Slave cylinder
Thread Starter
Racer
Joined: Sep 2005
Posts: 385
Likes: 8
From: north branford ct
Slave cylinder
I was talking to ZF doc about my new slave on my 90 vette and why the shaft was so much shorter than my old one and he said there is a built in stop to help with installing it and while bleeding I would hear a loud bang when the shaft brakes the stop and becomes the full length. Well after an hour of pushing the clutch pedal I don’t get any bang and I’m not getting anymore air bubbles out of the master cylinder. Has anyone heard of this and how to get the slave to snap the stop?? Thanks for any help
Thread Starter
Racer
Joined: Sep 2005
Posts: 385
Likes: 8
From: north branford ct
No the clutch is not disengaging at all. The pedal is real easy going down till it gets about an inch from the bottom then gets super hard ? Brand new master and slave. Tried bleeding like a brake system but no better plus bleeder is like 45 degrees pointed down.
Burning Brakes
Joined: Mar 2019
Posts: 843
Likes: 149
From: Iowa
Good Luck
Thanks
Hawkeye56
Thread Starter
Racer
Joined: Sep 2005
Posts: 385
Likes: 8
From: north branford ct
(the first to fourth thing) but I’m trying to keep this one car in my life completely stock. Thanks , Walter
Burning Brakes
Joined: Mar 2019
Posts: 843
Likes: 149
From: Iowa
Thanks can I ask what year you have? And did O’riellys sell you the cast slave? I tried every different make of the cast slaves but all of them did not fit and the only way on a 1990 I’m told was to eliminate the CAGS SOLENOID
(the first to fourth thing) but I’m trying to keep this one car in my life completely stock. Thanks , Walter
(the first to fourth thing) but I’m trying to keep this one car in my life completely stock. Thanks , Walter
Yes the slave is cast, I really did not want to use a cast model. I did a lot of research and the only steel slave cylinder was from Zip and when I visiting with them they had a better than 50% failure with them, So I stayed away from them. I only went O Riley “s since Bill communicated a lot of success with this model.
I hope this answers your questions.
Thanks Hawkeye56
Thread Starter
Racer
Joined: Sep 2005
Posts: 385
Likes: 8
From: north branford ct
My car is a 1995 and the Cags was already disconnected when I purchased it.
Yes the slave is cast, I really did not want to use a cast model. I did a lot of research and the only steel slave cylinder was from Zip and when I visiting with them they had a better than 50% failure with them, So I stayed away from them. I only went O Riley “s since Bill communicated a lot of success with this model.
I hope this answers your questions.
Thanks Hawkeye56
Yes the slave is cast, I really did not want to use a cast model. I did a lot of research and the only steel slave cylinder was from Zip and when I visiting with them they had a better than 50% failure with them, So I stayed away from them. I only went O Riley “s since Bill communicated a lot of success with this model.
I hope this answers your questions.
Thanks Hawkeye56
thanks for the info 👍
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Thread Starter
Racer
Joined: Sep 2005
Posts: 385
Likes: 8
From: north branford ct
used a meat injector and in the vice had someone push the rod in and while I filled it he slowly let the rod out until it was full and I turned it up so the feed was the high point and let it sit with the port full but it never took any more
Melting Slicks
Joined: Jun 2011
Posts: 2,383
Likes: 385
From: Leland , North Carolina
I didn't mess with waiting for the plastic strap to break but you can do that if you want. If you have air in the line it may not happen or have dead or spongy clutch pedal.
Last edited by TommyFox; Mar 24, 2021 at 02:59 PM.
Thread Starter
Racer
Joined: Sep 2005
Posts: 385
Likes: 8
From: north branford ct
A transmission guy showed me to connect the line to the slave but unbolted from the trans. Remove the cap from reservoir and pump the rod by hand with someone watching at top for no more bubbles coming into reservoir. My line was long enough to slide it up top and do it myself.. Once that was done I unclipped the plastic strap but leaving the plastic cap on the end of stud and just pushed it on and bolted it up.Perfect stiff pedal.
I didn't mess with waiting for the plastic strap to break but you can do that if you want. If you have air in the line it may not happen or have dead or spongy clutch pedal.
