Wilwood Heavy-Duty Clutch Master Cylinder

Fountainhead · 07-12-2013, 12:00 PM

Quote:

Originally Posted by Joe@ZSpeed

We always recommend a new master cylinder with a new slave, Its like replacing your oil and not the filter.

Master CYL is just as worn as the slave, The same amount of crap/dirt and grime is in the master as is in the slave cylinder.

It's a matter of once you open the system, if the master is weak, it will not work correctly.

Our slave puts no more load on the master (actually a tiny bit less load/pressure) than the stock slave does, The clutch itself is what's going to increase the load on both parts.

The master cylinder is a $100 part, Why would anyone spend $1500+ on a clutch, Slave, Flywheel and not replace the cheapest part in the system?

Makes sense, thanks!

Rusty · 07-12-2013, 07:09 PM

Quote:

Originally Posted by Joe@ZSpeed

Nothing yet, We have not had time to work on it.....

.......and why not?

MDG-Z · 07-12-2013, 07:20 PM

Quote:

Originally Posted by Joe@ZSpeed

We always recommend a new master cylinder with a new slave, Its like replacing your oil and not the filter.

Master CYL is just as worn as the slave, The same amount of crap/dirt and grime is in the master as is in the slave cylinder.

It's a matter of once you open the system, if the master is weak, it will not work correctly.

Our slave puts no more load on the master (actually a tiny bit less load/pressure) than the stock slave does, The clutch itself is what's going to increase the load on both parts.

The master cylinder is a $100 part, Why would anyone spend $1500+ on a clutch, Slave, Flywheel and not replace the cheapest part in the system?

Because it is in a different location and adds a lot of extra labor charges if you aren't doing it yourself...? Paying for labor to use a crap part again is a hard pill to swallow.

The limited knowledge I have of the CSC is that when it fails, it leaks all the fluid into the bell housing contaminating the clutch disk? My pedal began sticking halfway when releasing it so I checked the fluid level and it was empty. Filled it with more fluid and it works for now again, and the leak seems slowish? Has to be failed CSC though with fluid loss and its not leaking around the master. Should I be assuming I will have to replace the clutch when I replace the CSC?

My G35 6mt was just as bad with all the stupid little things that were poorly designed and failed. I should have known better than to trust that the new Z would be better. Effing Nissan.

axmea? · 07-12-2013, 08:08 PM

Quote:

Originally Posted by Joe@ZSpeed

We always recommend a new master cylinder with a new slave, Its like replacing your oil and not the filter.

Master CYL is just as worn as the slave, The same amount of crap/dirt and grime is in the master as is in the slave cylinder.

It's a matter of once you open the system, if the master is weak, it will not work correctly.

Our slave puts no more load on the master (actually a tiny bit less load/pressure) than the stock slave does, The clutch itself is what's going to increase the load on both parts.

The master cylinder is a $100 part, Why would anyone spend $1500+ on a clutch, Slave, Flywheel and not replace the cheapest part in the system?

I agree. Mine went out at 12k and everything was replaced. SC, CMC, lines, etc. Dealer covered but they used your exact analogy.

houkouonchi · 08-15-2013, 04:41 PM

Quote:

Originally Posted by Joe@ZSpeed

Nothing yet, We have not had time to work on it.....

Any new updates? My stock master just died after getting the southbend clutch/flywheel after less than 10k miles in only 6 months. The new dealer I am going to (fontana nissan) recommended the willwood HD one but of course that is for 350z. They said they thought they just did one on a 370z the other day but sure enough it was just a 350z and not a 370z.

I really dont want another master dieing in 6 months. Do you think the replacement will be available in another 6 months?

Pheonix · 05-05-2014, 01:56 PM

Quote:

Originally Posted by Joe@ZSpeed

We always recommend a new master cylinder with a new slave, Its like replacing your oil and not the filter.

Master CYL is just as worn as the slave, The same amount of crap/dirt and grime is in the master as is in the slave cylinder.

It's a matter of once you open the system, if the master is weak, it will not work correctly.

