Boosted Performance round 2 list

zefaulter

How was driving with a stage 3 Clutch on stock Power? Do you think CMC will fail again since it's OEM?

GaleForce

The clutch is slightly stiffer than OEM. Not unbearable, it feels firm, just right. As a matter of fact, I have the RJM clutch pedal assembly in the 'same as factory' setting still. Right now the CMC is the weak link. It will likely be the first thing I check if I have issues in the future.

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OldBoy

I did mine during my install. I have a Specialty Z 6-puck clutch with Tilton Race CSC, 13lbs flywheel, 31lbs total. It's awesome. The pedal actually felt lighter with the Tilton CSC compared to the the stock one.

Shattering isn't too bad but it is a bit of a PITA in a parking lot. The low weight makes it a bit boggy at very low RPM. You definitely have to engage at a higher RPM than stock (it IS a puck type clutch after all). SRM still works but seems to overshoot and hunt for the right RPM a bit when downshifting. Idle is a bit rough and the car almost sounds like an old muscle car with cams. Higher Idle will easily fix that.

That being said, I love this clutch/flywheel combo.

m3chhawk

Southbend Stage 3 daily with OEM flywheel. Installed well before turbo install to ensure break-in.

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jlo370z

I wont get that break in period, do to the weather here. should i dyno tune on the stock, then swap out to the clutch and do the break in?

my current stock clutch has 10.5k babied miles on it

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❝The Jlo370Z Build❞
523HP | 455 ftb tq | 11.5 PSI | 93 Octane
2017 Porsche 991.2 C4!l

Cell

I would recommend dynoing with the new clutch with it broken in. Should call up project X to see what they recommend for a clutch. If I had to do it again, I would not go with southbend because of the break in period. 1000 miles to break in...

I did the BP kit install myself then brought it to project X to let them look it over. Then had them put in the new clutch and flywheel.

You probably will experience slipping with the stock clutch at 500whp.

jlo370z

pm me what they charged you for the clutch install.

this was my plan as well. install kit, then take it to them for the clutch/tune

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❝The Jlo370Z Build❞
523HP | 455 ftb tq | 11.5 PSI | 93 Octane
2017 Porsche 991.2 C4!l

Joe@ZSpeed

Not all clutches require a 1,000 mile break in, "ANY" full face clutch should be broke in a minimum of 500 miles, This allows the clutch material to flatten out so it will hold all of the TQ it is made to hold.

Puck style clutches can be broke in in as little as 300 miles as they are more abrasive and will seat/flatten out faster.

Kevlar clutches require a 1,000 mile break in because of the material, It is non-abrasive which will take longer to settle in, but on the up side, it doesn't wear the opposing surfaces (flywheel and pressure plate)

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GaleForce

I would install the new clutch and flywheel before the turbo install. Then break it in before dyno tuning the car, using the base tune. It's only 800 miles if I recall. Then giver hell on the dyno

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jlo370z

800 miles, is 3 months for me LOL

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❝The Jlo370Z Build❞
523HP | 455 ftb tq | 11.5 PSI | 93 Octane
2017 Porsche 991.2 C4!l

GaleForce

Yeah it would have been for me too but I had some motivation to do some more driving last summer.

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jlo370z

I have a feeling so will I

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❝The Jlo370Z Build❞
523HP | 455 ftb tq | 11.5 PSI | 93 Octane
2017 Porsche 991.2 C4!l

KaienZ34

I hope someone with a 7AT brings you their car so you can also offer this beautiful kit to the auto guys.

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m3chhawk

I agree with what Gale said on the stage 3 with OEM power. It's more firm but has a much better feel to it. Mine had a little bit of chatter when it was breaking in, but that is gone now.

I also had the same CMC problems. Dealer installed my clutch and ended up covering the replacement CMC under warranty. There is also a service bulletin out for our car that recommends upgrading to GTR brake fluid for the clutch. So if you have a good relationship with your dealer, there's a chance they will cover your fluid and CMC.

To my understanding, the CMC issues arise when bleeding from empty. A few people at Nissan even referred to them as one - time - use.

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zguynate

When Nissan changed out my CSC they reused my CMC. I havent had any problems yet and that was around 10k miles ago. When I change my clutch out for this kit, I will replace the CMC this time though for a little peace of mind.

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2009 370z touring w/sports package