JWT clutch is just too damn good... unfortunately...

1slow370 · 03-01-2011, 03:49 AM

i have a minor update on my csc, i'm still halfway done, havent gotten anywhere after that thanks to many problems in my life/work schedule, so i'm saying F the whole R/d thing and looking into adapting the most awesome csc to ever grace a mid-am car into our setup, gotta make a few calls do, just a bit of machining and call it done and never worry about it again. the thing i'm worried about yet with the zspeed one is it appears to still have the same flimsy style piston in it whereas the one i'm looking at can actually be used to jack up a car wheel if you wanted to. It also promises less thrust bearing stress, and weighs less than .75 of a pound. the company also sells a full race clutch and flywheel set rated for over 500ftlbs. single disc and more for the multidisc(up to 4) that weighs under 20lbs for the whole flywheel, ringgear, clutch, and csc.

KillerBee370 · 03-01-2011, 07:56 AM

Quote:

Originally Posted by 1slow370

i have a minor update on my csc, i'm still halfway done, havent gotten anywhere after that thanks to many problems in my life/work schedule, so i'm saying F the whole R/d thing and looking into adapting the most awesome csc to ever grace a mid-am car into our setup, gotta make a few calls do, just a bit of machining and call it done and never worry about it again. the thing i'm worried about yet with the zspeed one is it appears to still have the same flimsy style piston in it whereas the one i'm looking at can actually be used to jack up a car wheel if you wanted to. It also promises less thrust bearing stress, and weighs less than .75 of a pound. the company also sells a full race clutch and flywheel set rated for over 500ftlbs. single disc and more for the multidisc(up to 4) that weighs under 20lbs for the whole flywheel, ringgear, clutch, and csc.

Standing by sir.

Spddracer · 03-06-2011, 06:07 PM

Quote:

Originally Posted by 1slow370

i have a minor update on my csc, i'm still halfway done, havent gotten anywhere after that thanks to many problems in my life/work schedule, so i'm saying F the whole R/d thing and looking into adapting the most awesome csc to ever grace a mid-am car into our setup, gotta make a few calls do, just a bit of machining and call it done and never worry about it again. the thing i'm worried about yet with the zspeed one is it appears to still have the same flimsy style piston in it whereas the one i'm looking at can actually be used to jack up a car wheel if you wanted to. It also promises less thrust bearing stress, and weighs less than .75 of a pound. the company also sells a full race clutch and flywheel set rated for over 500ftlbs. single disc and more for the multidisc(up to 4) that weighs under 20lbs for the whole flywheel, ringgear, clutch, and csc.

Thrust bearing stress comes from the clutch itself, not the slave. The csc itself has absolutely nothing to do with it.

These is nothing flimsy about the ZSpeed slave and has been in many cars for over a year now, It has been in a drift car for the entire life of a OS giken twin plate that does nothing but drift and is now on its second rebuild of that twin plate and still going strong.

1slow370 · 03-06-2011, 09:49 PM

actually the design of the bearing contact on the front of the slave cylinder can actually effect the force applied to the thrust bearing as well. due to lever shaped nature of pressure plate fingers the contact patch actually changes in size throughout the stroke of clutch engagement and different designs of bearing face and finger angle can cause side loads imparted to the clutch as you now need to actuate both the clutch itself and over come the these forces as well. the clutch imparts ZERO force on the thrust bearing, all of the axial pressure applied come from the throwout bearing overcoming friction and the spring force of the clutch in order to actuate it. Zspeed has done a good job with there upgraded (what looks to still be a valeo unit) csc as i'm sure it has no more problem with the o-ring in the base as the metal base probably doesn't distort as much as the plastic one did if there even is an o-ring anymore. But it seems to use the same bearing lock ring and plastic piston that the factory unit uses.

The company i am looking at makes multi-plate clutches, fly wheels, and hydraulic throwout bearings for many many full on drag cars, Midwest america series cars, formula 100 cars, and several other venues of professional racing, the parts are made entirely in the USA, and they don't carry the crazy upmarket prices you find on japanese parts. the factory CSC was like $260 from nissan, the one i'm looking at is full race forged and cnc machined aircraft grade aluminum and is proven to be damn near indestructible.

