Notices
Engine & Drivetrain VQ Power and Delivery

Do concentric slave cylinders have a spring inside?

Thread Tools
 
Search this Thread
 
Old Aug 1, 2011 | 10:02 PM
  #1  
winchman's Avatar
winchman
Thread Starter
Registered User
 
Joined: Sep 2009
Posts: 2,335
Likes: 5
From: Georgia
Default Do concentric slave cylinders have a spring inside?

I know lots of people have taken them out, but has anyone taken one apart? I've recently saw one off another vehicle, and it has a rather hefty spring that pushes the throwout bearing against the clutch diaphragm spring. All the photos I could find show a rubber boot on the 350Z CSC.

So, is there a spring inside the 350Z CSC similar to the one shown in the attached photo?
Attached Thumbnails Do concentric slave cylinders have a spring inside?-miscellaneous-cannon-111.jpg  
Reply
Old Aug 2, 2011 | 10:55 PM
  #2  
winchman's Avatar
winchman
Thread Starter
Registered User
 
Joined: Sep 2009
Posts: 2,335
Likes: 5
From: Georgia
Default

Wow, 290 views and no one has seen the inside of a CSC?
Reply
Old Aug 3, 2011 | 03:31 PM
  #3  
ZSpeedPerformance's Avatar
ZSpeedPerformance
Vendor - Former Vendor
iTrader: (71)
 
Joined: Oct 2009
Posts: 2,001
Likes: 22
From: Vandalia, Ohio
Default

Most of them have springs, Certain aftermarket internal slaves like Tilton, AP racing ect do not as they are shimmed during installation to have the correct clearance. These are mostly used on race on cars as they have to be adjusted with shims as the clutch wears.
Reply
Old Aug 3, 2011 | 08:53 PM
  #4  
winchman's Avatar
winchman
Thread Starter
Registered User
 
Joined: Sep 2009
Posts: 2,335
Likes: 5
From: Georgia
Default

Thanks for the info.

So, seeing as how the spring is compressed when the clutch is engaged (pedal up), the throwout bearing must be pushing against the diaphragm spring in the pressure plate all the time. I wonder how they get the "free play" at the top of the pedal travel when there's no free play where it really counts.

Only a bean counter or a weight reduction specialist or someone on Nissan's drive train B-team, would think the CSC is a good idea.
Reply
Old Aug 4, 2011 | 03:24 AM
  #5  
ZSpeedPerformance's Avatar
ZSpeedPerformance
Vendor - Former Vendor
iTrader: (71)
 
Joined: Oct 2009
Posts: 2,001
Likes: 22
From: Vandalia, Ohio
Default

Free play is only there for the master cyl, Once the cars warm up everything expands, This includes the rod in the master cyl. If you do not retain a bit of free play in the master cylinder adjustment you will begin to block the orifice inside the master that allows the fluid to return into the reservoir when you let the pedal up.

If mis adjusted this can cause pressure to build in the system and it can start pushing on the clutch itself and cause the clutch to slip.

In any car the TOB constantly rides on the pressure plate fingers.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
07ZEKE
Brakes & Suspension
2
Aug 23, 2021 09:15 PM
Lt_Ballzacki
Brakes & Suspension
39
Aug 6, 2021 06:19 AM
MM'08_350Z
VQ35HR
225
Apr 22, 2021 09:42 PM
sherm
Engine & Drivetrain
15
Apr 11, 2020 05:21 PM
3vilbunny
Exterior & Interior
24
Jul 18, 2017 05:10 PM




All times are GMT -8. The time now is 06:43 PM.