Picking up a Bully stage 4 clutch today, Flywheel options?

[Nicksemianiw]

I want to get a lightened flywheel for my car while I am doing my clutch, smart to do them at the same time. So anyways the company im getting my clutch from puts them togeather and they said that a Fidanza SR flywheel wont even fit with my clutch. He lighned them up and apparently the clutch pressure plate is 8.8mm or something and the SR fly wheel is 10.5 mm or something. But then on the other note I herd you can use a SR flywheel with a CA clutch system as long as you change the starter to the sentra or NX one. So what will work and what wont?

[ca18detgabby]

use the search button. this has been covered

[float_6969]

zer...94110

[sjbsuperman1425]

use an SR20 flywheel and clutch. It's probably what i'll do in the future.

http://www.driftopia.com/2007/...18det/

[articzap]

use an SR20 flywheel and clutch. It's probably what i'll do in the future.

http://www.driftopia.com/2007/...18det/

Woahh wait a minute. The CA18DET is an externally balanced motor and is balanced by the flywheel. The SR20DET is an internally balanced motor with a perfectly balanced flywheel.

You can't interchange and not have some serious issues could you?

[Nicksemianiw]

I'm tracking down a JUN CA18DET flywheel and if that fails im getting myne custom built for like 700$ lol..........

[MeanGreenS13]

just stay with your stock one. if it aint broke, dont fix it. if you have ever seen what i have... you would never want an aluminum flywheel... one ****up, and it shatters... it will cut your feet off at the ankles... or at the least, severly injur you.... it will go right through both the bellhousing AND floorboards... ive seen it happen many times in cars only turning 6500rpm...

[articzap]

Not to mention in a boosted car you want a heavier flywheel to keep up momentum of the engine between shifts. It will help build boost faster.

[MeanGreenS13]

true true forgot about that point. lighter flywheel will allow your engine to bog/stall easier from a dead stop. Wont take as much to stop the engine rotation

[sjbsuperman1425]

heavy flywheel = less acceleration = harder to build boostlight flywheel = easier to turn = easier to build boost.

yea it probably is easier to stall but a little practice and you'll be fine.

MeanGreen, just a quick question, if Aluminum flywheels were that unsafe, dont you think they would stop making them? just a thought. sounds like "user error" to me.
Modified by sjbsuperman1425 at 9:13 PM 11/2/2008

[articzap]

Did you really just say its harder to build boost with a heavy flywheel????

Please go read up on flywheels and boost.

[wynnEZ]

Lucky me a Jun flywheel came with my car! Might be up for sale soon if I get this Giken clutch though.

[sjbsuperman1425]

Did you really just say its harder to build boost with a heavy flywheel????

Please go read up on flywheels and boost.

think about it, honestly. More rotational mass, harder the engine has to work. Less rotational mass, the easier it is, making quicker acceleration, equaling easier to build boost, pretty much the whole reason i thought people would buy these things, isn't it? I didn't think it was that hard of a concept lol. what you are talking about is the drop off BETWEEN shifts, since it wont hold the inertia. so in a way we are both right, just in a difference sense. because the lightweight flywheel may not hold the inertia as well, but you will still be accelerating better and should make up for that with the little that you do lose.

and not to bash you or your knowledge "articzap" but what you said seems to be one of those things that ppl would say when they read something, hence the "Go read up on flywheels and boost" comment, not actually figuring it out. and i am in NO way judging you or your intellect, its just what it sounds like. No disrespect intended!

[MeanGreenS13]

SJB... are you truely THAT DENSE? just because you have a lighter flywheel doesnt mean your gonna make boost sooner or easier!

all this means is your engine will rev faster. freeing up a few extra horsepower through rotational mass

[MeanGreenS13]

just read your other comment. Would you like to fly to florida and speak with some of the drag racers around here? Aluminum flywheels can be good. But if something happens. anything that would cause stress or warping. YOUR DONE. that ***** will fly apart faster than you can blink. Ive seen it happen all over. we even had a kid locally and hes on the SRT4 forums... he put a fidanza flywheel in his car and it and the clutch FLEW apart when he over revved the engine.

