Sticky: (Official) 370Z Clutch Pressure (CSC) Failures

JARblue · 06-23-2016, 09:24 AM

The clutch hydraulic system in the Z just plain sucks. I've had Z1's kit for 2 years now. And still having master problems. I'm in the process of installing the new RJM HD master. I am fully expecting that to solve my problems once and for all.

If you like tinkering with your car and don't mind a little adjusting or part replacing if tracking hard, the Z1 kit is great because you can essentially replace anything in the clutch system without ever having to drop the transmission again (once installed). But if you want maintenance free, 'I don't want to mess with the slave at all', then the ZSpeed HD slave is probably your best option.

Chuck33079 · 06-23-2016, 09:28 AM

Quote:

Originally Posted by BlackZeda

So I have been throwing a lot of money into trying to mitigate the issues I have when it gets hot outside having done the following:

- Added a 19 row oil cooler
- Replaced the OE radiator with a CSF
- UpRev tuned

With these mods the engine temp issues seemed to be solved, but yesterday when it got into the 90s I started to experience a really mushy, unresponsive clutch where when I try to accelerate from a stop, it feels like the transmission is bogged down and the car just does not want to go.

I am wondering that even though I am not experiencing the "clutch pedal drops to the floor and doesn't return" symptom, that what I am experiencing may be the CSC getting too hot.

Would it be worth trying the Z1 CSC Elimination kit if you were in my shoes? I must solve this otherwise it may be time for the Z to go

Everything JAR said above, and you may also want to insulate the clutch line. You may just be boiling your fluid. Bleeding the system and insulating the line is a cheap easy first step before you drop the tranny.

khsysh · 06-27-2016, 03:58 PM

Hello guys, I think mine will fail in near future too. 2012 / 54k miles on it.
During a mountain run a month ago, I pressed my clutch and it went in all the way. However, it did not come back up all the way. But I was able to put it into gears, and the clutch got normal after one hour of driving coming back home. So I bleed the clutch fluid about two weeks ago. Yesterday I started the car and tried to put it into gear. However the clutch went down halfway when no pressure was applied (only the weight of my foot was applied) but pressure was needed to be applied in order to press it down all the way from the half point like always. It eventually became normal after 15 minutes of driving.

From what I read on this thread, I think I need to do something about it before it dies. I asked my mechanic about it and he said it will cost over $2000 including parts and labor to fix the problem. Is it correct? However, I was debating to keep the Z or let it go for another car. So if I choose to keep the Z, what will be the best way to go? Change it to Z1's kit and will it solve the problem? Or buy ZSpeed HD slave like what JARblue said? I don't track the Z and it's my daily driver. I just don't want to worry about it after if I decide to keep the Z.

Thank you and sorry for poor English.

JARblue · 06-27-2016, 04:41 PM

ZSpeed HD CSC or Z1's CSC kit will both solve your CSC issue. The ZSpeed one requires slightly less maintenance. It's probably the one you want.

$2000 seems a bit high, but not completely outrageous. Typically its 7-8 hours of labor for the transmission drop. So figure $80-120 per hour for labor - depending on your region. Then add cost of parts should give you a good ballpark on what to expect pricewise. Typically I see $1200-1500 for CSC replacement, including aftermarket CSC cost. Check out Z1 for pricing if you're near enough to them in Georgia.

BlackZeda · 06-27-2016, 07:09 PM

Quote:

Originally Posted by JARblue

What clutch fluid are you using and how fresh is it? See Post #1528 (three posts above yours)

I still take it to Nissan for service, but I can bring in my own. Thanks!

eastwest2300 · 06-28-2016, 10:26 PM

I havent been up in this thread in months.. sorry for the misfortune fellas. Get that Zspeed kit or the Z1 setup...

Ritch7714 · 07-18-2016, 02:13 PM

Correct me if I'm wrong but unlike other makes and models the csc IS an internal lubricated part in our cars correct?

Sent from my iPhone using Tapatalk

Jagerk · 07-20-2016, 09:52 PM

Just wondering what you guys think of the new Zspeed CMAK/CSC delete they just released?
I know it is new and nobody probably has it yet, but just wanted to see what people thought compared to the Z1 from the pictures.

Link

madeinjapan · 07-21-2016, 09:34 AM

https://www.z1motorsports.com/z1-pro...it-p-7340.html

vs

ZSpeed Performance Nissan 300ZX 350Z 370Z Infiniti G35 G37 Q50 Q60

??????

KoolKarmaJoe · 07-21-2016, 11:07 AM

Quote:

Originally Posted by Jagerk

Just wondering what you guys think of the new Zspeed CMAK/CSC delete they just released?
I know it is new and nobody probably has it yet, but just wanted to see what people thought compared to the Z1 from the pictures.

Link

Thanks for posting. I will check it out.

Sent from my XT1254 using Tapatalk

JARblue · 07-21-2016, 11:12 AM

I'm not sure you can go wrong with either one. Both are great vendors. And having the slave cylinder outside the transmission is ideal if you ever need to work on it in the future.

KoolKarmaJoe · 07-21-2016, 11:50 AM

Quote:

Originally Posted by JARblue

I'm not sure you can go wrong with either one. Both are great vendors. And having the slave cylinder outside the transmission is ideal if you ever need to work on it in the future.

Ok I'm sure I will get negative feedback, but it seems that when I have the VDC in "off mode", my clutch pedal doesn't seem to be as spongy at higher temperatures as opposed to when I have VDC "on".
I can't figure out how this would effect clutch pedal, but clutch pedal has recovered faster & feels less spongy when VDC is in off mode. I don't recommend turning VDC off when driving on wet road conditions.