I didn't mess with waiting for the plastic strap to break but you can do that if you want. If you have air in the line it may not happen or have dead or spongy clutch pedal.
Melting Slicks
Joined: Jun 2011
Posts: 2,383
Likes: 385
From: Leland , North Carolina
Leave the strap on while you are bleeding it. Once all the air bubbles cease in the reservoir unhook the plastic strap on both sides but leave it in place , you want the plastic cap on the end of the rod to remain.
Pro
Joined: Apr 2011
Posts: 628
Likes: 80
From: Canada
Reading this thread I have two questions please. I'm currently trying to find a clutch slave cylinder for my '89 with the original location for the bleeder valve. I don't want to modify anything -- just purchase an aftermarket cylinder shaped like the original and have my mechanic install it. I started a thread in the general discussion (link below), but it doesn't seem like there are many cylinders with the original location for the bleeder valve. My questions are for mudslide and Hawkeye56 (and anyone else please join in). Mudslide, was it the zip cylinder (link below) that you installed on your '90 vette that gave you the problem with the shaft being shorter than your old one ? I was thinking about getting the zip cylinder because it's apparently the same design as the original. And Hawkeye56, what is the part number or model of the cylinder you bought from ORiley's, and did you have to modify it to get it to work ? Thank you, guys.
1989 Clutch Slave Cylinder Recomendations
https://www.corvetteforum.com/forums...post1603228133
89-90 Clutch Slave Cylinder
https://www.zip-corvette.com/89-90-c...-cylinder.html
1989 Clutch Slave Cylinder Recomendations
https://www.corvetteforum.com/forums...post1603228133
89-90 Clutch Slave Cylinder
https://www.zip-corvette.com/89-90-c...-cylinder.html
Last edited by ~ Anno Domini; Mar 31, 2021 at 11:13 AM.
Burning Brakes
Joined: Mar 2019
Posts: 843
Likes: 149
From: Iowa
Reading this thread I have two questions please. I'm currently trying to find a clutch slave cylinder for my '89 with the original location for the bleeder valve. I don't want to modify anything -- just purchase an aftermarket cylinder shaped like the original and have my mechanic install it. I started a thread in the general discussion (link below), but it doesn't seem like there are many cylinders with the original location for the bleeder valve. My questions are for mudslide and Hawkeye56 (and anyone else please join in). Mudslide, was it the zip cylinder (link below) that you installed on your '90 vette that gave you the problem with the shaft being shorter than your old one ? I was thinking about getting the zip cylinder because it's apparently the same design as the original. And Hawkeye56, what is the part number or model of the cylinder you bought from ORiley's, and did you have to modify it to get it to work ? Thank you, guys.
1989 Clutch Slave Cylinder Recomendations
https://www.corvetteforum.com/forums...post1603228133
89-90 Clutch Slave Cylinder
https://www.zip-corvette.com/89-90-c...-cylinder.html
1989 Clutch Slave Cylinder Recomendations
https://www.corvetteforum.com/forums...post1603228133
89-90 Clutch Slave Cylinder
https://www.zip-corvette.com/89-90-c...-cylinder.html
do have a braided SS line from the master to the slave and I would suggest getting one so you do not have the unfriendly hard metal line to get lined up. You may want to consider a new master cylinder at the same time and the Power Torque # CM1232. I went Power Toque since Bill (ZF Doc.) said that the Power Torque has been very dependable, ( All Made in CHINA) So we can hope the quality is there.
Please keep us advised of what you end up doing,
Thanks
Hawkeye56
Pro
Joined: Apr 2011
Posts: 628
Likes: 80
From: Canada
Appreciate the info, Hawkeye56. I'm still uncertain what I will do. Part of the problem is that I'm not installing it myself, so it does not help that I don't have a visual in my mind of what has to be done under the car to get the cylinder to fit. Because of that, I'm leaning towards either zip's, or corvette central's 89-90 Clutch Slave Cylinder, only because they claim to be new and have the bleeder valve in the right position (and I don't want to ask the mechanic to change things to try to make it all fit). That said, I think you mentioned zip's had a 50% failure rate and I suspect zip and CC is selling the same cylinder (links below), which is not comforting if true. So that causes me to pause, which is why I'm still uncertain. More later as I can.
https://www.corvettecentral.com/c4-8...ylinder-534262
https://www.zip-corvette.com/89-90-c...-cylinder.html
https://www.corvettecentral.com/c4-8...ylinder-534262
https://www.zip-corvette.com/89-90-c...-cylinder.html
Last edited by ~ Anno Domini; Apr 1, 2021 at 10:04 AM.
