Does a lightweight flywheel make your G37s faster?
 

If anyone has replaced their stock flywheel with a lightweight flywheel, can you please give me some feedback on the mod. Do you think it made your car faster, shift better, or just slows your car down easier during downshifts. I am thinking about putting a performance clutch and lightweight flywheel on my g37s and would love some feedback about this mod from people who have already done it on a G35, G37, or 350Z. Thanks :driving:

Check with VIP G he has one

i dunno about shifting... cause i think you have to rev match a lil more but the car revs alot faster hence you goin through the rpms quicker...

yes it will make ur car FEEL faster, bc you can go thru ur gears a lot quicker...imagine taking 15lbs off the rotating assembly??? big difference..


love my clutch, wish i had my flywheel installed as well...ya know i also have a stillen lightweight flywheel for sale ? =0)

^What he said. A lightweight flywheel is definitely worth the money.

yep got both light flywheel and stage 2 clutch, car revs alot faster and is able to put the power to the wheels better. Was told easy 5-6 whp gain.

Does it theoretically make your car faster? Hell yes.

Does it ACTUALLY make your car fater? not enough to be noticeable.

The only reason to get a light flywheel is for throttle response (allows for more agressive downshifts). I do not recommend it unless you are SURE this is what you want; daily driveability and noise levels will suffer.


To the above poster: I call BS on the whp gain. I've yet to see a dyno proven gain from a lightweight flywheel. Any "gains" all fall within the margin of error on the dyno.


This coming from the guy who daily drives with a 8 lb flywheel ;)

I drive with a 1lb CF flywheel :hello:

Mine is made of helium and actually has negative weight :BOUNCE:

UM... Ill Call BS... No one makes a lighter Flywheel that my 1lb-er:thewave:

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A dyno wont show the gains of a lightweight flywheel. The track will. Same sort of gain as a short throw shifter (G already has one) or changing your gears. Measuring of hp does not determine the performance of your vehicle, just your engine.

clutch/flywheel combo does show whp gain

Dyno proof? Unless you're running an extremely light flywheel and clutch disk combo, you're not reducing rotating mass enough to really show a difference. Anything that WILL show up as less drivetrain loss will more than likely hurt street driveability...

u people are funny...i been using a secret celery made flywheel...HAAAA its got negative calories so my rotating mass will keep dropping weight!!! POSERS!!

newbs...

a flywheel will not increase your hp....it will incrase your acceleration due to a lighter rotating mass...but ur engine still produces the same power...

does changing your wheels increase your hp? it doesn't! your car feels like it's accelerating faster because you have lighter rims...same idea with the flywheel...

for the even newer newbs...no, the clutch will not increase hp either, same goes with nismo stickers...

the car will feel a lot quicker during acceleration, which is a good thing, but the car is now 10x harder to drive. You'll need to rev the rpm's higher to launch, and you'll need to shift a lot quicker....

i changed my flywheel/clutch on my old car...after 3 months, i swapped back to oem...

think about rush hour traffic....

To clarify.

Light Flywheel/clutch/rims/tires/brakes do not increase engine output.

They do, technically, increase horsepower put to the ground (more technically, they decrease drivetrain loss).

exactly my point, they increase whp because it allows the engine to put more power to the ground

^You guys explain it way better than I do.

But realistically speaking, you won't see any gains from the combo... and you're probably hurting driveability.

The impact of wheels/tires is FAR greater than the impact of a flywheel clutch.

Losing 10 lbs of unspring weight on a ring, vs losing 10 lbs unsprung weight on a disk.

Remember, the diameter of the tires (ring) is far greater than a flywheel and clutch (disk), and that a ring has more inertia than a disk.

I don't remember the equations to calculate... but I do believe it is an exponential equation.

the whp which is increased by reducing the weight of the flywheel is not by much....but you do feel the car accelerate a lot faster...

at the end of the day, really consider if you wanna change your flywheel...cause it's a bitch to drive especially if it's your daily driver

so you're saying that a 2whp gain makes the car feel like it is accelerating a lot faster?

It will definately rev faster (and drop the revs faster too), but IMO, an intake would have a much more noticeable effect, and the intakes arn't proven to provide much if any gain...

