SR20 Clutch issues driving me nuts - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

solo_ryder · 08-23-2015, 01:34 PM

Blacktop s13 motor / s14 chassis - swap done 10,000km ago
Spec stage 1 clutch new with swap
OEM flywheel resurfaced when swap was done
New slave cyl when swap done
Fresh mt90 with swap

Clutch has been ok since swap, except for the fact that it chatters slightly in first and reverse, but that may be due to bad subframe bushings in the back.

Recently, I have noticed that the pedal has become "chunky" feeling and hard to get into first and reverse.. Feel is also almost gone. I have also noticed that pedal pressure goes down in traffic and the car almost stalls on me as its trying to pull me forward when at a stop light. So I did this:

Replaced the master cylinder thinking it was leaking, filled with fluid and pushed fluid out of hole before installing into car to bleed air out.
New Isis short braided line from damper to slave as old rubber line looking bad
Adjusted clutch to be at maximum throw (adjustment screw at the very end of fork)
gravity bled entire system then bled damper first then slave

Same issue if not worse, engagement is almost off the floor now and issue still exists with it trying to stall car out at lights. I cannot find any leaks anywhere in system, fluid is clean. Very hard to get into gear.

I have also noticed that the slave cyl piston rod is not straight, seems to be at a slight angle? Photos:

http://i.imgur.com/B73XmPH.jpg
http://i.imgur.com/JtZv8t6.jpg

At this point I am thinking there is a internal issue with the pivot ball or pressure plate.. Anyone care to give some ideas? I can barely drive the car.

08-23-2015, 01:34 PM	#1
solo_ryder Zilvia Junkie Join Date: Mar 2011 Location: The True North Posts: 535 Trader Rating: (18) Feedback Score: 18 reviews	SR20 Clutch issues driving me nuts Blacktop s13 motor / s14 chassis - swap done 10,000km ago Spec stage 1 clutch new with swap OEM flywheel resurfaced when swap was done New slave cyl when swap done Fresh mt90 with swap Clutch has been ok since swap, except for the fact that it chatters slightly in first and reverse, but that may be due to bad subframe bushings in the back. Recently, I have noticed that the pedal has become "chunky" feeling and hard to get into first and reverse.. Feel is also almost gone. I have also noticed that pedal pressure goes down in traffic and the car almost stalls on me as its trying to pull me forward when at a stop light. So I did this: Replaced the master cylinder thinking it was leaking, filled with fluid and pushed fluid out of hole before installing into car to bleed air out. New Isis short braided line from damper to slave as old rubber line looking bad Adjusted clutch to be at maximum throw (adjustment screw at the very end of fork) gravity bled entire system then bled damper first then slave Same issue if not worse, engagement is almost off the floor now and issue still exists with it trying to stall car out at lights. I cannot find any leaks anywhere in system, fluid is clean. Very hard to get into gear. I have also noticed that the slave cyl piston rod is not straight, seems to be at a slight angle? Photos: http://i.imgur.com/B73XmPH.jpg http://i.imgur.com/JtZv8t6.jpg At this point I am thinking there is a internal issue with the pivot ball or pressure plate.. Anyone care to give some ideas? I can barely drive the car.