Well im putting in a new tranny, so i was also goin to replace my clutch and flywheel, im goin to prolly go with a Comp. Stage 1 clutch, now for a clywheel. Is crower good?, my other choices would be Fidanza and Comp.

 

THIS IS MY OPINION.. cuz I know how many fidanza fans there are on here. Although it's true that a lighter flywheel can free more power by lightening the rotating assembly (don't argue, this is true), it can cause worse gas milage on highway driving BECAUSE... A heavier flywheel (like the OEM) creates more momentum at high speeds than a light flywheel, therefore keeps itself spinning easier and requires less power to drive it. On the contrary, a lightweight flywheel requires more power to be driven at higher speeds, and even makes the top speed suffer (which most of us don't care about anyway.)

So lightweight flywheels are great for racing, but some people argue that they're harder to drive with from stoplight to stop light, requiring you to release the clutch at higher RPM than normal

(I don't care if you think it's easy, I don't wan to hear it, I've seen pages and pages of people arguing whether it's easier to drive with or not.)

So Anyways, if I had a choice I would get a flywheel that is around 11 lbs, versus 8, and made of chromoly. Too bad JUN flywheels are so expensive.

 

Didn't mean to post twice.

 

i understand ur point... I had a 7lb in my integra and didnt mind it. And i was just mainly wondering if crower made a good flywheel. if not then im goin to mainly go with fidanza.... Either way im upgrading it since everything will be out

 

O, then nm. I'm gonna go eat my KFC now, it's getting cold.

 

Who all make Chromoly Flywheels?
I know JUN, but who else?? I'm almost sure I've seen one other company, but I can't remember at the moment..
Just wondering...

 

Cusco, ACT, Arrow Precision, Action Clutch, probably more. Then there are probably some brands on eBay. If they all make flywheels for F/H motors I don't know.

A JUN Ultra-lightweight flywheel for F/H series is $450-$470. These are the best, made of forged chromoly, and are 200% stronger than the stock flywheel, while weighing in at 11.466 lbs. (5.2kg).

 

lol, I know how much they weigh and everything about them... I have one!

Really? I didn't know all those brands made Chromoly Flywheels... That's nice, how's the price on them compared to the JUN Flywheels??
And JUN REALLY sells them for that much??? JUN's site doesn't say. I found one place that sells them for $400 for the Ultra Light, and I thought that was kind of expensive...

 

Oh nice man!

I got those number from a couple of sites, just did a search on chromoly flywheels and JUN flywheels popped up for sale on a couple of sites. Yeah I didn't know Cusco even made flywheels (althought it was for a 240sx) until I did a search.

 

I know that Jun is an awesome brand but as of right now i cant afford that, so The original main question was me just tryin to figure out if CROWER was a decent brand for a flywheel?????

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fast_honda &raquo;</TD></TR><TR><TD CLASS="quote">Although it's true that a lighter flywheel can free more power by lightening the rotating assembly (don't argue, this is true), it can cause worse gas milage on highway driving BECAUSE... A heavier flywheel (like the OEM) creates more momentum at high speeds than a light flywheel, therefore keeps itself spinning easier and requires less power to drive it. On the contrary, a lightweight flywheel requires more power to be driven at higher speeds, and even makes the top speed suffer (which most of us don't care about anyway.) </TD></TR></TABLE>
Sorry man, but you suck at physics.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris F &raquo;</TD></TR><TR><TD CLASS="quote">
Sorry man, but you suck at physics.
</TD></TR></TABLE>

To elaborate,

At 55 MPH on the highway, the weight and rotatioal velocity of the flywheel isn't changing, so the angular momentum and kinetic energy are also not changing. Because the kinetic energy isn't changing, the motor isn't spending any extra energy (gas) to keep it spinning, no matter how much it weighs. Since you're not changing the speed of the flywheel, it's not going to change your fuel economy on the highway (similar to adding 100 lbs of lead in the trunk).

To accelerate, the engine has to use more energy (gas) to put into the flywheel, because at a faster speed it's going to have more energy (proportional to the weight and the square of the angular velocity). This leaves less energy to accelerate the mass of the car in the forward direction. This is the main reason people want a lighter flywheel, in addition to just being easier to rev-match while shifting etc.

When coasting in gear, the engine is absorbing some energy due to its compression, friction, etc., and air friction is also absorbing some energy. The heavy-flywheel car will decelerate slower because it's flywheel has more stored energy.

When braking in gear, the brakes will have to absorb more heat energy to stop the heavy flywheel car, because of the extra stored energy.

 

Yeah, I guess I do, or at least the teacher who taught me that does. So if I read that right, a lighter flywheel can actually improve gas milage since it takes less energy (gas) to drive it?

 

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

To elaborate,

At 55 MPH on the highway, the weight and rotatioal velocity of the flywheel isn't changing, so the angular momentum and kinetic energy are also not changing. Because the kinetic energy isn't changing, the motor isn't spending any extra energy (gas) to keep it spinning, no matter how much it weighs. Since you're not changing the speed of the flywheel, it's not going to change your fuel economy on the highway (similar to adding 100 lbs of lead in the trunk).

To accelerate, the engine has to use more energy (gas) to put into the flywheel, because at a faster speed it's going to have more energy (proportional to the weight and the square of the angular velocity). This leaves less energy to accelerate the mass of the car in the forward direction. This is the main reason people want a lighter flywheel, in addition to just being easier to rev-match while shifting etc.

When coasting in gear, the engine is absorbing some energy due to its compression, friction, etc., and air friction is also absorbing some energy. The heavy-flywheel car will decelerate slower because it's flywheel has more stored energy.

When braking in gear, the brakes will have to absorb more heat energy to stop the heavy flywheel car, because of the extra stored energy.</TD></TR></TABLE>

wow good post, i've lost all my physic's knowledge..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fast_honda &raquo;</TD></TR><TR><TD CLASS="quote">Yeah, I guess I do, or at least the teacher who taught me that does. So if I read that right, a lighter flywheel can actually improve gas milage since it takes less energy (gas) to drive it?</TD></TR></TABLE>

In stop and go traffic? Absolutely. For a long highway run, not at all, won't change a thing.

Edit: To the original poster... I'm a Fidanza fanboy Never used any other light flywheels, so I can't say which ones suck or not. My ACT pressure plate died, and I'm now on a Centerforce "Dual Friction" clutch because Summit Racing in Akron Ohio had it in stock at 9 PM It works fine for my motor, which is pretty healthy by NA standards.