the need for a lightweight flywheel ..hmm.

[zaquanh]

what do you guys think , is there really a need for one

mainly because of money and time i need a clutch,

im tryna get to this

http://fabricatedmotorsports.com/images/feb09flyer.jpg

anyways , i can get my flywheel resurfaced or get another stock one and get it done , i dont want to get a new clutch than have to re do the clutch later because of more power or sumthin

mabye i dont under stand the light weight flywheel vs. stock flywheel idk , help me out

[Psycho 240 Freak]

Lightweight Flywheel basic explanation
Good: Enables engine to rev up faster
Bad: RPM's drop faster between shifts

[dori_sil8t]

id say get the stock resurfaced. spend the money on a good clutch.

[fliprayzin240sx]

SR or KAs??? If its a KA, i'd fucking go for lighter flywheel. Nothing livens up the KA more than a lighter flyweehl and underdrive pulley.

[KA240SX808]

+1 LW FW on KA's feel nice...

Though I didnt like the 11lbs Fidanza as much as the SPEC 15lbs, I thought the SPEC Billet was more balanced...

[Monooxide]

+1 LW FW on KA's feel nice...

Though I didnt like the 11lbs Fidanza as much as the SPEC 15lbs, I thought the SPEC Billet was more balanced...

More balanced? Implying that the fidanza isn't? If this was true your bearings would have ate themselves and you would have had an awesome drivetrain shudder.

Lightweight flywheel will give you a little more torque and horsepower.

Also will make the engine more responsive. I say while you're down there, might as well replace it, should make heel toe easier as well.

[zaquanh]

Sorry its all for a sr20

[ManoNegra]

Lightweight flywheel will give you a little more torque and horsepower.


I'd like to see the physics behind that.


Inertia, plain and simple
lighter rotational mass will get moving and slow down faster
great when you're accelerating
horrible when you're stop-and-going on the 405 'round 5pm.

[ayuaddict]

i got one.

with solid motor mounts i loved it.

then my motor blew.

from other reasons.

but it was great.

makes me wanna get an aluminum driveshaft and stuff.

funner car and non state reffable yeaaaaaaaaaaaaaa

[Om1kron]

stock engine... id stick with the regular flywheel... get some head work done and rebuild the bottom end, throw on a lightened flywheel and suddenly you wont feel like a bag of tools for spending 1400 on that machine work lol.

[zaquanh]

hmm good info , i guess if i get a bad ass deal on a light weight ill pick up for it but if not , resurfaced flywheel will work

[OptionZero]

totally

i got a fidanza when i replaced the clutch
they send you new surfaces so u dont have to resurface

added the Syko engine mounts

changed the tone of the engine
made rev matching fun

i too want a lighter drive shaft just for the heck of it

but yeah like ayuaddict my engine will probably blow up eventually cuz its so old

[Monooxide]

I'd like to see the physics behind that.


Inertia, plain and simple
lighter rotational mass will get moving and slow down faster
great when you're accelerating
horrible when you're stop-and-going on the 405 'round 5pm.

You would like to see the phsyics? Im going to assume the latter part has nothing to do with torque or horsepower as far as final numbers go.

The best way and easiest way to describe it for EVERYONE to understand is that you are decreasing the weight having be rotated, therefore less work, because of the lighter flywheel. Therefore your consecutive combustions have to do less work to rotate the flyhweel, trans gears, d-shaft and so on.

It's the same principal as the drivetrain loss that you all are so very familiar with. You automatically take that 15% tax and take it away from the crank horsepower because nothing is 100% efficient.

I know you're going to ask so I will answer in a more "Physics" oriented answer lets say that a combustion force on one piston in the downward direction is 2000N(Newtons, and its way more than that for sure). Well it takes a certain mechanical force to turn a certain amount of weight right? Well now that there is less of it, you're able to translate more of those Newtons.

You're basically increasing the the Mechanical Efficiency of the engine, it requires less torque to turn, therefore you get more torque. If you gain torque, YOU MUST gain horsepower. They go hand in hand. More torque = more horsepower.

[zaquanh]

i was told that you cant resurface a fidanza flywheel you have to get new friction plates , is that true?

are they expensive?

[Monooxide]

i was told that you cant resurface a fidanza flywheel you have to get new friction plates , is that true?

are they expensive?

I don't know the price but yes, that is true. You shouldn't have to resurface it most likely ever for most users.

[SpdElemts]

I have a Toda chomoly flywheel on my Sr and i love it.

[xs240]

I got an xtd stage 3 clutch kit and their 11lbs chromoly flywheel, solid engine and tranny mounts, driveshaftshop aluminum 1piece driveshaft.. plus BRM's exhaust setup. All this put together made the KA an animal. It's worth it if you're sticking KA.. it is loud and vibrates but who cares :D My woman don't like it no more :D Guys on the other hand, who got the chance to ride in my car made a big grin on their faces however :D

[Monooxide]

I got an xtd stage 3 clutch kit and their 11lbs chromoly flywheel, solid engine and tranny mounts, driveshaftshop aluminum 1piece driveshaft.. plus BRM's exhaust setup. All this put together made the KA an animal. It's worth it if you're sticking KA.. it is loud and vibrates but who cares :D My woman don't like it no more :D Guys on the other hand, who got the chance to ride in my car made a big grin on their faces however :D

So, you're stoked for all the guy attention?

