im about to order a JUN flywheel just wondering if i should go light or ultra light the car will most likley be all motor maybe some nitrous

is there really much of difference between a 11lb to a 10lb flywheel?

 

No.

 

I am running Jun's Ultralightweight flywheel for my H22a and love it!

Mark

 

How much does the Jun flywheel improve engine response?

 

Save your money, Buy a CM or Fidanza flywheel at http://www.groupbuycenter.com

300$ shipped.. 8lbs.. Fully streetable with the prelude torque...

 

i get wholesale so the price isnt a problem

 

i got a CM 8lb flywheel for the h22 on ebay from import auto salvage for 265 + around 12 bucks shipping. i think that will hold up to driving as well as a JUN and is lighter and cheaper

 

Can you actually feel the diffrence between stock and a lightened flywheel as you are driving, or does it just rev quicker when in neutral? Would it make you go any faster in an otherwise stock car? And one more; what does the stock flywheel weigh? Sorry for asking on your thread B16aVtecCivic, but since we were on the subject...

 

Stock flywheel, 20lbs
CM, 8lbs

HUGE difference when driving the car, the revs just climb and fall so much easier, shifting gears are smoother due to the motor being able to change speeds easy enough...

If you are in to mad *** burnouts, trying to spin the tires on upshifts, and stupid **** like that, than a light flywheel is not for you

 

I took out my stock fly (weighed in at 18.5 lbs) and replaced it with a lighted factory fly (14.5 lbs), even with this small difference the change in throttle response is noticeable. What I like about chromoly flies is that they are one piece unlike the 3-piece aluminum ones. Cusco is coming out with a chromoly one for the H22 soon... I'd get that or the Jun (and have heard a lot of bad things about Jun B-series flywheels).

 

with the lightweight flywheel you can loose the momentum of the stock flywheel (perpetual motion) so your top speed wont be as high and your car wont slow as much when down shifting so i would go with a lightened one but not an ultra light that way you still retain some of the benefits for high speed and downshifts but if you are only drag racing then it may not be important to you.
The JUN flywheel is very good but i may even consider shaving a few lb off your stock..

ViZ

 

Top speed is purely a factor of HP, gearing and aerodynamic drag. Nothing to do with the weight of the car or flywheel.
You can put 800 lbs in your car and the top speed will still be the same, it'll just take long as hell to get there.

 

i had a ZEX ulta light in my b16a i loved it, i want to keep with chromoly so i went with JUN, i got the light one not ultra

 

This is really misinformation.. Never with a lightweight flywheel make less top speed, or take you less to get there.. Your still accelerating, and less weight on the crank matters...

 

ive heard bad things about chromoly flywheels.. like incidents where they didnt hold up well under stress and breaking. even one horror story where it went through the passenger firewall and cut up some guys leg. of course, this could all be bullshit, and probably is. but just hearing something like that will prevent me from ever buying a chromoly flywheel.

 

Yup, and there's no such thing as perpetual motion either. Maybe he meant centrifugal force, which even some may argue does not exist either.

 

perpetual motion
n.
The hypothetical continuous operation of an isolated mechanical device or other closed system without a sustaining energy source.


say you have a disk with a hole in the middle like a weight, put a bearing in the middle of it and mount it on something then do the same on another disk with less weight and do the same now spin both of them with the same force, the one that weighs the most should maintain its speed longer then the lighter one...
but im no scientist with only basic college education so far. So i may be wrong


[Modified by ViZ, 12:16 PM 8/14/2002]

 

but as the definition states it is hypothetical, so its existance i suppose can be questioned..


[Modified by ViZ, 12:18 PM 8/14/2002]

 

the jun h22a flywheel is a beautiful piece. i sold mine to ackulsarits before i had a chance to put it in.

however, i used to run an 8lb. cm flywheel with my old h22a accord. the difference is significantly noticeable.

it is the best money you can spend on a car. $300 and the throttle response is amazing. makes the car feel much lighter, accelerates quicker. not only just in the lower, but with the h22a 5th gear is just gone. very nice upgrade for any car.

 

So, since I don't drag race with my prelude, but only use it to carve up back roads once in a while, it would be a pretty worthy upgrade, right? Can there be any ill effects of the flywheel being lighter on the longevity of the drivetrain, especially if you lighten the stock one?

 

chromoly is the strongest material you can buy. racers used it for roll cages. how can it break? JUN flywheels is like 35% stronger than stock. CM says there flywheels are rebuildable... soo its likely to break? or mess up?.. i went with JUN lightweight. lov it! had it for 1 yr now. no problem at all.

 

i have a cm 10 lb flywheel and it works great.

i have a cm stage 3 clutch w/low miles for sale

 

Do any of the chromoly flywheels have the timing marks on them?

 

how much is hte jun lightweight

 

I have the CM 8lb fly and it's REALLY noticeable. It just revs quicker and throttle response is more like telepathy, it revs before I even apply the throttle. The only other mods I have is I/E.

Although the rpms do drop significantly quicker between shifts, it forces me to practice my heel-toe technique more often.