Sent from my XT1254 using Tapatalk

BlackZeda · 07-21-2016, 11:56 AM

So the Z1 CSC Elimination Kit, RJM HD Master cylinder, Whiteline diff bushings and Wavetrac LSD have been installed and have definitely rectified any inconsistencies/sponginess in the clutch. My Z is running tight!

eastwest2300 · 07-21-2016, 07:21 PM

Quote:

Originally Posted by BlackZeda

So the Z1 CSC Elimination Kit, RJM HD Master cylinder, Whiteline diff bushings and Wavetrac LSD have been installed and have definitely rectified any inconsistencies/sponginess in the clutch. My Z is running tight!

awesome man!

BlackZeda · 07-21-2016, 08:20 PM

Oh, and thanks for all the great information and suggestions fellas

06-23-2016, 09:24 AM	#1531 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	The clutch hydraulic system in the Z just plain sucks. I've had Z1's kit for 2 years now. And still having master problems. I'm in the process of installing the new RJM HD master. I am fully expecting that to solve my problems once and for all. If you like tinkering with your car and don't mind a little adjusting or part replacing if tracking hard, the Z1 kit is great because you can essentially replace anything in the clutch system without ever having to drop the transmission again (once installed). But if you want maintenance free, 'I don't want to mess with the slave at all', then the ZSpeed HD slave is probably your best option. Chuck33079 likes this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

06-27-2016, 04:41 PM	#1534 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	ZSpeed HD CSC or Z1's CSC kit will both solve your CSC issue. The ZSpeed one requires slightly less maintenance. It's probably the one you want. $2000 seems a bit high, but not completely outrageous. Typically its 7-8 hours of labor for the transmission drop. So figure $80-120 per hour for labor - depending on your region. Then add cost of parts should give you a good ballpark on what to expect pricewise. Typically I see $1200-1500 for CSC replacement, including aftermarket CSC cost. Check out Z1 for pricing if you're near enough to them in Georgia. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \| Last edited by JARblue; 06-27-2016 at 04:44 PM.

06-28-2016, 10:26 PM	#1536 (permalink)
eastwest2300 A True Z Fanatic Join Date: May 2010 Location: South FL Posts: 90,967 Drives: '16QX70/'21 Supra3.0 Rep Power: 2684550	I havent been up in this thread in months.. sorry for the misfortune fellas. Get that Zspeed kit or the Z1 setup... __________________ Infiniti QX70 & Toyota Supra 3.0 Premium

07-20-2016, 09:52 PM	#1538 (permalink)
Jagerk Base Member Join Date: May 2015 Location: VA Posts: 1 Drives: 10 G37 Rep Power: 10	Just wondering what you guys think of the new Zspeed CMAK/CSC delete they just released? I know it is new and nobody probably has it yet, but just wanted to see what people thought compared to the Z1 from the pictures. Link eastwest2300 likes this.

07-21-2016, 11:12 AM	#1541 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	I'm not sure you can go wrong with either one. Both are great vendors. And having the slave cylinder outside the transmission is ideal if you ever need to work on it in the future. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

06-27-2016, 03:58 PM	#1533 (permalink)
khsysh Base Member Join Date: Feb 2009 Location: GA Posts: 104 Drives: 12 PW Z mt Rep Power: 16	Hello guys, I think mine will fail in near future too. 2012 / 54k miles on it. During a mountain run a month ago, I pressed my clutch and it went in all the way. However, it did not come back up all the way. But I was able to put it into gears, and the clutch got normal after one hour of driving coming back home. So I bleed the clutch fluid about two weeks ago. Yesterday I started the car and tried to put it into gear. However the clutch went down halfway when no pressure was applied (only the weight of my foot was applied) but pressure was needed to be applied in order to press it down all the way from the half point like always. It eventually became normal after 15 minutes of driving. From what I read on this thread, I think I need to do something about it before it dies. I asked my mechanic about it and he said it will cost over $2000 including parts and labor to fix the problem. Is it correct? However, I was debating to keep the Z or let it go for another car. So if I choose to keep the Z, what will be the best way to go? Change it to Z1's kit and will it solve the problem? Or buy ZSpeed HD slave like what JARblue said? I don't track the Z and it's my daily driver. I just don't want to worry about it after if I decide to keep the Z. Thank you and sorry for poor English.

07-18-2016, 02:13 PM	#1537 (permalink)
Ritch7714 Base Member Join Date: May 2016 Location: Connecticut Posts: 61 Drives: 2009 370z Nismo Rep Power: 9	Correct me if I'm wrong but unlike other makes and models the csc IS an internal lubricated part in our cars correct? Sent from my iPhone using Tapatalk

07-21-2016, 09:34 AM	#1539 (permalink)
madeinjapan Banned Join Date: Jan 2016 Location: pistolvania Posts: 1,387 Drives: 2013 g37x 2014 370z Rep Power: 0	https://www.z1motorsports.com/z1-pro...it-p-7340.html vs ZSpeed Performance Nissan 300ZX 350Z 370Z Infiniti G35 G37 Q50 Q60 ??????

07-21-2016, 11:56 AM	#1543 (permalink)
BlackZeda A True Z Fanatic Join Date: May 2011 Location: Englewood, CO Posts: 1,109 Drives: 19 Audi TT RS Rep Power: 22	So the Z1 CSC Elimination Kit, RJM HD Master cylinder, Whiteline diff bushings and Wavetrac LSD have been installed and have definitely rectified any inconsistencies/sponginess in the clutch. My Z is running tight! KoolKarmaJoe likes this.

07-21-2016, 08:20 PM	#1545 (permalink)
BlackZeda A True Z Fanatic Join Date: May 2011 Location: Englewood, CO Posts: 1,109 Drives: 19 Audi TT RS Rep Power: 22	Oh, and thanks for all the great information and suggestions fellas

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