would be much better to work with....
__________________
LGAFF
90 #966-150K miles-sold
92 #234-sold
1987 Callaway TT #17
1991 ZR-1 #1359

Last edited by LGAFF; 07-22-2009 at 12:26 AM.
LGAFF is offline   Reply With Quote
Old 07-22-2009   #2
Sgreg
 
Sgreg's Avatar
 
Join Date: Aug 2006
Location: Texas
Posts: 518
Default Re: Clutch Slave/Master Cylinder

The aftermarket one from Rock Auto appears to be crap....so I anticipate it will not last long. If you can find a smaller one similiar to OE it would be much better to work with....[/quote]

If anyone needs one of the AC Delco original slaves, I have one to sell. They are not a bargain but I will sell mine for what I paid, $149. Lee is right about the tight spaces.
__________________
1991 ZR-1, Black, Black, # 541
Sgreg is offline   Reply With Quote
Old 07-22-2009   #3
Jeffvette
Guest
 
Posts: n/a
Default Re: Clutch Slave/Master Cylinder

And people have been praising the aftermarket versions. Helps to use a set of longer studs where it mounts, and then I have never installed one with Factory cats, but it is a tight fit in general.
  Reply With Quote
Old 07-22-2009   #4
LGAFF
 
LGAFF's Avatar
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
Default Re: Clutch Slave/Master Cylinder

Longer studs might be a plus, but then again it might make it impossible to fit in........I just took the one off my 92 with headers it was easy....

Should the Clutch slave be a bitch to hold down to bolt it on?
__________________
LGAFF
90 #966-150K miles-sold
92 #234-sold
1987 Callaway TT #17
1991 ZR-1 #1359
LGAFF is offline   Reply With Quote
Old 07-22-2009   #5
Kb7tif
 
Join Date: May 2009
Location: S Nevada
Posts: 352
Default Re: Clutch Slave/Master Cylinder

Its normal for some pressure. Have you added fluid yet. These should bleed out quite easily. You Shoulnt Have to pump the $%^* out of these Either. Pm me. Partsladi has gm masters for pry less then rock auto.
__________________
1995 Convertible Supercharged Auto
1974 454 550hp (avatar car) On the blocks- -Scharger install !
1992-Zr-1 Sold.
Watson Headers
Ported Plenum, Housings
Random tech cats
Fidanza Flywheel
Chipped, Relocated Mat
Woods 165 stat
Borlas, Straights
1996 Lt4 Sold
1994 Lt1 Sold
2004 Z06 Sold
AKA** Illenema
Kb7tif is offline   Reply With Quote
Old 07-22-2009   #6
LGAFF
 
LGAFF's Avatar
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
Default Re: Clutch Slave/Master Cylinder

Its on the car, and fluid in....just surprised the pressure needed to put it on dry.....although the angle is a tough one.
__________________
LGAFF
90 #966-150K miles-sold
92 #234-sold
1987 Callaway TT #17
1991 ZR-1 #1359
LGAFF is offline   Reply With Quote
Old 07-22-2009   #7
rhipsher
 
rhipsher's Avatar
 
Join Date: Aug 2008
Location: Houston 90 Red ZR-1
Posts: 2,320
Default Re: Clutch Slave/Master Cylinder

Theres a cylinder that sticks out of the transmission that blocks the slave from coming straight out so I've found it easier to unscrew the two studs from the bell housing which is probably why they made them removable then it comes out easy. But you will need an extension and a swivel. Also Lee reverse bleeding is much better than having to pump pump and pump till the preasure builds back up. Just take an automotive cerenge with a hose that will fit snug on the bleed screw. Fill the cerenge up with clutch fluid. Open the bleed screw and pump the fluid in. Have a buddy watch as the master cylinder resevour as it starts to fill . And when there are no more air bubbles coming up though the master then fill it up the rest of the way and your done. It takes maybe 5 minutes and your done.

Last edited by rhipsher; 07-22-2009 at 09:08 AM.
rhipsher is offline   Reply With Quote
Old 07-22-2009   #8
Pete
 
Pete's Avatar
 
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,679
Default Re: Clutch Slave/Master Cylinder

Lee,you should've called me,what i did was remove the new seals from the Rock Auto slave and installed them in the OE slave no more leaks and works great.

Also FWIW the Rock Auto cast slave has a steel piston in it the OE is aluminum i would think the steel piece would get hotter.

Pete
__________________
'91 #1635 PoloGreen 350 LT5
11.09 @ 129.27
11.04 @ 128.86
474RWHP 400RWTQ
http://www.youtube.com/watch?v=SFNFOhGGlR4
http://www.youtube.com/watch?v=ZlRIOMwaDYY
https://sites.google.com/site/peteszr1garage

Last edited by Pete; 07-22-2009 at 12:35 PM.
Pete is offline   Reply With Quote
Old 07-22-2009   #9
Kb7tif
 
Join Date: May 2009
Location: S Nevada
Posts: 352
Default Re: Clutch Slave/Master Cylinder

Figures I open my mouth about clutch master slave, and i will be dammed i had a spongy peddle for the first half of my cruise today. Air came out after a while, checked the master, out. that will do it.
I have pulled the trans twice, pulled the plenum,seats ect. Never thought to check the master.
__________________
1995 Convertible Supercharged Auto
1974 454 550hp (avatar car) On the blocks- -Scharger install !
1992-Zr-1 Sold.
Watson Headers
Ported Plenum, Housings
Random tech cats
Fidanza Flywheel
Chipped, Relocated Mat
Woods 165 stat
Borlas, Straights
1996 Lt4 Sold
1994 Lt1 Sold
2004 Z06 Sold
AKA** Illenema

Last edited by Kb7tif; 07-22-2009 at 08:10 PM.
Kb7tif is offline   Reply With Quote
Old 07-28-2009   #10
bldavis11
 
Join Date: Mar 2006
Location: Portsmouth, VA
Posts: 245
Default Re: Clutch Slave/Master Cylinder

Lee,

Which master and clutch from Rock Auto did you go with? They list multiple manufacturers, including AC Delco. I'm about to drop the money on this as well.

Ben
bldavis11 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:28 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright ZR-1 Net Registry 2020