JWT vs Southbend Clutch/flywheel set-up

12nismo

Hey guys, I'm going to be replacing my CSC with the Zspeed HD CSC and am looking to also replace my clutch/flywheel while the transmission is open. I've looked around the forums on this site as well as a few others and have narrowed my choices down to either the Southbend stage 2 daily kit with either the 19lb Steel flywheel or the 14.5lb aluminum flywheel (I'm leaning towards going with the aluminum one) OR the JWT HD clutch/flywheel (15.4lb flywheel). I have full bolt-ons with 4.08 gears and am looking for the best performance (acceleration) and reliability. I dont really track the car, but i want whichever set-up I go with to be able to handle a track day if I decide to do one. Any experience/advice would be GREATLY appreciated!

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nismo Z34 12 0209
JTran Motorsports//Stillen//Fast Intentions//EcuTek//Z1 Motorsports//Eibach//BRIDE //Zspeed//Carbon Signal//Houston Halos//Southbend//Whiteline//TWM//NonStopTuning//Doran Racing

Chuck33079

An aluminum flywheel will make a lot more noise than a steel one. Both will make a lot of noise, but the aluminum will be worse. If that's a concern at all, go with the steel one.

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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

12nismo

The noise is not a concern for me, just reliability.

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nismo Z34 12 0209
JTran Motorsports//Stillen//Fast Intentions//EcuTek//Z1 Motorsports//Eibach//BRIDE //Zspeed//Carbon Signal//Houston Halos//Southbend//Whiteline//TWM//NonStopTuning//Doran Racing

7speed

Maybe also look into southbend steel flywheel. It's 23lbs and maybe better for street use since not as light as the others. Videos I seen also show it's not as noisy.

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09 370z 6spd traded 1/12/15 for 15 Challenger RT 6spd

Chuck33079

I can't see reliability being any different between the two aluminum flywheels.

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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

12nismo

I'm mainly looking to see if there are any issues with tracking an aluminum flywheel as well as advice on which kit is better between the Southbend and JWT

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nismo Z34 12 0209
JTran Motorsports//Stillen//Fast Intentions//EcuTek//Z1 Motorsports//Eibach//BRIDE //Zspeed//Carbon Signal//Houston Halos//Southbend//Whiteline//TWM//NonStopTuning//Doran Racing

Joepro

I have the ss southbend kit and aluminum flywheel for about 10k drives great and feels fantastic. Got it all from joe at zspeed he has great service!

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Swift|Koni|SPC| FI CBE|Z1|Stillen|Sbend|Zspeed|R/T Tuned|523 whp|458 tq|10.5 psi|SOLD
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12nismo

What stage southbend do you have? I'm looking at the stage 2 daily. Also, how does the aluminum flywheel feel? Noticeably better acceleration? Any loss in torque feel?

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nismo Z34 12 0209
JTran Motorsports//Stillen//Fast Intentions//EcuTek//Z1 Motorsports//Eibach//BRIDE //Zspeed//Carbon Signal//Houston Halos//Southbend//Whiteline//TWM//NonStopTuning//Doran Racing

Joepro

South Bend Clutch SS Street Kit with Aluminum Flywheel Pre-Order

Revs ridcoulously faster, if you notice anything, its not much at all, the benefits far out weigh the cons, they also have a slient disk that helps with the noise, but it is really not that bad, if you have an exhust you can not really hear it much. It is also worth a call to Joe at zspeed, if you tell him what you are doing with your car he will suggest the right clutch for you.

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Swift|Koni|SPC| FI CBE|Z1|Stillen|Sbend|Zspeed|R/T Tuned|523 whp|458 tq|10.5 psi|SOLD
Joepro's Journal|Joepro's Boosted Performance Build |Pittsburgh-Western-Pa-Ohio-Wv-Group

fairlady_z34

use to have a jwt aluminum flywheel. diff. feel faster acceleration. drove for a couple of thousand miles on it but was way to noisy for me so i ended up selling the flywheel, will be trying out the south bend flywheel next(19lb). when inside the car while idling wont notice it too much if you have music on, but if you are on the outside sounds like throw out bearing took a dump

luigi90210

as a JWT owner, i have to say its the best clutch i have ever driven, easy to drive, no slip, and much better than the stock clutch imo

the flywheel does rattle real bad at times but i usually dont notice it unless i have AC on and no radio playing, i like the weird looks i get from it though, like the what is wrong with your car that makes it sounds like a diesel truck(not exaggerating there either)

since you're dropping the tranny id suggest looking into a short shifter as well

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SOLD 370z
New Car:classified
DD:2011 Mini Cooper S stock

MacLean

Bryan what is going on big guy. Thi sis C4...lol I have to say JW FTW...... JTran will tell you the same thing.

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l Meisterschaft Full Cat-Back Exhaust l F. I. Resonated High Flow Cats l Stillen Gen 3 l M370 Intake Manifold l UpRev l JWT Clutch & Flywheel l ZSpeed HD CSC l Stillen 19 Row Oil Cooler l ZSpeed Powercoated Under Tray l GTSpec: 6, 4, 2 Point Brace l

12nismo

Whats up man! So you are really happy with it? Noticeably better acceleration/faster rev? How bad is the extra noise?

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nismo Z34 12 0209
JTran Motorsports//Stillen//Fast Intentions//EcuTek//Z1 Motorsports//Eibach//BRIDE //Zspeed//Carbon Signal//Houston Halos//Southbend//Whiteline//TWM//NonStopTuning//Doran Racing

MacLean

Not too much big guy. No complaints about it. Acceleration/rev seems faster, but I also had the F. I. RHFC's & Stillen Gen 3 put on at the same time. I had to break the clutch in for 500 miles and keep the reviving from one gear to the next under 3k (a little hard to do). OH you will definitely notice the noise, but it’s not OMG WTF is this. It is not terrible sounding, but you will get use to it too. You have to remember that you installed a HD aftermarket clutch & flywheel.

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l Meisterschaft Full Cat-Back Exhaust l F. I. Resonated High Flow Cats l Stillen Gen 3 l M370 Intake Manifold l UpRev l JWT Clutch & Flywheel l ZSpeed HD CSC l Stillen 19 Row Oil Cooler l ZSpeed Powercoated Under Tray l GTSpec: 6, 4, 2 Point Brace l

EVOHUNTER

I'm still trying to decide which setup I want. im still running my factory clutch with 433whp..hahah. surprisingly its still holding up. I think I might for the JWT setup, but I really want to SZ setup but 1575.00$ is a lot.

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