Spddracer · 03-07-2011, 09:23 AM

Quote:

Originally Posted by 1slow370

actually the design of the bearing contact on the front of the slave cylinder can actually effect the force applied to the thrust bearing as well. due to lever shaped nature of pressure plate fingers the contact patch actually changes in size throughout the stroke of clutch engagement and different designs of bearing face and finger angle can cause side loads imparted to the clutch as you now need to actuate both the clutch itself and over come the these forces as well. the clutch imparts ZERO force on the thrust bearing, all of the axial pressure applied come from the throwout bearing overcoming friction and the spring force of the clutch in order to actuate it. Zspeed has done a good job with there upgraded (what looks to still be a valeo unit) csc as i'm sure it has no more problem with the o-ring in the base as the metal base probably doesn't distort as much as the plastic one did if there even is an o-ring anymore. But it seems to use the same bearing lock ring and plastic piston that the factory unit uses.

The company i am looking at makes multi-plate clutches, fly wheels, and hydraulic throwout bearings for many many full on drag cars, Midwest america series cars, formula 100 cars, and several other venues of professional racing, the parts are made entirely in the USA, and they don't carry the crazy upmarket prices you find on japanese parts. the factory CSC was like $260 from nissan, the one i'm looking at is full race forged and cnc machined aircraft grade aluminum and is proven to be damn near indestructible.

Ram, Tilton or MCloed?

Too make this simple, If you move the contact area of the bearing face in, of course the lever ratio would be lighter. The 370 or 350 isn't going to have thrust bearing issues regardless with the loads it is seeing with the heaviest of clutches made for them at this point. The bearing the ZSpeed slave uses is self centering, Probably what you think is a retainer, This means the bearing will center itself to reduce/eliminate any side loads.

You will change load applied very little by moving the finger contact area in, You can only go in so far and at this point it is as far in as in can safely be with a single disk clutch. At the most, a 1/4" in is all you can go.

You mention how the angle changes on the diaphragm spring during release, Do you realize how far the fingers actually move on a clutch to release it fully?
Have you set-up the stock system to find out how far it moves with a full pedal stroke? Do you know how much "Too Far" is so you don't damage the pressure plates?

There are no plastic parts in the ZSpeed slave, The bearing lock ring doesn't do anything once the slave is installed, All the bearing does is push on the bearing sleeve which on the Zspeed slave is steel, Not plastic.

ZSpeed now has a slave kit for the OS Giken clutches which in our opinion are the best multi plate clutches available. This set up already moves the finger contact area in as far as possible too offer a lighter pedal feel.

NewYorkJon34 · 03-07-2011, 01:21 AM

Any updates on the ultimate clutch set-up, and where to buy?

NewYorkJon34 · 03-07-2011, 02:31 PM

So what's the best complete clutch + proper csc to buy? I plan on supercharging (450hp-500hp)

BOLIO 671 · 03-07-2011, 10:43 PM

I recently installed the ZSpeed HD Slave and Southbend DXD Clutch/Flywheel combo...

I can tell you and can confirm that there is not one plastic piece in the Zspeed HD Slave...Even my friend that helped me do the install who works for Nissan as a Tech was amazed at the craftsmanship of the product...especially in comparison the stock slave which is a peice of crap...

Here are some pics I took of the slave and clutch kit when it was installed...

1slow370 · 03-08-2011, 04:23 AM

see i would wan't someone to dismantle the csc so i could verify its sturdiness with my on two eyes. When my **** breaks i skip the whole "upgraded" phase and shoot for the "this mother fer's never gonna break" level.

NewYorkJon34 · 03-09-2011, 06:42 AM

so is the zspeed set-up the way to go? I just want to be able to install a new clutch and not have to worry about the damn csc breaking.

ChrisSlicks · 03-09-2011, 08:15 AM

Quote:

Originally Posted by NewYorkJon34

so is the zspeed set-up the way to go? I just want to be able to install a new clutch and not have to worry about the damn csc breaking.

If you are installing a new clutch (which technically requires a new CSC anyway) then this currently seems like the best option on the market. It's been for sale for a while on the 350 sites and people seem happy, time will tell how happy but it appears several times better than stock.

It would also appear that spddracer either works for Zspeed or is closely affiliated.

Spddracer · 03-11-2011, 07:48 AM

Quote:

Originally Posted by NewYorkJon34

so is the zspeed set-up the way to go? I just want to be able to install a new clutch and not have to worry about the damn csc breaking.

Yes

BOLIO 671 · 03-12-2011, 05:59 AM

Quote:

Originally Posted by NewYorkJon34

so is the zspeed set-up the way to go? I just want to be able to install a new clutch and not have to worry about the damn csc breaking.

Quote:

Originally Posted by Spddracer

Yes

1slow370 · 03-10-2011, 03:14 AM

so tell me then why does it look EXACTLY like valeo p/n 804534?

your wrong

Edit: MUhahahahaha

Spddracer · 03-10-2011, 06:35 AM

Quote:

Originally Posted by 1slow370

so tell me then why does it look EXACTLY like vale o p/n 804534?

your wrong

Edit: MUhahahahaha

You're still wrong, Let me try this again

NOT MADE BY VALEO.