[articzap]

Turbos build boost based on the load that is on the engine. With a lightened flywheel, boost will actually come on later in the power band because there is less load on the engine. Lightened flywheels are more for N/A cars. A lightened flywheel free up some HP in the top end, but for our cars, stock is what you want.

[sjbsuperman1425]

just read your other comment. Would you like to fly to florida and speak with some of the drag racers around here? Aluminum flywheels can be good. But if something happens. anything that would cause stress or warping. YOUR DONE. that ***** will fly apart faster than you can blink. Ive seen it happen all over. we even had a kid locally and hes on the SRT4 forums... he put a fidanza flywheel in his car and it and the clutch FLEW apart when he over revved the engine.

now im actually curious. was it the clutch or the flywheel? and i think the Fidanza flywheel is like 9lbs or something isn't it? You think the Tomei, which i think is like 11lbs, be any better or worse?

meangreen i got you on your other comment, but "articzap" i think your last post needs to be explained a little. Turbo's build boost based on exhaust heat and flow. what you are saying is you just want LOAD on the engine to make boost. People take out the A/C and dont tow cars/trailors to help free the engine from load.

[float_6969]

Artzicap, do you have some information that you're referencing, or is this from personal experience?

One of my favorite engine modifications was my lightweight flywheel.

You don't build boost based on load, but air mass/volume. The more quickly you can get to the engine revolutions that produce enough air volume to spool the turbo, the quicker you make boost.

Now it's true that a heavily loaded turbo motor will make boost at a lower RPM, but that doesn't mean that you build boost faster.

For example, if you have a 40lb clutch/flywheel, and I have a 20lb clutch flywheel, and we both accelerate in 1st gear from a 10mph roll, it may take you 3 seconds to get to 2500 rpm where you start to build boost, but it may only take me 2 seconds to get to 3000 rpm where I build boost.

Also remember that once you get into higher gears (3rd, 4th, and 5th), the load on the motor is high enough that the effects of the flywheel are negated.

[r34 gtr]

JUN flywheel: http://perfectrun.com.au/perfo...l.htm

CUSCO flywheel: http://perfectrun.com.au/perfo...l.htm

Just scroll down until you hit the one for the CA18DET. I think they are both about $340.

By the way, tracking one down? this took me 1 second to find, while taking a poop. Yeah, they actually have them too.

[sjbsuperman1425]

JUN flywheel: http://perfectrun.com.au/perfo...l.htm

CUSCO flywheel: http://perfectrun.com.au/perfo...l.htm

Just scroll down until you hit the one for the CA18DET. I think they are both about $340.

By the way, tracking one down? this took me 1 second to find, while taking a poop. Yeah, they actually have them too.

man r34gtr, you are a very good multi tasker lol. i can't even poop and pee at the same time and you can find badass CA parts. Kudos +10!! lol

[MeanGreenS13]

i would never go with aftermarket flywheel unless it was still steel. aluminum is too soft and prone to breaking. Ive never heard of a steel flywheel flying apart

[sjbsuperman1425]

i would never go with aftermarket flywheel unless it was still steel. aluminum is too soft and prone to breaking. Ive never heard of a steel flywheel flying apart

the Cusco and JUN flywheels are Steel.

[r34 gtr]

the Cusco and JUN flywheels are Steel.

Yeah man, this is quality stuff, none of that FAILdanza aluminum crap. Do I ever lead you astray with after market CA18 parts? Wait, yeah, I probably do, but not this time!!

[MeanGreenS13]

i would only ever ever EVER use steel flywheel or flexplate

[sjbsuperman1425]

OOOPS

[sjbsuperman1425]

i would only ever ever EVER use steel flywheel or flexplate

i think we got it MeanGreen, you only EVER use steel, and there they are