hi, ive read somwhere its not a good idea to run a lighter flywheel with boost and to stick with stock , but dont know why ?, my gearbox has just gone **** and i was gonna change the flywheel while i was in there. im gonna boost the b16 later in the year. should i change it ? .

 

Well the theory is that you're going thru the gears so fast with boost anyways, and a lighter flywheel will only make them go by faster. So alot of people run stock flywheels.

 

ive got a real light exedy in my teg, wouldnt trade it for stock in a second. i love it, its so much easier to control wheelspin with a lightweight flywheel

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crex23 &raquo;</TD></TR><TR><TD CLASS="quote">Well the theory is that you're going thru the gears so fast with boost anyways, and a lighter flywheel will only make them go by faster. So alot of people run stock flywheels.</TD></TR></TABLE>

Wouldn't you WANT to make gears go by faster?! I mean... acceleration is the point of all this right?

 

it has to be something w/ the momentum of the heavier flywheel....idk what, but it has to make a difference of some kind....someone elaborate because i don't know what the difference is.

Bump for info tho because i just bought a new Exedy Clutch and lightweight ACT Fly.....

 

Its all about moving mass, you take away more weight from the crank thus allowing it to spin more freely, less weight on the crank less power it takes to turn something= more power.

For every pound you take off the crank it equals something like 3hp. Thats why there was such a craze over underdrive pulleys.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by urbansi &raquo;</TD></TR><TR><TD CLASS="quote">Its all about moving mass, you take away more weight from the crank thus allowing it to spin more freely, less weight on the crank less power it takes to turn something= more power.

For every pound you take off the crank it equals something like 3hp. Thats why there was such a craze over underdrive pulleys.</TD></TR></TABLE>
So lets say I install a light weight flywheel into my gsr tranny would that make it equal to a b16 tranny. (I know it want change the gearing but it will make your car rev quicker correct)

 

its all about intertia. thats the "momentum" u were talking about. basically, a stock flywheel allows you to shift slower and be as the same rpm as u would be if u shifted faster with a lightened flywheel. the argument is that the higher intertia or a stock (heavy) flywheel will keep the turbo spooled better between shifts.

this argument is total horse **** and ill always use a lightened flywheel, makes rev maching MUCH easier

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by I Have an STD &raquo;</TD></TR><TR><TD CLASS="quote">its all about intertia. thats the "momentum" u were talking about. basically, a stock flywheel allows you to shift slower and be as the same rpm as u would be if u shifted faster with a lightened flywheel. the argument is that the higher intertia or a stock (heavy) flywheel will keep the turbo spooled better between shifts.

this argument is total horse **** and ill always use a lightened flywheel, makes rev maching MUCH easier</TD></TR></TABLE>

yeah the whole heavier flywheel keeps things spooled or out of the "hole" the car will have more momentum with a heavier flywheel; this is all real old school thoughts. A buddy of mine has a 65 nova with an enormously heavy flywheel. Its all what you want it to be, and what makes you happy. Although i have heard people bitch about light flywheels on street cars because they say they get real annoying when having to shift a lot.

 

I just bought a stock one from a buddy that had his machined down to 11lbs it works great and I actually noticed it a lot when I swapped from the stock heavy one I was thinking about going with a ACT but I was told to light you will have to rev in the Higher Rpms when launching your car with a Heavier flywheel it will pull out of the hole immitating tourqe I know a guy running a 22lbs flywheel on his race car and Loves it....Its all in what you want but i wouldn't go any lighter then 11lbs

 

lightweight flywheels makes revs faster, but it works both ways. A lot of people complain because it'll rev DOWN faster between shifts.......sometimes so fast you drop back out of your powerband and "hit a wall" before you get back into full boost..........

i say, stop complaining and learn how to shift faster!

i've got a lightweight flywheel in my turbo setup and i will NEVER get rid of it......love it TOO much!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by buttsneeze &raquo;</TD></TR><TR><TD CLASS="quote">lightweight flywheels makes revs faster, but it works both ways. A lot of people complain because it'll rev DOWN faster between shifts.......sometimes so fast you drop back out of your powerband and "hit a wall" before you get back into full boost..........

i say, stop complaining and learn how to shift faster!

i've got a lightweight flywheel in my turbo setup and i will NEVER get rid of it......love it TOO much!</TD></TR></TABLE>

This is true. I'm using a fidanza 8lb flywheel - it does drop the revs quicker; however, I got a short shifter - so, its pretty much the same now. Sometimes I think the car is revving up too quick

 

i run an itr flywheel

 

another thing to look at is where the weight is focused at in the flywheel. Say you have a 10lb fly wheel with the majority of the weight focused on the outter diameter, and a 15lb flywheel with the majority of the weight in the center of the flywheel.

while in motion the heavier flywheel will act more like a light weight flywheel, and the lighter flywheel will act as a heavier flywheel.

i personally had a 8.5 in my boosted h22a and it rev'd fast as hell, now i've switched to an osgiken twin disk setup that weighs literally twice the weight of my old setup. which i can see positives and negitives to this.

Its more inertia in between the shifts and with a bigger turbo this is good because you have less risk of falling out of boost in between shifts. its also going to hit harder off the line which with proper traction should lead way better 60ft times. But lighter does equal faster revs less rotational mass etc.. so its pretty much up to your intentions with the car

But i'm thinking about having the flywheel machined on the outer diameter to get some weight out of it. becauseits rediculously heavy