Burning Brakes
Joined: Mar 2019
Posts: 843
Likes: 149
From: Iowa
Appreciate the info, Hawkeye56. I'm still uncertain what I will do. Part of the problem is that I'm not installing it myself, so it does not help that I don't have a visual in my mind of what has to be done under the car to get the cylinder to fit. Because of that, I'm leaning towards either zip's, or corvette central's 89-90 Clutch Slave Cylinder, only because they claim to be new and have the bleeder valve in the right position (and I don't want to ask the mechanic to change things to try to make it all fit). That said, I think you mentioned zip's had a 50% failure rate and I suspect zip and CC is selling the same cylinder (links below), which is not comforting if true. So that causes me to pause, which is why I'm still uncertain. More later as I can.
https://www.corvettecentral.com/c4-8...ylinder-534262
https://www.zip-corvette.com/89-90-c...-cylinder.html
https://www.corvettecentral.com/c4-8...ylinder-534262
https://www.zip-corvette.com/89-90-c...-cylinder.html
Good Luck
Thank You
Hawkeye56
Pro
Joined: Apr 2011
Posts: 628
Likes: 80
From: Canada
I appreciate your words, Hawkeye56. I'm having a power steering pump installed in the car at the GM dealership next Monday. I will ask them to take a photo of the clutch slave cylinder to see how it is positioned. More later as I can. Thank you.
Thread Starter
Racer
Joined: Sep 2005
Posts: 385
Likes: 8
From: north branford ct
Reading this thread I have two questions please. I'm currently trying to find a clutch slave cylinder for my '89 with the original location for the bleeder valve. I don't want to modify anything -- just purchase an aftermarket cylinder shaped like the original and have my mechanic install it. I started a thread in the general discussion (link below), but it doesn't seem like there are many cylinders with the original location for the bleeder valve. My questions are for mudslide and Hawkeye56 (and anyone else please join in). Mudslide, was it the zip cylinder (link below) that you installed on your '90 vette that gave you the problem with the shaft being shorter than your old one ? I was thinking about getting the zip cylinder because it's apparently the same design as the original. And Hawkeye56, what is the part yes number or model of the cylinder you bought from ORiley's, and did you have to modify it to get it to work ? Thank you, guys.
1989 Clutch Slave Cylinder Recomendations
https://www.corvetteforum.com/forums...post1603228133
89-90 Clutch Slave Cylinder
https://www.zip-corvette.com/89-90-c...-cylinder.html
1989 Clutch Slave Cylinder Recomendations
https://www.corvetteforum.com/forums...post1603228133
89-90 Clutch Slave Cylinder
https://www.zip-corvette.com/89-90-c...-cylinder.html
Thread Starter
Racer
Joined: Sep 2005
Posts: 385
Likes: 8
From: north branford ct
My car is a 1995 and the Cags was already disconnected when I purchased it.
Yes the slave is cast, I really did not want to use a cast model. I did a lot of research and the only steel slave cylinder was from Zip and when I visiting with them they had a better than 50% failure with them, So I stayed away from them. I only went O Riley “s since Bill communicated a lot of success with this model.
I hope this answers your questions.
Thanks Hawkeye56
Yes the slave is cast, I really did not want to use a cast model. I did a lot of research and the only steel slave cylinder was from Zip and when I visiting with them they had a better than 50% failure with them, So I stayed away from them. I only went O Riley “s since Bill communicated a lot of success with this model.
I hope this answers your questions.
Thanks Hawkeye56
Pro
Joined: Apr 2011
Posts: 628
Likes: 80
From: Canada
Thanks for the info, mudslide. Did you use the Power Torque Slave Cylinder part # CS2296, and did you have to remove the CAGS to install it ? Sorry to hear about your throwout bearing. I hope someone can answer your question about what is the best throw out bearing for your 90 vette in post #19.