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

KoolKarmaJoe · 07-13-2015, 07:31 PM

Quote:

Originally Posted by eastwest2300

Im excited to get my transmission upgraded.. Im still awaiting my fluids from in the mail. Maybe by this weekend, I could be rocking and rolling.

Still breaking in my "Upgraded" setup. Still pleased with my purchase. I got use to the lighter flywheel, & ACT Clutch Kit. I did notice that there is some minor chatter after car is hot, at idle, with A/C on and in neutral with clutch out. I hear it, but my fiends say they don't hear it. I'm just more "in-tune" with my car than they are. I only hear it with windows down. When widows are up, I just hear the aftermarket True Dual AAM exhaust.
I'm awaiting quote from AAM for a differential upgrade, a Quaife Rear with ZSpeed finned Diff Cover & new bearing setup.

KoolKarmaJoe · 07-13-2015, 07:42 PM

Quote:

Originally Posted by Zbrah

F this. I'm selling the Z and get a bike.

The Z can be improved! Don't give it up yet! We are all making noise hear that is beginning to drawl a lot of attention from Nissan & outside reviewers. No car manufacturer likes their "performance based" models referred to as WEAK &/or having FAULTY COMPONENTS. It's a tough market out there, and Nissan will have to fight to be a contender against other manufacturers.

KoolKarmaJoe · 07-13-2015, 07:50 PM

Quote:

Originally Posted by schellingr

Can a mechanically inclined person here explain in detail why the CSC fails and then goes back to normal?, then fails again (pedal to the floor) and comes back after a while? Sorry not a motorhead here.

My guess, and it is a GUESS, that it happens when fluid/clutch hydraulics get really hot. I'm leaning towards changing my clutch fluid twice a year to be on the safe side due to my spirited driving style & will only use GTR Hydraulic fluid.

jwick · 07-13-2015, 07:55 PM

Quote:

Originally Posted by KoolKarmaJoe

My guess, and it is a GUESS, that it happens when fluid/clutch hydraulics get really hot. I'm leaning towards changing my clutch fluid twice a year to be on the safe side due to my spirited driving style & will only use GTR Hydraulic fluid.

There's nothing special about the GTrR fluid. Use Motul rbf600 synthetic

http://www.racerpartswholesale.com/p...id/Brake_Fluid

eastwest2300 · 07-13-2015, 08:47 PM

Quote:

Originally Posted by jwick

There's nothing special about the GTrR fluid. Use Motul rbf600 synthetic

Brake Fluid - MOTUL RBF 600 Racing Brake Fluid

Thats what I'm using. RBF600

Anifaust · 07-14-2015, 12:52 AM

Best description- they insulated only the lower portion of the tubing that leads from the Master Cylinder to the Slave. This leaves the upper area of the line open to heat sink. Unfortunately there's still a good section of non-protected tube that runs straight past your exhaust lines. Overheated/Boiling fluid + plastic parts = lose.

I am still waiting on the CSC delivery from Zspeed since they were closed all last week. Just got the tracking email today (7/13) and it should be in OKC by 4:30 Wed. That makes it about two weeks downtime now since mine acted up on 7/2 just before the holiday weekend. My tranny locked down in second gear with the shifter in neutral due to my clutch being floor pinned. I haven't heard of anyone else having this issue and the mechanic said it was probably just a fluke combined with my pressure and timing of pulling the shifter into neutral with the jenk pedal.

I'm still having him wrap the exhaust line in thermal kevlar along with the new part replacement.

BamBamZ · 07-14-2015, 04:59 AM

Quote:

Originally Posted by Uxi

What are the sales number of Z's vs what percentage with this issue? Hard to believe I'm an outlier with it happening so soon but I suppose it's possible.

Someone want to crunch the number and get means and standard deviation on the numbers we have to extrapolate likelihood to have CSC failure vs those who get rid of them before it happens, etc?

I actually asked the guy unknowingly for the number of cars that had this replaced under warranty when I was on the phone with nissan some time ago. He said they didn't keep records of warranty repairs...

But our list should be about 86 or 87 cars on our own right now...

Maybe we should start looking into lawyering up, Starting like a gofundme page to pay for said attorney and someone with some legal intelligence to handle it (not it!)

BTW: I got a follow up email from the NHTSA pretty much saying they're investigating the issue and want more information from tire size to where I got the car and copies of invoices... I have the repair invoice and invoice from the Nissan dealership of inspection.

eastwest2300 · 07-14-2015, 07:55 AM

Quote:

Originally Posted by Anifaust

Best description- they insulated only the lower portion of the tubing that leads from the Master Cylinder to the Slave. This leaves the upper area of the line open to heat sink. Unfortunately there's still a good section of non-protected tube that runs straight past your exhaust lines. Overheated/Boiling fluid + plastic parts = lose.

