Why did I had to ask about the CSC?? I think I jinx it
My clutch oil now is all over the floor and there is on pressure in the pedal!! it moves freely and the car at the dealer.(I just changed the slave cylinder last week)

 

WTF?
http://www.outperformanceshop.com/pr...000s-vqhra.htm
http://www.outperformanceshop.com/pr...2310-vqhra.htm

?????? is this legit??????
anybody knows anything about it?

 

Looks legit

 

funny it has the same 1200 kg load as the jwt clutch, and someone had a jwt one fail on them...

if i need a new clutch anytime soon, imma be getting the exedy one since it has the lowest known clamping load other than stock...

 

All the looks/specs are too similar to the JWT for me.

 

yep! and different from the "DE" nismo where the pressure plate was for 1030kg

 

seriously? may hold!!!

 

someone from Z1:

i just saw the post on your blog ( http://cornerbalance.wordpress.com/2...r-clutch-kits/ ) on the clutch that ACT released. it says clamping load is 52%. does that mean its 52% higher that stock? so 800 + 52% = 1216?

 

I have no idea what stock is, so I can't answer that, sorry

 

i got 800 from this article:

http://www.370z.com/MagazineArticles...-Flywheel.aspx

i'm assuming the its the same with the hr and the vhr, but we all know where assuming gets us...

 

that link doesn't work - I've also seen the VQ37 (370Z) as rated at 880 kg - but I have no idea which is correct, or if any of the published info is accurate

 

iguess they could have it wrong...

if you wanna see the article, go to www. 3 7 0 z .com, click on the magazine tab, then click on the pic of the 2 flywheels

 

I thought I would keep adding info to this thread since it's here...

I was curious about Exedy's clamping force so I contacted them and found the Stage 1 clamping force to be 2300 lb, or about 1043 kg, similar to what was mentioned earlier. I'm only guessing the stock clamping load is about 880kg (DE motor). Assuming that, Exedy doesn't add that much more clamp force in comparison to JWT. In the end, it may be worth the try. But I haven't seen anyone else on here with Exedy on their HR.

Evan from Exedy writes:

"I have seen several complaints with the CSC. If every case I have seen it is because they are using a earlier style pressure plate from the 03-06. The JWT is no exception as it too is a modified 03-06 pressure plate.

There is more to a performance clutch than clamp load. You have to take into consideration the friction coefficient of the disc material and the dampening hub. Most companies use modified OEM versions. We manufacture every unit from scratch and take all aspects of the clutch into consideration for proper function and feel.


Sincerely, Evan Cline
Technical Coordinator-Aftermarket
www.exedyusa.com
800-346-6091 ex633
734-397-6633 direct"

I would also imagine OSG manufactures their own clutch unit from scratch? Yet, midz350 broke his with OSG. Then again, his power levels could've had some play into it breaking. Dunno. Damn..so many factors to consider. The kit Z1 is preparing to put out to fix the CSC sounds promising. Anyways, just throwing this info out there.

 

I was only running the Greddy Turbo Ti-C catback When mine broke, and even if the Exedy clutch wont break the CSC I still recommend going with the 03-06 release mechanism since you will have firm pedal and wont fail on you and stick to the floor when you drive the car the way it meant to be. my

 

+1. Power levels have nothing to do with the csc failing. I'm def. gonna do the 03-06 setup when (don't want to f*ck myself but it's bound to happen lol) my csc gives out from my jwt clutch.

 

Well I have About 1000 miles on the clutch now, engagement has become smoother. It is still trickier to drive than stock, this clutch has plenty of grip to handle high hp levels so slipping it not much of an option. Probably a little less pedal movement between disengage and engage compared to stock. The bad thing I have to deal with is backing up, I have a cusco dif. and there is play when it wants to lock up and unlock, its just not smooth at all. It is just a shame not to be able to see such a nice piece of equipment.

 

here is a pic of the clutch

 

Agreed.....Mine was almost too pretty to put in.

[IMG]<a href="http://s726.photobucket.com/albums/ww267/03threefiftyz/?action=view&current=IMG_0237.jpg" target="_blank"><img src="http://i726.photobucket.com/albums/ww267/03threefiftyz/th_IMG_0237.jpg" border="0" alt="Photobucket" ></a>[/IMG]

 

^^ +100000

 

Some useful info.


Clamp load and pedal pressure are not as "Linked" as you may think.
What matters is the bearing load of the pressure plate, This is what correlates how much force it takes to press the TOB bearing and release the clutch. You can have 2,000lbs of clamp load on one pressure plate and 2500lbs on another pressure plate yet have the same bearing load.
It is all in how the pressure plate is designed and/or modified and also the style of the pressure plate. Southbend has been building clutches for 40+ years and know many tricks on keeping bearing load low (easy pedal effort) yet still maintain a higher plate load to the clutch disk.

It is not a good idea to use the older 03-06 clutches in stock form in the 07-08. There is a height difference in the clutch set-up and if not rectified somehow can cause the CSC to overextend and is probably what is causing them to die early on the HR cars with the older style clutch cover in them, Understanding that the 07 HR was recalled and the CSC will go bad if not replaced under the recall regardless.

Southbend DXD clutch has addressed the clutch height difference in their kits so this is not an issue.

Southbend also has a light bearing load in there clutch kits so putting too much pressure on the CSC is a thing of the past.

The Stock HR "self adjusting" pressure plate is not a good design. It has been used in the past on other cars. It cannot be modified well either.
Basically this pressure plate adjusts as the clutch wares keeping the clamp load the same throughout the clutches life. Unfortunately it usually breaks before the clutch is worn out. The earlier 03-06 pressure plate is a very good design, Can hold massive power when modified and is very durable.

On Southbends stage 1-3 kits we use a light bearing load on the clutch kits and get the TQ holding ability from using higher grade, more expensive clutch linings like Kevlar and Feramic. Feramic clutch material will hold twice the TQ as a stock organic lining and ware 5 times longer yet still drive smooth on the street. Good stuff!

I think what everyone needs to realize is that the majority of the problematic CSC's have been 07's that had a recall and were never repaired or people that changed their clutch and just left the old CSC in there. These should be replaced whenever you change your HR clutch.