I totally agree on reconsidering the flywheel, as you will hurt your daily driveability, and it isn't cheap to go back once you do it.

doesn't hurt driveability at all, I love the feel much better than stock, clutch catches lower and shifter doesn't vibrate as much

This is why I am glad Sharif told me about this site. You guys have been a lot of help. I am still on the fence about the mod, but I now have a greater understanding of the mod and what it really does and does not do. The car cost me so much, I need to get as many daily driven miles out of it as possible. I want to build a track car and keep my g37s as my #1. I think with everything you people have said, I am going to wait and just do the lightweight flywheel and performance clutch on the track car.:driving:

a clutch and flywheel isn't for the mild enthusiast...u have to be a hardcore car enthusiast to go with a mod like that...everyone's driving styles are different as well...

the only way to really describe it when i did it to my civic...it felt like i took off 100 pounds off the car...it was just peppier...but like u said, the daily driveability was out the window...

going from 85whp to 90whp is a much more significant gain than going from 270whp to 272whp :eek:

Pullys on the Civic make a rather signficant difference as well, whereas on the G's, pully's make no measurable difference :biggthumpup:

On the flip side, once you make the adjustment, a lightweight flywheel will be driveable. I think of mine as a sort of anti-theft feature... everyone stalls my car between the heavier pedal, 8 lb flywheel, and stickier clutch disk :D

The major difference is unless I'm shifting rather quickly, I actually have to keep my foot on the gas to keep the revs up.

If at all possible, find someone with your potential future setup and drive their car before committing. There WILL be additional noise (sometimes significantly more noise) with an aftermarket setup.

For the record, I never stalled your car when i drove it :thewave: So that means I can steal it...

good luck driving uphill with a light clutch & flywheel.. expect to stall with every gearshift lol IMO unless you're going to track your car these should be last on your mod list

i did own a civic before...(actually, an acura EL), and i had the lightweight flywheel, and also had the pulley set...and honestly, i couldn't feel a damn difference with the pulley....the only thing that really gave me more hp was the v-afc after hours of dyno tuning...all these "bolt on" parts for low hp vehicles don't really do much....u gotta get into the internals in order to make a significant difference...as for the G....i'm still not very familiar with it (actually nissan/infiniti in general, i'm a honda guy)...so i can't really comment on it...but from my experiences with honda, this is how i feel about pulleys and flywheels...

at the end of the day, i still believe it's not worth it...especially pulleys cause it doesn't do any short term damage, but it definitely wrecks the motor in the long run...

it's actually not THAT bad to drive uphill from a stop...that's what ur ebrakes for...i found that rushhour traffic was the worst...especially with a heavy *** clutch

+1 for proper technique :biggthumpup:

What kind of clutch did you have?

Exedy stage 2 clutch and exedy flywheel...

used it for 3 months, then removed and sold it

says the guy with the autotragic...

I have no problem at with both of these upgraded

+1 You do have to make an adjustment however :)

I think it is a great idea for me to drive a g35,g37, or 350z with a lightweight flywheel and performance clutch setup to see if that is really what i want. Maybe i can talk to sharif and see if he knows someone. You guys are a lot of help. Thanks:biggthumpup:

Ok my friend has a 00' Eclipse and my friend said putting a new flywheel and transmission would make his car perform better would it be the best decision and the cheapest one?

:icon43: A new transmission ? Oh yeah, those things are cheap. Like 50 bucks...

More like three fity

I am 29yrs with competition light flywheel and stage2 clutch on my 08' coupe. It took some time getting used. Although I live in suburbs of chicago, rush hour for me is not that bad to and from work(45min drive). BUT if you live in an area with heavy rush hr. traffic, it will get very annoying. After a while, atleast for me since it is my daily, I dont even notice it. It makes it a little fun rev matching more.

Just to add to this since it seems like I'm one of the few that has this installed (a few months too late). My slave cylinder blew 4 months ago and took the flywheel and clutch with it. The Stillen lightweight flywheel and clutch package was the same cost as the dealer quoted me for just replacing it with stock, so I decided to do it.

It downshifts WAY faster when you're rev matching. It feels a LITTLE faster, but not by a whole lot. The chatter from the transmission while in neutral with the clutch out is a little annoying (kinda sounds like a diesel engine at idle), but not too bad.

All these people that claim it is harder to drive...are only a little correct if you know what you are doing. I've stalled it more in the last 4 months than I have in the last 3 years, but it's only in like parking lots or other very slow maneuvering. Rush hour traffic is still fine, uphill starts are still fine. Then again I would heel-toe the engine on hills before, so that helped the transition.

Lighter wheels have much greater effect on acceleration than flywheel, and that has greater effect than pulleys. The farther weight lies from the axis of rotation, the stronger the inertial effect. Not only are tires and wheels larger in diameter than a flywheel, there are four of them vs the one flywheel.

Start at your wheels if you want more acceleration. If you've already achieved that goal, then yes, lighter flywheel. It didn't make that much of change in drivability on my Miata but I didn't get the lightest available because it's a street car.