NEW Clutch not Engaging...Money Pit

phunk

I would send the pics to JWT to ask why that collar would come off the CSC and be stuck to the clutch disk spline hub like that. Perhaps its from over extension. Or perhaps the plate was wobbling around if the hardware was coming out. I think I would have needed to see everything as it was before removing any of it other than the trans to even attempt and diagnose.

The 2 top bolts for the trans missing would not make a difference really. The trans is aligned to the block by a pair of dowel pins, so those bolts being gone isnt going to cause a misalignment.

Clutch kit appears reusable, but I would inspect further. CSC kit appears to need repair/rebuild/replacement.

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Spaghetti999

Yes, I wonder what could have been rubbing on the pressure plate to cause that ting

Maybe the JWT CSC isn't compatible with the Z1 Clutch kit...?

You guys really know your stuff...I reached out to JWT 3 months ago and their exact suspicions were just that... that the CSC was possibly overextending which can lead to unpredictable symptons/damage.

What exactly does this mean? Is the JWT CSC just not compatible with Z1's kit?

I will not be reusing the original clutch kit- and will be moving to a CMAK from zspeed

I will have it looked at by someone- maybe I can keep the Z1 clutch kit for future use or resale at low cost if it's even still good?

ZoomZ

Looks like they used a ton of grease on input shaft that has flung out on pressure plate. (the rub ring)

Also, the damge to clutch disk hub is probably from them ramming the transmission in not propertly aligned to engine, or they didnt use the clutch alignment tool properly in first place.

Don't go back there. I did my transmission twice on my back and I never forgot the tow top bolts. Yes, hard to get at, but not impossible. A shop with a hoist it's trivial.

Those two bolts would'nt casue misalingment unless the rest of the mount bolts were loose.

Dont go back there again.

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“Action without vision is a nightmare.”

Spaghetti999

A few questions...
The grease was placed by a friend as we were taking pictures. I noticed he put grease. Is that even recommended for the input shaft? Will wipe it off before reinstalling everything if it isn't

Assuming it's the CSC overextension that caused problems, was this avoidable. Is there some adjustable mechanism that can prevent this, or are these parts simply not compatible with one another?

ZoomZ

I think you have incompatible parts. Possible installation errors.

As for input shaft greasing. From FSM:

: Apply lithium-based grease including molybdenum disulphide.

Attached Images

Clutch.jpg (575.1 KB, 5 views)

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“Action without vision is a nightmare.”

Rusty

Believe his csc is the wrong one for this pressure plate, flywheel combo.

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obender66

Just noticed the thread...I went through a lot of issues with JWT CS installed.
Stock CSC went out at 60K km. I installed ACT street clutch and flywheel with JWT CSC.
In a about 15K I started getting hard shifts and no gears at stand still. Shop blamed it on the clutch and I went with Exedy OEM. Same issues after short while, dirty fluid, hard shifts or no gears.
Adjusting pedal travel and bleeding the system helped for couple of weeks and then problem would come back.

What I noticed is that gears would shift better with clutch pedal only halfway in. I adjusted pedal travel (lost cruise control and got "key" light, but that I was aware how to fix)-got better, but would still have "bad days". Or no gears upon startup-not even reverse.

So few weeks ago I bit the bullet and installed Z1 CSC elimination V2 and new Exedy OEM clutch. Old Exedy had no wear and now I have a spare clutch. JWT CSC looks fine, no leaks, no wear marks or gouging. I do not know why it did not work...maybe there was some twist around shaft axis, or some fluid expansion within the cylinder.

My suggestion-ditch CSC set up and go for elimination kit once and for all. I had 3 clutch jobs in 3 years, that is f...$$$!

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2016 370Z Base/Setrab/AEM/Uprev/M7 Japan/Magnaflow/Quaife/Wilwood/300 whp
2003 G35 sedan 6MT(good bye-after 15 years together )

Spaghetti999

3 clutch jobs...ouch, that is BRUTAL!

This 2nd one in a matter of a few months is painful, i cannot imagine a 3rd
CSC CMAK Here we go

obender66

This is pic of JWT CSC. No leaks, but it looks off center. Not sure if it means anything at all.
Would be nice to get feedback from JWT-that was $350 part which worked worse and provided less mileage than OEM.

Attached Images

jwt.jpg (255.5 KB, 11 views)

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2016 370Z Base/Setrab/AEM/Uprev/M7 Japan/Magnaflow/Quaife/Wilwood/300 whp
2003 G35 sedan 6MT(good bye-after 15 years together )

Spaghetti999

UPDATE: I removed the trans and installed the new clutch kit myself but could not get the trans/engine mated together, gave up after 8 hours. My mechanic just put everything back for me, CMAK Delete kit, OEM CMC etc. Fresh fluids, clutch/trans

one thing...car drives great, already $7000 sunk into this. Nightmare is...i felt clutch pedal vibrations randomly already when shifting around 3k-4k rpms...I am worried. It's the same problem from the previous install/failed kit. I contacted JWT when my previous kit and csc failed after only 4k miles and he said this ..."there is an air gap between that sleeve and the disc's hub. So the piston on the CSC was pushed so far forward that it broke the clip off and pushed it onto the disc's hub.* At that point the piston and bearing are no longer contained on the body of the CSC and the hydraulic*seals no longer work.Over travel issues can be caused by problems with the master cylinder*and or the adjustment of the clutch pedal's travel and free play."

Can someone translate this to a noob? Did my previous fresh setup fail because of lack of adjustment to the master cylinder and clutch pedal. Am I now experiencing the same issues and will require adjustment?

ZoomZ

There is a sweet spot where you must push up on engine even if transmission looks aligned. Obvioulsy two people are require for this.

As for new clutch vibrations. Give it time to break in. Drive gently for first 1000km (normal shifts etc) Let eveything work in, including CMC and Slave cylinder.

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“Action without vision is a nightmare.”

Spaghetti999

I am not convinced this will solve the issue. The vibration was present on the last kit and only worsened. It seems I need to adjust the cltuch pedal and master cylinder rod in some way?

https://blog.specialtyz.com/?page_id=178

ZoomZ

So you put in a CMAK with an OEM Clutch/PP assembly from Zspeed? which clutch did you buy? I think he only sells the Exedy version for OEM.

And a new OEM Clutch Master? OEM Flywheel?

Adjusting pedal will only change engagement height. It's worth a try. Not sure how it's going to remove vibrations. I could be wrong.

Do you have any other mods, like transmission mount etc?

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“Action without vision is a nightmare.”

Spaghetti999

this is the kit I bought, it has the Exedy clutch, comes with an OEM master. No other mods.

I'm only thinking of adjusting pedal/master rod b/c JWT noted my previous kit with same vibration was overextending and stated that such problems can be caused by adjustment of the master cylinder/clutch pedal travel/free play

https://zspeed.com/products/zspeed-p...7%20Q60%20G35S

ZoomZ

But that was a whole lot different set up.

Check under the car for broken exhaust hangers (the rubber).

Check loose exhaust points and leaks. ( exhaust did come off for transmission removal)

Check your Transmission mount points etc.

check your drive shaft mount bolts. etc.

__________________
“Action without vision is a nightmare.”