03-01-2011, 03:49 AM	#1 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	i have a minor update on my csc, i'm still halfway done, havent gotten anywhere after that thanks to many problems in my life/work schedule, so i'm saying F the whole R/d thing and looking into adapting the most awesome csc to ever grace a mid-am car into our setup, gotta make a few calls do, just a bit of machining and call it done and never worry about it again. the thing i'm worried about yet with the zspeed one is it appears to still have the same flimsy style piston in it whereas the one i'm looking at can actually be used to jack up a car wheel if you wanted to. It also promises less thrust bearing stress, and weighs less than .75 of a pound. the company also sells a full race clutch and flywheel set rated for over 500ftlbs. single disc and more for the multidisc(up to 4) that weighs under 20lbs for the whole flywheel, ringgear, clutch, and csc. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

03-06-2011, 09:49 PM	#4 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	actually the design of the bearing contact on the front of the slave cylinder can actually effect the force applied to the thrust bearing as well. due to lever shaped nature of pressure plate fingers the contact patch actually changes in size throughout the stroke of clutch engagement and different designs of bearing face and finger angle can cause side loads imparted to the clutch as you now need to actuate both the clutch itself and over come the these forces as well. the clutch imparts ZERO force on the thrust bearing, all of the axial pressure applied come from the throwout bearing overcoming friction and the spring force of the clutch in order to actuate it. Zspeed has done a good job with there upgraded (what looks to still be a valeo unit) csc as i'm sure it has no more problem with the o-ring in the base as the metal base probably doesn't distort as much as the plastic one did if there even is an o-ring anymore. But it seems to use the same bearing lock ring and plastic piston that the factory unit uses. The company i am looking at makes multi-plate clutches, fly wheels, and hydraulic throwout bearings for many many full on drag cars, Midwest america series cars, formula 100 cars, and several other venues of professional racing, the parts are made entirely in the USA, and they don't carry the crazy upmarket prices you find on japanese parts. the factory CSC was like $260 from nissan, the one i'm looking at is full race forged and cnc machined aircraft grade aluminum and is proven to be damn near indestructible. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

03-07-2011, 10:43 PM	#8 (permalink)
BOLIO 671 A True Z Fanatic Join Date: Mar 2010 Location: GUAHAN Posts: 1,198 Drives: To & From then Back Rep Power: 3401	ZSpeed Slave I recently installed the ZSpeed HD Slave and Southbend DXD Clutch/Flywheel combo... I can tell you and can confirm that there is not one plastic piece in the Zspeed HD Slave...Even my friend that helped me do the install who works for Nissan as a Tech was amazed at the craftsmanship of the product...especially in comparison the stock slave which is a peice of crap... Here are some pics I took of the slave and clutch kit when it was installed... __________________ 2013 Nismo Z34 / FI TT #091 / IG: @lilzilla_z34

03-08-2011, 04:23 AM	#9 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	see i would wan't someone to dismantle the csc so i could verify its sturdiness with my on two eyes. When my ** breaks i skip the whole "upgraded" phase and shoot for the "this mother fer's never gonna break" level. __________________ ANSWER PRICE LIST** Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50 Last edited by 1slow370; 03-08-2011 at 04:23 AM. Reason: censoring so i don'ts gets in trouble

03-10-2011, 03:14 AM	#14 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	so tell me then why does it look EXACTLY like valeo p/n 804534? your wrong Edit: MUhahahahaha __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50 Last edited by 1slow370; 03-10-2011 at 03:21 AM.

03-07-2011, 01:21 AM	#6 (permalink)
NewYorkJon34 A True Z Fanatic Join Date: Jun 2009 Location: Naples, Florida Posts: 3,041 Drives: 09 Fairlady Z Rep Power: 1066	Any updates on the ultimate clutch set-up, and where to buy?

03-07-2011, 02:31 PM	#7 (permalink)
NewYorkJon34 A True Z Fanatic Join Date: Jun 2009 Location: Naples, Florida Posts: 3,041 Drives: 09 Fairlady Z Rep Power: 1066	So what's the best complete clutch + proper csc to buy? I plan on supercharging (450hp-500hp)

03-09-2011, 06:42 AM	#10 (permalink)
NewYorkJon34 A True Z Fanatic Join Date: Jun 2009 Location: Naples, Florida Posts: 3,041 Drives: 09 Fairlady Z Rep Power: 1066	so is the zspeed set-up the way to go? I just want to be able to install a new clutch and not have to worry about the damn csc breaking.

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