Clutch help pedal hard as a rock.

south · 04-13-2021, 08:43 PM

Ok so here’s a rundown of the setup i am running for reference.
I have an action stage 3 clutch with the upgraded Hd internal slave, Brand new zspeed clutch hose, with a brand new master cylinder. Everything from the master cylinder down to the clutch, tranny, hose, and the csc tube is brand new. My clutch fluid always go black for some reason and im wondering if this has anything to do with my dilemma. So i warmed the car up drove it and then all of a sudden i go to shift at abour 5k rpms and then the pedal gets really stiff like super hard. It still does shift into gear 1st and 2nd gear. It goes into gears fine shifting but the pedal just gets stiff and it has a sort of whine to it when i depress the clutch. Also theres a somewhat clicking noise when i let off at the grabbing point. Wondering if anyone else has had this problem and what the solution was. I described the problem to the best of my ability lol just need some help. The tranny is already dropped. No pieces fell out or anything everything seems intact. But the csc has some noise when i spin it almost like a bearing noise. Any help is appreciated thank you!

Sharad909 · 04-25-2021, 05:21 PM

If your oil is going black quickly, there is most likely lots of build up dirt in the system. Try bleeding it until it gets clear. Also, your situation sounds more hardware. Contact Zspeed and ask if the part should sound like that. I don't think it should... but then again, I didn't install my unit lol

stansens · 04-25-2021, 05:37 PM

There should be zero noise when spinnning csc. All of your symptoms lead me to believe that the csc has failed. If the new clutch pressure plate is too heavy or strong for the csc then the bearing will fail prematurely. If the tranny is out then I would remove the csc and have it checked out. Make sure it can slide easily alon input shaft as well. Hope that gives you some ideas.

04-13-2021, 08:43 PM	#1 (permalink)
south Base Member Join Date: Apr 2019 Location: New York Posts: 34 Drives: 09 370z Yellow 6Mt Rep Power: 6	Clutch help pedal hard as a rock. Ok so here’s a rundown of the setup i am running for reference. I have an action stage 3 clutch with the upgraded Hd internal slave, Brand new zspeed clutch hose, with a brand new master cylinder. Everything from the master cylinder down to the clutch, tranny, hose, and the csc tube is brand new. My clutch fluid always go black for some reason and im wondering if this has anything to do with my dilemma. So i warmed the car up drove it and then all of a sudden i go to shift at abour 5k rpms and then the pedal gets really stiff like super hard. It still does shift into gear 1st and 2nd gear. It goes into gears fine shifting but the pedal just gets stiff and it has a sort of whine to it when i depress the clutch. Also theres a somewhat clicking noise when i let off at the grabbing point. Wondering if anyone else has had this problem and what the solution was. I described the problem to the best of my ability lol just need some help. The tranny is already dropped. No pieces fell out or anything everything seems intact. But the csc has some noise when i spin it almost like a bearing noise. Any help is appreciated thank you!

04-25-2021, 05:21 PM	#2 (permalink)
Sharad909 Base Member Join Date: Nov 2019 Location: SoCal Posts: 65 Drives: 2012 370Z 6MT Sport Rep Power: 3361	If your oil is going black quickly, there is most likely lots of build up dirt in the system. Try bleeding it until it gets clear. Also, your situation sounds more hardware. Contact Zspeed and ask if the part should sound like that. I don't think it should... but then again, I didn't install my unit lol __________________ 12 370Z- Touring- Sport- 6MT- Z1 Anti Starv, 34R Setrab Kit, 20/25MM \| Konig 18x10.5 W/ Hankook RS4 \| PowerStop TrackSpec Pads \| TTP Single Exit , & Swift Springs \| Previously Owned: 18 Q50- 480RWHP- 12.2 @118- Sold, 92 240SX Built SR

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04-25-2021, 05:37 PM	#3 (permalink)
stansens Base Member Join Date: Nov 2015 Location: toronto, canada Posts: 144 Drives: 2016, 370z Rep Power: 193	There should be zero noise when spinnning csc. All of your symptoms lead me to believe that the csc has failed. If the new clutch pressure plate is too heavy or strong for the csc then the bearing will fail prematurely. If the tranny is out then I would remove the csc and have it checked out. Make sure it can slide easily alon input shaft as well. Hope that gives you some ideas.