Our slave puts no more load on the master (actually a tiny bit less load/pressure) than the stock slave does, The clutch itself is what's going to increase the load on both parts.

The master cylinder is a $100 part, Why would anyone spend $1500+ on a clutch, Slave, Flywheel and not replace the cheapest part in the system?

This sounds exactly like what happened to us, and oh how I wish someone had directed me here or told me to order a new Master Cylinder when I bought everything else. 4 of us, including several pro gearheads spent virtually the entire weekend yesterday trying to figure out what the frack the issue was, bleeding every technique we could think to try and getting limited resistance.

It would build some resistance, usually about halfway...very occasionally it would get very, very close to full resistance but then would inevitably lose it again...or we'd start the car, and it would go into gear once or twice then not again.

The first time we learned that the hard way thinking we were done and taking it on a test drive around the neighborhood only to become stranded...but we figured out if we gravity bled with the clutch fully extended we could "fake it" and get it into gear, enough to drive back home anyway.

Finally figured it had to be the Master, because we did replace with the heavy duty slave cylinder...came around looking here and elsewhere and everything I've read seems to point to the Master.

So I'm very much hoping that's the case, as we have one coming in tomorrow and I need the car driveable by Wednesday.

Plus, ZDayZ is coming up...and I can't be out of the Z for that

Plasmite · 05-05-2014, 04:39 PM

So everyone still going with OEM or is there finally an aftermarket solution?

Or is This still the way to go?

houkouonchi · 05-05-2014, 04:52 PM

Quote:

Originally Posted by Plasmite

So everyone still going with OEM or is there finally an aftermarket solution?

Or is This still the way to go?

I am on my third OEM one and likely soon to be on the 4th

VQZ34nismo · 06-12-2014, 01:19 PM

I just replaced my clutch/flywheel, I also did the CSC from Z concept and my master went out also. The transmission has 31k.

RickyRozay · 08-28-2014, 03:47 PM

Quote:

Originally Posted by Joe@ZSpeed

Nothing yet, We have not had time to work on it.....

hey joe, my pedal dropped this past weekend and my 3 year 36k mile warranty literally expired 16 hours before I brought the vehicle in so I'm trying to fight that and get it under warranty, but if they don't give me a break have y'all come out with an aftermarket slave cylinder and master cylinder for a 2011 370?

batboyvaj · 08-29-2014, 07:59 AM

With all these blown MC's, I'm wondering if it has something to do with having an internal csc? If you think about it, everytime you push the clutch pedal, the csc is picking up all the clutch dust sitting on the shaft. That dust gets suspended in the fluid and is very abrasive. That would probably make any seal go bad in no time.

I recently put on the z1 CSCEK on my car with a new master. Let's see if it makes a difference with the slave on the outside of the bell housing.

05-05-2014, 04:39 PM	#22 (permalink)
Plasmite Enthusiast Member Join Date: Aug 2012 Location: Canada Posts: 259 Drives: '12 M6 Panty Peeler Rep Power: 14	So everyone still going with OEM or is there finally an aftermarket solution? Or is This still the way to go? __________________ WISHLIST

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06-12-2014, 01:19 PM	#24 (permalink)
VQZ34nismo Base Member Join Date: Oct 2013 Location: Miami Beach Posts: 145 Drives: 2010 370z Nismo Rep Power: 12	I just replaced my clutch/flywheel, I also did the CSC from Z concept and my master went out also. The transmission has 31k.

08-29-2014, 07:59 AM	#26 (permalink)
batboyvaj Base Member Join Date: Jun 2011 Location: mn Posts: 111 Drives: 2011 370z Rep Power: 15	With all these blown MC's, I'm wondering if it has something to do with having an internal csc? If you think about it, everytime you push the clutch pedal, the csc is picking up all the clutch dust sitting on the shaft. That dust gets suspended in the fluid and is very abrasive. That would probably make any seal go bad in no time. I recently put on the z1 CSCEK on my car with a new master. Let's see if it makes a difference with the slave on the outside of the bell housing.