This does NOT seem right.. Please look..

pty370z · 10-30-2012, 02:54 PM

Hi guys,

I recently had the CSC fail in my Z so I went ahead and decided to swap everything in the clutch system..

I installed:
- Z1 Motorsports Performance Clutch Kit
- Z1 Motorsports Lightweight Flywheel
- ZSpeed HD CSC with its own SS lines and stuff
- New OEM Master Cylinder (it was damaged as well)
- Motul RBF-600 clutch fluid.

I went through the clutch break-in period (I was told 800 miles, actually did around 650 miles before stepping hard on the Z again).

So, everything has been running great for the past 2k-2.5k miles until a couple of days ago I experienced (again) a loss in clutch pedal pressure.. It wasn't a full loss of pressure, probably about 50% no pressure, and then you could feel the pedal to be able to shift gears..

It happened during traffic, no hard driving at all when this happened.. After a short while, pedal feel came back to normal.. I THEN pushed the car hard for a while and everything felt normal..

I stopped to check the fluid level and I took a picture of the clutch fluid reservoir with the fluid because I think it's NOT supposed to look like this.. Fluid should be "cleaner" I believe..??

Should I flush the clutch fluid completely and refill with fresh RBF-600 again..??

I appreciate your comments on this.. Thanks!

B&W_Evader · 10-30-2012, 03:07 PM

Maybe a bubble... Check for leaks and flush. Hopefully the problem will stay gone.

GaleForce · 10-30-2012, 03:27 PM

Looks like coffee

jcosta79 · 10-30-2012, 03:36 PM

Quote:

Originally Posted by pty370z

Should I flush the clutch fluid completely and refill with fresh RBF-600 again..??

Yes.

I had to do this regularly (about every 6K miles) on my old 2005 350Z and also on my C6. (It's a NOTORIOUS problem on the Vettes)

On the 350Z it was easy to flush out the fluid because it had a bleeder valve. I just had the guys who would do my oil change do it for me. It's not a big deal.

jcosta79 · 10-30-2012, 03:38 PM

I would check on it at least every 2-3K miles and flush out the fluid before it gets that bad again.

pty370z · 10-30-2012, 05:48 PM

I found this video (it's a Corvette)..

Can this process be replicated for a 370Z..??

Process starts @ 3:50

cossie1600 · 10-30-2012, 06:47 PM

Yes, it takes me less time to do it than to watch the entire video.

11Thumper · 11-01-2012, 02:06 AM

I flush the clutch fluid on my S2000 every other oil change.

10-30-2012, 02:54 PM	#1 (permalink)
pty370z Track Member Join Date: Apr 2009 Location: Panama City, Panama Posts: 654 Drives: over the speed limit Rep Power: 17	This does NOT seem right.. Please look.. Hi guys, I recently had the CSC fail in my Z so I went ahead and decided to swap everything in the clutch system.. I installed: - Z1 Motorsports Performance Clutch Kit - Z1 Motorsports Lightweight Flywheel - ZSpeed HD CSC with its own SS lines and stuff - New OEM Master Cylinder (it was damaged as well) - Motul RBF-600 clutch fluid. I went through the clutch break-in period (I was told 800 miles, actually did around 650 miles before stepping hard on the Z again). So, everything has been running great for the past 2k-2.5k miles until a couple of days ago I experienced (again) a loss in clutch pedal pressure.. It wasn't a full loss of pressure, probably about 50% no pressure, and then you could feel the pedal to be able to shift gears.. It happened during traffic, no hard driving at all when this happened.. After a short while, pedal feel came back to normal.. I THEN pushed the car hard for a while and everything felt normal.. I stopped to check the fluid level and I took a picture of the clutch fluid reservoir with the fluid because I think it's NOT supposed to look like this.. Fluid should be "cleaner" I believe..?? Should I flush the clutch fluid completely and refill with fresh RBF-600 again..?? I appreciate your comments on this.. Thanks! __________________ 2010 Solid Red 370Z * *Touring-Sport-6MT Black Interior Performance:** STILLEN * BERK * UR * MISHIMOTO * K&N * Z1 * ZSPEED * UPREV * DBA Interior: GT-R Red Start/Stop Button * MSA Floor Mats * PW:JDM Exterior: INGS+1 * SEIBON * FUJIMURA * PW:JDM * UAM * KICS * VOLK Last edited by pty370z; 10-30-2012 at 02:56 PM.

10-30-2012, 03:07 PM	#2 (permalink)
B&W_Evader Track Member Join Date: Aug 2011 Location: CA Posts: 972 Drives: slower than before Rep Power: 386	Maybe a bubble... Check for leaks and flush. Hopefully the problem will stay gone. __________________ \|RIP\|6spd-sport\|OSG-LSD\|XP8\|RBF600\|Eibach Sways\|RE-71R\|FI-34Row\|Gen3-CAI\|Yaw P.S.\|

10-30-2012, 03:27 PM	#3 (permalink)
GaleForce A True Z Fanatic Join Date: Aug 2011 Location: Ontario, Canada Posts: 21,749 Drives: Varis Arising II Rep Power: 51864	Looks like coffee __________________ >>>GaleForce's Build<<< >>>FaceBook @3GsCustoms<<<>>>Instagram @GaleForce370z<<< Varis Kamikaze-Z

10-30-2012, 03:38 PM	#5 (permalink)
jcosta79 A True Z Fanatic Join Date: Jul 2012 Location: N/A Posts: 1,430 Drives: N/A Rep Power: 14	I would check on it at least every 2-3K miles and flush out the fluid before it gets that bad again. __________________ 2012 PW NISMO #0559 - GT Spec Brace Kit - Swift Springs - ARK TP & Invidia CBE K&N Intake - UpRev Tune - 15mm Z1 Spacers & Studs - StopTech Slotted Rotors & SS Lines - ZSpeed CMAK with Stage 2 Clutch and Lightweight Flywheel

10-30-2012, 05:48 PM	#6 (permalink)
pty370z Track Member Join Date: Apr 2009 Location: Panama City, Panama Posts: 654 Drives: over the speed limit Rep Power: 17	I found this video (it's a Corvette).. Can this process be replicated for a 370Z..?? Process starts @ 3:50 __________________ 2010 Solid Red 370Z * *Touring-Sport-6MT Black Interior Performance:** STILLEN * BERK * UR * MISHIMOTO * K&N * Z1 * ZSPEED * UPREV * DBA Interior: GT-R Red Start/Stop Button * MSA Floor Mats * PW:JDM Exterior: INGS+1 * SEIBON * FUJIMURA * PW:JDM * UAM * KICS * VOLK

10-30-2012, 06:47 PM	#7 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 29	Yes, it takes me less time to do it than to watch the entire video.

11-01-2012, 02:06 AM	#8 (permalink)
11Thumper Track Member Join Date: Mar 2011 Location: Bay Area, CA Posts: 754 Drives: '11 370Z, '01 S2k Rep Power: 17	I flush the clutch fluid on my S2000 every other oil change.