I know changing to a lighter flywheel will probably reduce engine load so if that is the case will my Lag get worst on 1st gear? 2nd+ gear is a breeze and usually hit full boost between 3.5k to 4K but my first gear is just horrible. I don't get my first lbs of boost until 4.7K rpm

I have the STS kit and no flaming on the Rear-Mount turbo coz this extra lag in 1st gear could be also because I'm running stock exhaust pipes and CAT plus my clutch is toasted. I have to shift all the way to 5.5K RPM to actually hear my BOV below 5K now BOV

 

I had the same thoughts back during my build. This is what i learned. A lighter flywheel is mainly to help rev match during shifting. I think a lighter flywheel will marginally help while out of boost, but its effects are almsot nill when on boost. To answer your question, no you are stuck with lag. If you need faster spools for racing, get a 75 shot. If you need faster spool for everyday spirited driving, get a stroker kit or another turbo kit.

 

One of our STS cars has the RPS clutch and flywheel combo and the difference in performance is quite noticeable.

His clutch was already slipping though before we put the kit on, that could obviously play a role in the noticeable difference.

 

/\ The first few days when I got my car it was fast but after the slipping got worst my car also felt got slower. HHMMM, I know eventually you get used to the power but gees that quick I'll need 1000WHP then by end of the year just to keep my self satisfied


Oh, I just want to make sure that the lighter FW will not make my car worst as it is now

 

Get the RPS 6 puck with the cyn-r-g flywheel. You won't be dissapointed.

 

Ugh on 6-puck clutches. Unless you're a power lifter and like to have one huge leg then I'd suggest getting something more tame like a JWT clutch/fw combo.

If you're going for a built setup you'll eventually want to step up to a carbon disc clutch. Until then, JWT combo is easy to drive and perfect below 500whp.

 

6-pucks are not bad AT ALL. I drive on an ACT 6puck daily and its very easy to drive.

 

That's funny because the one I felt on the Z felt like an assmaster.

I don't even see the point in going with a 6-puck clutch. Unless your power goal is mid 500's on a built motor. In that case, I'd rather have a multi disc carbon clutch for drivability and logevity purposes anyway.

Anything under that, such as a stock motor setup, a more streetable and absoultely stock feeling clutch like the JWT setup would be absolutely fine.

 

I went with the 6puck becuase I wanted 600rwhp. Mine is the sprung hub, so it is probably alittle easier to drive.

 

1st gear will have more lag than later gears because it's so much shorter - especially the Z's transmission that there just isn't enough time for the turbo to spool by 3500-4000 rpms, so instead reaches full spool a little later

with a turbo, this is why 5th gear dynos starting at 2000 rpms always look superior to 4th gear dynos that start at 3000 rpms

 

I wouldn't want to run 600whp on a 6-puck clutch.

I wouldn't want to be running on the ragged edge of a clutch's capability and have issues because I didn't decide to run a carbon clutch from the start. I've seen the RPS 6-puck clutch and cynrg flywheel slip at 475whp. I dont know if the ACT clutch is much better, but I do know that I'd always be concerned about it slipping at 600whp and would rather have a clutch setup that I don't have to worry about.

Therefore, imo, I'd recommend JWT for stock motor setups and Carbonetics twin or triple for built setups.

 

That's what people have told me I know there is not enough load in 1st to really spool the turbo, I just hope having a lighter FW will not make things worst.

Either way I have no choice coz I ordered the Clutch/FW combo and I went with Competition stage 2 and FW. I was going to get the ACT Street and Prolite but one of the Vendor here talked me into trying this new clutch.

 

lighter flywheel will rev you up faster
...yeah it'll make first gear worse, but other gears better

first is going to be worthless anyway either way. Might as well improve the other gears

 

The act 6puck is suppose to be rated for around 700 crank. I dont really care if it goes out, cause new disc are only 100 bucks. It has not slipped once so far.

 

True. It's just some times those SRT can be annoying and I sound like a big fart coz I have no Muffler and No BOV at 1st gear if I don't shift to redline Anyways I'll just try to open up the exhaust next time and have Julian retune my car.

 

oh those pesky SRT's, can't have them thinking we're not boosted

 

I wouldn't trust a single disc clutch on a 600rwhp 350Z for very long. Trust me...if I could have stuck with a single...I definitely would have, but I couldn't find anyone that would guarantee their clutch would hold my power goals.

 

I love the Z after my JWT flywheel/clutch combo. It revs like a honda now. Not a big mopey V6. Defaintly 100% over stock.

 

hey daniel i am getting a JWT combo installed andI will let you know the difference between that versus what i had.....i had a stock flywheel and fidanza 4.3 clutch6 puck....it was a little annoyin to drive but it grabbed like a ***** ****a