Haha... I use it every once in awhile. I usually put in Rain-X fluid with de-icer for winter time. Man I went nuts looking for it thinking I'd forgotten where it was the first place.

Anyhow, Post #2 updated with dyno video. I'm in the middle of working the before/after video.

what kind of mpg's you guys get boostin'?

Check post #2. I've been logging some scenarios. Going to fill up this weekend for another entry.

[EDIT] Looks like I'm getting at least 20 MPG daily driven with occasional boost. With the fuel gauge fixed, with nearly a quarter of a tank remaining, I've driven over 300 miles. The fill up was under 15 gallons, so I technically have at least 3 gallons remaining. It would be nice to have an ECU flash that corrects the MPG calculation with the new injectors... my car looks like a 400 whp Prius!

Post #2 updated with new video. It's fairly conservative because I didn't have a good spot to test or a volunteer to help me film the action shots.

Next update will be 8 PSI in the near future.

Hey man, did you ever get the clutch issue figured out? if so, do you know what was it?

He flushed the fluids when he saw stuff inside it. There were no air bubbles either. When he looked at the clutch rod, it was adjusted all the way to one side so he readjusted it. Afterwards, he checked the CSC throw and it looks like it's throwing further.

Well the drive is definitely improved, but the engagement point feels a bit lower as well. So hopefully I can take it in and have him raise the engagement point.

I'm still having trouble getting in 1st and R. It takes more muscle from a stop, and the car literally moves! After a few minutes of driving, it gets a bit easier. I'm still able to drive around town with this slight annoyance at stand still. Oddly, the tech says he cannot reproduce this issue.

The last resort is to drop the transmission and ship out the clutch disk.

I have this exact problem. I also have the dxd southbend stage 4, with the heavy duty csc. When I first put it in, my master cylinder failed, so I had it replaced. Since then, I have te same symptoms that you're describing- its very hard to engage into 1st and reverse from a stop. I usually have to put it into another gear before putting it in first. My shop doesn't know what it could be, and I don't want to drop the transmission if I don't have to.

crap, back to square one for clutches.. Have any of you guys contacted Southbend with the description of what's going on?

That's correct. You have to put it in another gear like 3rd, then it clunks in place. It seems to get worse when cold. Other times it's fine, so it's pretty annoying why this issue comes and goes.

Joe@ZSpeed says some clutch disk have too much marcel in them, which is causing the disk to stick to the flywheel. That's why the car lurches or crawls even when the clutch is supposedly fully released.

Best bet is to drop the transmission and RMA the disk. Southbend will fix the disk and ship it back, and they will cover shipping both way. Prob is, I'm going to have to eat up $530 labor charge at the dealer.

The method with least down time requires purchase of a new disk, but of course that'll be ~$200 for the disk and over $500 for labor.

Hmmmm.. I wonder if they'd let me send it back to them and pay the difference for a stronger clutch.. :P
It's rated at 480lbs of torque, correct? I'm at 460 ATM, and have a shortblock on the way, aiming for 600whp, I assume my torque wil be somewhere up towards 500-520, not sure how it will hold up.

Zspeed's website shows stage 4 rated at 600tq 370Z VHR South Bend DXD Clutch Kits for stock CSC

Sick... I think I'm fine with 400whp at 6 PSI, but would love to bump it up to about 8 PSI. This is still 91 octane. I don't think my motor sees more than 4-5 PSI peak on average.

Vinny, even with the gears getting stuck are you able to shift at high RPM? I kept scratching getting into 2nd. It literally won't get in. Not sure about post adjustment, though... even with 1st/R being a bit tough it's fine on a roll.

I have that 1st to 2nd grind at high rpm on the stock setup. Might be the synchros. Or in your case, clutch not disengaging completely when shifting.

It has happened to me before also, but mostly 2-3. 1-2 takes a lot of effort once the shift light starts blinking and you are trying to speed shift...........yeah. Let's just say I was embarrassed a few times :ugh2:

The older HR Stage 4 kits were rated lower as they did not put the additional clamp load on them as the new ones (trying to save stock slaves) Since our HD CSC came out we can put the heavier clamp load back on them without worrying about trashing the stock slave and is the reason the TQ rating is back to 600TQ.

Did you get your clutch from us?

Digi, I will send you a new disk if you like first to keep the downtime less, Just send me back the old one when you get it out.