[zaquanh]

lol hhahahah

[xs240]

No I am confident in my sexuality, what a silly and immature thing to question. I have a woman and don't need to prove myself to other women that I have a big 8" cock because I have a built car; unlike insecure teeny boppers and kids in 240s who think their dick is as big as their car. Plus gold diggers are whores. Only retards would go for such women. Forgive my directness.

I wish you well in your future self-esteem and inner security endeavours.

Maybe you need one of those penis enlarger pills instead of a 240 which clearly is too expensive for you to work on.

[murda-c]

Maybe you need one of those penis enlarger pills instead of a 240 which clearly is too expensive for you to work on.

Says the guy with the XTD clutch.

I'm not one to be all name brand this and that, but xtd is just shitty.

also way to fail at taking the joke you obviously set yourself up for.

[Monooxide]

No I am confident in my sexuality, what a silly and immature thing to question. I have a woman and don't need to prove myself to other women that I have a big 8" cock because I have a built car; unlike insecure teeny boppers and kids in 240s who think their dick is as big as their car. Plus gold diggers are whores. Only retards would go for such women. Forgive my directness.

I wish you well in your future self-esteem and inner security endeavours.

Maybe you need one of those penis enlarger pills instead of a 240 which clearly is too expensive for you to work on.


Whoa whoa whoa...guilty conscience? I didn't say anything about your sexuality. Also, generally guys who talk about their 'size' generally have said problem...

I didn't mean to bring up a sensitive subject.

Yep, I couldn't imagine spending money on like a Standalone...or Tilton clutch...or Defi...shit is trash.

[KA240SX808]

More balanced? Implying that the fidanza isn't? If this was true your bearings would have ate themselves and you would have had an awesome drivetrain shudder.

Lightweight flywheel will give you a little more torque and horsepower.

Also will make the engine more responsive. I say while you're down there, might as well replace it, should make heel toe easier as well.

balanced as far as RPM Drop between shifts, Launching, and Engine response... I felt the Findanza dropped more RPMS then I liked...

[zaquanh]

i think for price i may just get a clutch and oem flywheel :(

[xs240]

Says the guy with the XTD clutch.

I'm not one to be all name brand this and that, but xtd is just shitty.

also way to fail at taking the joke you obviously set yourself up for.

Says the guy with a signature of being squirted in the face by questionable milky liquid droplets.

Nothing wrong with the xtd, it's a hit or miss. Sure it's made in china but half of our shit is, it's not high quality but it does the job for a great price. I'd go with an exedy next time. I don't intend to stay KA long-term as I'm going V8 but it does it's job just fine for road racing and daily enthusiastic fun.

[xs240]

i think for price i may just get a clutch and oem flywheel :(

Honestly you need to think about your goals. If you want better than OEM/OEM, go with an exedy you won't be dissapointed.

[Monooxide]

balanced as far as RPM Drop between shifts, Launching, and Engine response... I felt the Findanza dropped more RPMS then I liked...

Yea, Im not saying the Fidanza is good or bad or anything in comparison to others because the only thing I have experienced is Fidanza, ive never even felt stock. : /. Which I regret.

I'm going even lighter now, so we'll see how that goes.

[ManoNegra]

You're basically increasing the the Mechanical Efficiency of the engine, it requires less torque to turn, therefore you get more torque. If you gain torque, YOU MUST gain horsepower. They go hand in hand. More torque = more horsepower.

You're NOT gaining torque and power.
You're making better use of what you ALREADY have.
stop blabbering pseudo science.

[Monooxide]

You're NOT gaining torque and power.
You're making better use of what you ALREADY have.
stop blabbering pseudo science.

I've seen this personally. Proved on a dyno time and time again.

You're decreasing your drivetrain loss.

[zaquanh]

Honestly you need to think about your goals. If you want better than OEM/OEM, go with an exedy you won't be dissapointed.

oh i know ive had an exedy stage 2 before , but i wanted a lightweight flywheel to go with it this time but i think i may wait it out , so i can make this event

[KA240SX808]

I've seen this personally. Proved on a dyno time and time again.

You're decreasing your drivetrain loss.

I think thats what he's trying to say, you have it, your just losing it through the weight. Which you Gain hp, but then again you dont, your kind of just releasing what was to be had from the beginning...

[aNskY]

you gain RWHP, which is what MATTERS. of course you wont gain engine hp

[INeedNewTires]

i have had a stock clutch on my SR for over a year, just switched to an ACT xtreme light weight one, and i like it. Its nice, but dont expect some big HP or tq gain, if your in tune with your car you can tell, but its not a huge difference. the biggest difference is on engine response and between shifts, you have to learn how to keep the rpms up if you shift slow, if you shift fast its better than OEM IMO.

[ericcastro]

I drift a SOHC and refuse to do any lightening of the flywheel.
When drifting on track, you only usually are shifting a couple times. But you clutch kick ALOT.
I want the normal flywheel so that I can keep all that heavy inertia working for me in shocking the driveline.

if I auto crossed more or dragged, i would want the faster rev and shifts of the lightened flywheel.
Just my 2 cents

[ZX88]

i have a fidanza 11lbs flywheel and aluminum drive shaft i think at its like 9 or 10lbs you definitely feel a nice increase in response and once you get use to the rpm drop between shifts its not bad at all. i would recommend it. im sr btw.