I am still waiting on the CSC delivery from Zspeed since they were closed all last week. Just got the tracking email today (7/13) and it should be in OKC by 4:30 Wed. That makes it about two weeks downtime now since mine acted up on 7/2 just before the holiday weekend. My tranny locked down in second gear with the shifter in neutral due to my clutch being floor pinned. I haven't heard of anyone else having this issue and the mechanic said it was probably just a fluke combined with my pressure and timing of pulling the shifter into neutral with the jenk pedal.

I'm still having him wrap the exhaust line in thermal kevlar along with the new part replacement.

can you take pics of the wrap and the work you guys did, its something I might be interested in doing as well.. thanks man.

jwick · 07-14-2015, 08:42 AM

Quote:

Originally Posted by eastwest2300

can you take pics of the wrap and the work you guys did, its something I might be interested in doing as well.. thanks man.

I wrapped mine in Thermo-Tec heat sleeve. Good for 2k deg, I think.

The HFCs, since removed, are wrapped in header wrap.

If you are going header wrap DEI titanium is the only way to go!

JARblue · 07-14-2015, 08:44 AM

Quote:

Originally Posted by schellingr

Can a mechanically inclined person here explain in detail why the CSC fails and then goes back to normal?, then fails again (pedal to the floor) and comes back after a while? Sorry not a motorhead here.

My understanding is that as the fluid gets dirty, the dirt particles get past the seals on the CMC and/or CSC, allowing air pockets into the clutch system. This is the reason that some people just get a half dead pedal instead of full on failure. Once the seals deteriorate enough, you get stranded. This is also the reason you need to change both the CMC and the CSC at the same time because dirty fluid from the old part can compromise the new part if you just replace one. I also suspect hot fluid will aid the fluid's ability to get past the seals as the fluid is thinner.

eastwest2300 · 07-14-2015, 08:59 AM

Quote:

Originally Posted by jwick

I wrapped mine in Thermo-Tec heat sleeve. Good for 2k deg, I think.

The HFCs, since removed, are wrapped in header wrap.

If you are going header wrap DEI titanium is the only way to go!

Dude, you ARE the man, thank you so much.

Im gonna use my best friend google and find this stuff, thank you sooo much.

KoolKarmaJoe · 07-14-2015, 09:04 AM

Quote:

Originally Posted by jwick

There's nothing special about the GTrR fluid. Use Motul rbf600 synthetic

Brake Fluid - MOTUL RBF 600 Racing Brake Fluid

I agree, it was handy at time of fluid change. Still a better option than the average/no name brands of brake fluid sold at gas stations.

KoolKarmaJoe · 07-14-2015, 09:07 AM

Quote:

Originally Posted by jwick

That's like throwing the baby out with the bath water. Miata and BRZ aren't even in the same ballpark for performance and the WRX has a shitty factory tune that could very well pop your motor. Think that's more of an 'Achilles Hill' than a weak CSC.

If you don't like your Z, trade it in on something else.

Luv the Z, hate the CSC & Nissan's answer to the CSC issues many of us have had, which is "the sound of cricket's". You are correct that Miata & BRZ aren't in the same class. But each passed the Flatbed Truck towing my Z to repair shop for CSC issue!

jwick · 07-14-2015, 09:19 AM

Quote:

Originally Posted by KoolKarmaJoe

Luv the Z, hate the CSC & Nissan's answer to the CSC issues many of us have had, which is "the sound of cricket's". You are correct that Miata & BRZ aren't in the same class. But each passed the Flatbed Truck towing my Z to repair shop for CSC issue!

So did a bunch of econoboxes but you fail to mention those

jwick · 07-14-2015, 09:20 AM

Quote:

Originally Posted by eastwest2300

Dude, you ARE the man, thank you so much.

Im gonna use my best friend google and find this stuff, thank you sooo much.

Save you the trouble

http://m.summitracing.com/parts/the-14010

And it is 2k deg protection

07-14-2015, 12:52 AM	#981 (permalink)
Anifaust Base Member Join Date: Jan 2013 Location: OKC Posts: 17 Drives: '09 370Z Rep Power: 12	Best description- they insulated only the lower portion of the tubing that leads from the Master Cylinder to the Slave. This leaves the upper area of the line open to heat sink. Unfortunately there's still a good section of non-protected tube that runs straight past your exhaust lines. Overheated/Boiling fluid + plastic parts = lose. I am still waiting on the CSC delivery from Zspeed since they were closed all last week. Just got the tracking email today (7/13) and it should be in OKC by 4:30 Wed. That makes it about two weeks downtime now since mine acted up on 7/2 just before the holiday weekend. My tranny locked down in second gear with the shifter in neutral due to my clutch being floor pinned. I haven't heard of anyone else having this issue and the mechanic said it was probably just a fluke combined with my pressure and timing of pulling the shifter into neutral with the jenk pedal. I'm still having him wrap the exhaust line in thermal kevlar along with the new part replacement. KoolKarmaJoe and WI_Hedgehog like this.

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