Nissan 370Z Forum - View Single Post - I could use some advice on Master/Slave cylinder issues...

nr7 · 06-19-2021, 05:53 PM

Thanks for everyone's help so far.

I have driven from Savannah to Charleston then up to Greenville, SC. The clutch fluid reservoir remains clear.

Let's see what we know and what we don't.

We know that...

The clutch, seemingly, worked fine from 28 to 38k miles.
The clutch pedal then started returning with progressively less vigor over a week or two.
Soon the pedal started sticking a few inches from full return.
That when bled, black gunk was found in the system and the pedal would not return at all.
Since the master cylinder was replaced with OEM parts, the clutch started behaving pretty much as before.
That Joe at zSpeed does not have the parts he needs to ship a slave relocation kit, but he expects them soon.
The fluid is pretty much perfectly clear after 2 days (700 miles) of driving. Around Charleston involve lot's of stop go and clutch use.

We are pretty sure...

That the previous owner replaced the OEM clutch "with a competition clutch and billet flywheel" sometime between 10 and 15K miles "because it was slipping" and "I didn't like the clutch."

I believe this because the previous owner had little reason to lie as it would not make the car more sellable. I also have reason to believe that he followed this forum to some degree at least when the car was newish.

We don't know...

If the slave or master cylinders were addressed or to what degree when the clutch was replaced.
What clutch and flywheel were purchased and installed.
A hundred or so other little factoids that would be nice to know right now.

My plans with ZiZi running reliable and strong would be to work my way through the Nantahala National Forest to the Tail of the Dragon, then slowly up the Blue Ridge Highway w/side trips while making my way toward DC.

My choices seem to be...

To stay here, while waiting for zSpeed and/or others to get the parts needed and search for someone within a 5hr radius to fit me into their work schedule and do the installation.
To proceed gingerly forward along my current route, nervous as a cat, watching my fluid color while waiting for Defcon 5 and becoming broke down in the heart of Deliverance country, USA. "This river don't go to no Aintree." And try to arrange CSC relocation as soon as I get parts and find a place along my route.
Put her top down, light a phatty, turn off VDC, rev it and drop the clutch. F*** Thelma. F*** Louise (if she'd have me). And go full bore, caution to the wind until I launch her into a river canyon or find myself back in Salt Lake.
Some nuance prudently in between the aforementioned options.

Further speculation and advice would be appreciated.

.

.

06-19-2021, 05:53 PM	#12 (permalink)
nr7 Base Member Join Date: Feb 2021 Location: Wasatch Mountains Posts: 35 Drives: 2010 Roadster Sport Rep Power: 4	Thanks for everyone's help so far. I have driven from Savannah to Charleston then up to Greenville, SC. The clutch fluid reservoir remains clear. Let's see what we know and what we don't. We know that... The clutch, seemingly, worked fine from 28 to 38k miles. The clutch pedal then started returning with progressively less vigor over a week or two. Soon the pedal started sticking a few inches from full return. That when bled, black gunk was found in the system and the pedal would not return at all. Since the master cylinder was replaced with OEM parts, the clutch started behaving pretty much as before. That Joe at zSpeed does not have the parts he needs to ship a slave relocation kit, but he expects them soon. The fluid is pretty much perfectly clear after 2 days (700 miles) of driving. Around Charleston involve lot's of stop go and clutch use. We are pretty sure... That the previous owner replaced the OEM clutch "with a competition clutch and billet flywheel" sometime between 10 and 15K miles "because it was slipping" and "I didn't like the clutch." I believe this because the previous owner had little reason to lie as it would not make the car more sellable. I also have reason to believe that he followed this forum to some degree at least when the car was newish. We don't know... If the slave or master cylinders were addressed or to what degree when the clutch was replaced. What clutch and flywheel were purchased and installed. A hundred or so other little factoids that would be nice to know right now. My plans with ZiZi running reliable and strong would be to work my way through the Nantahala National Forest to the Tail of the Dragon, then slowly up the Blue Ridge Highway w/side trips while making my way toward DC. My choices seem to be... To stay here, while waiting for zSpeed and/or others to get the parts needed and search for someone within a 5hr radius to fit me into their work schedule and do the installation. To proceed gingerly forward along my current route, nervous as a cat, watching my fluid color while waiting for Defcon 5 and becoming broke down in the heart of Deliverance country, USA. "This river don't go to no Aintree." And try to arrange CSC relocation as soon as I get parts and find a place along my route. Put her top down, light a phatty, turn off VDC, rev it and drop the clutch. F* Thelma. F* Louise (if she'd have me). And go full bore, caution to the wind until I launch her into a river canyon or find myself back in Salt Lake. Some nuance prudently in between the aforementioned options. Further speculation and advice would be appreciated. . . Last edited by nr7; 06-19-2021 at 10:56 PM.