Im about to purchase a exedy clutch kit and xact fly; but its 25 bucks for for the 8.5lb flywheel......wouldnt you want the lighter one?

 

you mean 25 bucks more? well I have a 12lb ACT flywheel and i think it revs up pretty quick. you have to remember the lighter flywheel revs quick as hell and you need to rev up from a stand still or you'll stall. is this a daily driver?

 

hehe yeah 25 bucks more for the lighter fly, so its 520shipped for exedy clutch and 12.8lb fly or 545 for exedy clutch and 8.8 fly and yes this is a daily driver NA; but what if it was a 10psi b16?

 

lighter is not better... to light and you lose tq.... also i personally would never get a alluminum flywheel bc when alluminum gets hot and cold it will exspand and contract alot and this can cause the flywheel bolts to come loose easy

 

The lighter the flywheel the better your acceleration & throttle response gets.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Katman &raquo;</TD></TR><TR><TD CLASS="quote">The lighter the flywheel the better your acceleration & throttle response gets.</TD></TR></TABLE>

yes but this car is a daily driver so think about lifespan
"short" since its alumminum and you are not going to use
as a drag car its not recommended.
like they stated before alumminum expands and contracts cause of the heat
and you are not going to drop the tranny every 5k minimum to check if any
bolts are loose right!
so get the 12lb but still not the best thing unless you take a stock fly wheel
and send it to a machine shop and lighten it plus a balance it.
its up to you

 

it also depends on the motor.

Running an ITR motor i would go 9-10 lbs
running an LS/Vtec I wouldnt go lighter than 12lbs, not a great offset for a light crank and a light flywheel

 

8.8 pound flywheels put a lot of stress on your rod bearing and valvetrain honda didnt design there engines to have that light of a flwheel, if i were you i would look into upgrading your valvetrain as well as putting in a thicker motor oil to cushion the rod bearing a little bit

 

I agree I see guys with 8.5's and the loose inertia on the top end..and especially when going up hills. We have a 13.25 and it revs hard yet keeps the inertia to keep the top end speeds competitive..My wife routinely spanks dual cams with her sohc VTEC. Of course everything else works in conjunction with this especiall a good clutch. Good Luck

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmjerk &raquo;</TD></TR><TR><TD CLASS="quote">hehe yeah 25 bucks more for the lighter fly, so its 520shipped for exedy clutch and 12.8lb fly or 545 for exedy clutch and 8.8 fly and yes this is a daily driver NA; but what if it was a 10psi b16?</TD></TR></TABLE>

I hear on a turbo setup, you don't want to lighten the flywheel to much, the flywheel is also there to store energy between shifts, and you don't want to lose too much exhaust power on the shifts...

-PHiZ

 

just get to oem flywheel resurfaced and lightened

 

man I didnt think there was so much say in this. Im glad I can actually get some responses compared to ::cough::g2ic.com::cough:: any how maybe i should just go for just the clutch, like I said this LS motor is just ***** and giggles until i finish my boosting project, the thing is I dont kow how long its going to take

 

Don't erally need that light of a flywheel. Hondas already don't have torque. Getting a lighter one will lose more momentum, also that fact that your engine will deccelerate quicker. I like a nice heavy flywheel. Like in a jeep i drove, i was on a steep hill and just released the clutch and the jeep went up withou hitting the gas.

 

I don't agree with any of the so-called downsides that some of you guys are spewing out upon your keyboards. A decent lightened f.wheel (around 10-13lbs, either billet, aluminum, or shaved stock wheel) is perfect and totally enjoyable on the street, even on a totally stock engine. It's worth doing and I back it %100.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">
to light and you lose tq
</TD></TR></TABLE>

Ugh, no you don't. Flywheel does not effect torque or HP in any way. I have seen dynos to prove it.

People saying what is and isn't too light probably havn't driven cars with a lighter than 10lb flywheel.

I have driven several tegs with 8lb flywheels and have no problems. A Boosted LS, ITR, and a GSR. All of them I can go back and forth with my stock flywheel and have to make little adjustment in the way I drive.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StyleTEG &raquo;</TD></TR><TR><TD CLASS="quote">Ugh, no you don't. Flywheel does not effect torque or HP in any way. I have seen dynos to prove it.</TD></TR></TABLE>

Thank you. If anything, a flywheel will increase torque compared to a standard flywheel. The rotational inertia of the flywheel has the exact same relationship to the crankshaft as the rotational inertia of the wheel does to the axle, in terms of physics. It's simply less mass, which means less energy is required to rotate it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSpeedR &raquo;</TD></TR><TR><TD CLASS="quote">

Thank you. If anything, a flywheel will increase torque compared to a standard flywheel. The rotational inertia of the flywheel has the exact same relationship to the crankshaft as the rotational inertia of the wheel does to the axle, in terms of physics. It's simply less mass, which means less energy is required to rotate it. </TD></TR></TABLE>

thank YOU for the excellent definition of a lightened f.wheel.

 

I think flywheel is heavy and it is for a good reason. I'm not sure what, but i honda has a good reason for it.

I saw this tv show and it is about this quick rollercoaster. The shows said that because the rollercoaster has a quick launch, it requires a 10k lbs flywheel to STORE the engery use to launch it. Without the 10k lbs flywheel, the system would take a while to build up enough engery to launch the coaster.

So I guess having a heavy flywheel in a car helps to store engery and reduces stalling.

 

Yes, it stored rotational energy to make it easier for the average joe to let out the clutch from a stop, and not stall. In fact, someone mentioned Jeeps..on some 4 cylinders, people buy bolt on discto add another 10 lbs to the flywheel, it makes them 'feel' liek they have more low end torque, when crawling over rocks. Me, my 7 Jeeps always were packing a I6 or V8 :-)

And StyleTeg is right, too, lightweight flywheels have no effect on the torque output of the engine.

It sometimes SEEMS that it adds power, even some dyno's show it. Inertia dynos, like a dynojet, base their numbers just off how fast you can accelerate rollers. If you remove weight, you have less intertia to accelerate. So the dynojet thinks you are making more horsepower.

If you tested them on a brake dyno, which uses large motors to apply braking force to the dyno rolls, there would be no difference.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by haggar &raquo;</TD></TR><TR><TD CLASS="quote">Yes, it stored rotational energy to make it easier for the average joe to let out the clutch from a stop, and not stall. And StyleTeg is right, too, lightweight flywheels have no effect on the torque output of the engine. </TD></TR></TABLE>

True, the larger momentum of the heavier flywheel increases drivability. However, if one wants to maximize the power produced by the engine to the ground, you would attach your wheels to both sides of the crankshaft eliminating all extraneous material that reduces our overall torque output (just making an analogy). So the lightest flywheel that will provide adequate drivability is the balance we need (thanks captain obvious).

BTW how does the "brake dyno" work?

 

In short just don't go too light with it.

 

well for 25 bucks more i think im still going to get the 8lb fly....seems worth it too me....thanks guys

 

Your gas mileage will go down more if you get the 8.5

 

I heard of stories of alum. flywheel breaking apart, flies through the firewall and sever a guy's leg. Make sure u get some kind of shielding.

 

ur gas mileage will get better on highway not to sure in town i would think so too... the only way ur gas mileage would get worse is that u love getting on it more and that the only way..