scarlemthug

Since im replacing the clutch on my car im looking at the best option as far as the flywheel goes. I was looking at getting a fidanza flywheel but its 7.5lbs which ive heard is way too light for turbo setups(future). I would like to go with something like 10-12lbs, anyone know a company that offers one in that range thats not overly priced or my other option is having it lightened to 10lbs by leitner and resurfaced. How much does the OEM flywheel on a B18B1/ GSR tranny weigh stock?

imported_trackhack

Hey Chris,

I found and purchased a Yonaka Motorsports flywheel for my car (non-turbo) and noticed an improvement in regards to the engine response without any driveability problems. It's just under 9lbs. and resonably priced compared to a fidanza or an exedy flywheel.

Follow the link:
http://www.streetimports.com/products.asp?catid=101
Hope this helps.

Shawn

WayFastWhitie

I remember it being around 17.2lbs or 18.2lbs.

I know that ACT makes a 12lb flywheel. Give them a try.

zeeman

iTrader: (1)

i've read that lightened flywheels in essence effect the longevity of your engine. There's a whole science behind this statement but its basically because the flywheel absorbs a lot of vibrations and such that would be passed on to the internals and having a lighter flywheel (one with less mass) would mean that more vibrations are passed onto your engine. Thus, decreasing the lifespan.
Anyone care to add to this?

imported_trackhack

Known as Harmonics, same principle as the vibrating tuning fork you've most likely seen before. These harmonics travel in waves of varying frequencies. Your correct when you assume that more mass with dampen the effect of the vibrations but...

This is the reason the accessory drive pulley on the other side of your engine has so much mass to it, in order to dampen the vibrations created by your engine. The performance aftermarket is starting to manufacture "harmonic balancers" for Honda engines that are fluid/gel filled while still remaining light weight. Fludamper is a name that comes to mind.

In regards to the lightweight flywheel affecting the longevity of your engine, I believe that theoretically this is untrue, as I do not have firsthand knowledge. (If my engine fails because of the lightweight flyhweel, I'll be the first one to let you know.)

I say this as even though the flywheel is light, the engine still has to turn the mass of the clutch disc, pressure plate and transmission input shaft along with the gearset and final drive gears. Any other opinions? Please correct me if you have a better understanding.

scarlemthug

i believe the problem with a lightweight flywheel is that it transfers more of the "shock" from the clutch than a heavier flywheel will.

Steve I emailed you about getting my stock one resurfaced and lightened to 12lbs, if you can pm me or email me back LMK ASAP. I know ACT makes there 12.5lb flywheel but its also almost $400 so screw that.

Just ordered a stage 3 clutchmasters clutch, hopefully its purrty.

WayFastWhitie

I dont belive all that harmonic junk.

I run a n1 pulley with no dampaner and a 8lb flywheel.

scarlemthug

When your shifting do your rpms drop really quickly? I think my best bet is to run a 10-12lb OEM lightened flywheel. just need to get a price on one from steve

imported_trackhack

Engine RPMs only drop quickly if you don't know how to shift, otherwise it's fine.

As for the harmonics thing, I'd believe in it, pick up any book on engine building, mechanics of materials, dynamics etc. and the theory should be right there.

WayFastWhitie

No my rpm's dont drop all that fast, just have to shift quick.

Well i do belive it exists, i just dont belive its all that much of a big deal. Heck.. Some people do alot worse to their honda' engines.

Like when people run their stock b16 bottom ends to 10k

imported_trackhack

I'll have to agree with you on that one. 10K is pointless when your hp peak is at 7600-7800 and when your torque peak(more important) is even lower than that. Apparently more noise is a good thing these days.

To get back to Chris's flywheel question though, I'll weigh my stock OEM one for you tonight to give u some numbers, I just haven't had the time.

imported_rbjeepthing

ACT makes a 11-12 lbs flywheel and our price on a Fidaeza is like 300 bucks i don't think that's that expensive

HAPPY

If you are only shooting for 12lbs -- just lighten your stick flywheel. It will be plenty safe and will save you some cash.

LB did mine on my old civic and it was beautiful.

scarlemthug

yup im thinking just get an OEM lightened, balanced and resurfaced flywheel instead of paying the premium for an ACT unit. The fidanza unit would be my first choice as far as aftermarket pieces go because you can replace the clutch contact area for like $100 instead of having it resurfaced.

imported_trackhack

Chris, the OEM Flywheel (GSR) is 16lbs.

If your going to lighten your flywheel to 12lbs you'll notice it right off idle.

scarlemthug

sounds good, not sure if i wanna go down to 10lbs which is the lightest i would probably go. Hopefully I can pick up a flywheel from leitner ASAP so i can get my new clutch and pressure plate it and start the break in process.

kimchee

How much is Leitner charging for this?
Do they have already lightened flywheels in stock?
Do they take out your OEM flywheel and install the lightened one at their shop?

just curious

scarlemthug

You would have to email them for pricing, they have lightened, balanced and resurfaced flywheels ready to buy already. They can remove your OEM and lighten that or they can remove ur OEM and replace it with the OEM one.

Email Sales@conceptsonwheels.com for info

I am picking mine up tommorow, im leaning towards 10lbs but we shall see.

sir168

so how much did you pay for your lightened flywheel?

scarlemthug

Yup i was more than happy with my flywheel from Steve, the resurfacing was awesome and i got an awesome deal compared to paying like $300 for a fidanza one. Definitely recomend going to concepts to get your flywheels.