2017 370z

Darwins Child

The above has made me think of something.

Considering how many manuals have the CSC problem, maybe used manuals with the Zspeed already on board are common. I'm thinking that if someone is selling a used sport manual in fantastic condition at a price close to that of the new base, and it already has the Zspeed, I might once again consider a manual. Maybe I can browbeat my wife into trying out a vehicle that has the rev-match feature. If shifting is as smooth as it is reported to be, just maybe she'd go for it.

Is the Zspeed slave (plus a new master cylinder for the clutch) a "one and done" solution? That is, does it last forever? Is that an external bleed line I see on the below photo (where the red arrow is pointing)?

Does having rev-match extend the life of a clutch plate? I imagine that it would.

Thanks.

Attached Images

CSC.jpg (60.3 KB, 27 views)

mishuko

there is a specific brand of the after market clutch that will destroy your zspeed slave. I can't remember it off the top of my head but the zspeed will be fine with your stock clutch.

as LMB said you have 2 routes. wait til it fails or just do it. I took the later since I like to go on road trips.

definitely try the SRM mode with the manual. you'll be amazed how awesome it is on the down shifts. ie @60 clicks drop from 3rd to 2nd and listen to the music

Darwins Child

If we look at a vehicle that already has the Zspeed, I'll definitely ask if the clutch is OEM. If it isn't, before doing anything, I'll come back here and ask.

Depending on the asking price of the vehicle, I suppose we could add on the cost of the Zspeed and see if it makes financial sense to go further. I understand that Nissan might even be willing to do the job of installing it rather than their own part. If the slave problem is as extensive as it seems, maybe they've got a NASCAR pit crew all trained up to do the job in an hour...............while blindfolded. I can give a local Nissan dealer and other shops a call to get an estimate for the job, including new master cylinder.

If the OEM slave is certainly going to leak at some point down the road, I would think that installing the Zspeed before the slave starts leaking might make more sense in case the fluid ruins the clutch plate, no?

As I said much earlier in this thread, I am intrigued by the rev match feature. How does whatever computer that controls SRM "know" what gear you're going to shift into? It can't. So it must have to wait until you actually put the gear lever into a particular gear's slot and only then, even before you are able to lift the clutch, increase or decrease engine (flywheel) rpm to match that of the clutch plate.

If so, this is quite a trick, because it doesn't take long for that left foot to come up when you're going for broke. The SRM computer must have continuous, instantaneous control of engine RPM at all times (at least when the clutch pedal is going down), regardless of how your foot has adjusted the accelerator pedal, correct?

So, AFTER the rpm-synchronized plate and flywheel have come together, does the position of accelerator pedal instantly take/regain control of engine throttle/rpm? That is, say you lift your foot completely off the accelerator after you depress the clutch. What happens if you then make a gear change and you lift up the clutch? Does the computer still synchronize engine rpm for the mating, regardless of accelerator position, but then, after the mating, instantly allow the accelerator position to take control of the throttle/engine rpm?

BTW, is SRM something that is always on until you turn if off, or is it always off until you turn it on?

Thanks.

mishuko

for the SRM.. uhh... drive it. lol you can clutch gas off downshift (srm kicks in as you enter the gear positiong gate) and clutch off. tada!