7.5 here...i decided to get the lightest for my n/a plans, but those plans have changed..hehe. its pretty hard to launch and just to get going, actually harder now w/ the turbo but other than that,i think it makes you a better driver, NOT TO MENTION downshifts are SOOOO much fun...i rev match it perfect every time

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by quikB18B &raquo;</TD></TR><TR><TD CLASS="quote">My other ? is does a flywheel help in the same sense as a shorter geared tranny would?</TD></TR></TABLE>
No not really, think about it this way... When you put a tranny with tighter gearing on your motor, it revs up faster only because you've traveled less of a distance (tire rollout) before you've maxed out the gear... (This is just an example so forgive me for the numbers being off, at 8500rpm an LS tranny in 3rd gear will allow you to achieve an actual ground speed of 117mph on 24.5" tall wheels, the same setup with a GSR tranny reving to 8.5K will have you somewhere around 106mph...) This is assuming you are using the same motor (so hp, etc. stay constant)... You can see how the LS tranny allows you to travel farther because it can attain a higher mph at the same rpm, right? Now if you put a lightened flywheel on, say you use the same LS, you'll still only be able to go 117mph in 3rd because the gears aren't getting any "shorter", it just has the possibility to rev up a little faster... Also not that removing your power steering frees up a lot of power but a flywheel (weight) isn't necessarily loading the motor where as the alternator, waterpump, A/C (when it's on), and power steering are (these guys all have some sort of resistance)... Hope this helps and you can understand this, gotta run to class... Peace

 

 

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

you wont see any WHP gains from a flywheel...only quicker revs

mike</TD></TR></TABLE>

lower rotational mass has to affect WHP in some way.
does it not?

 

How so? There is no gain in kinetic energy what so ever... As stated before your motor will rev up faster but that has no affect on your hp output...

 

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

lower rotational mass has to affect WHP in some way.
does it not?

</TD></TR></TABLE>

actually no it doesnt. it only reduces the parasitic drag on the motor freeing up HP, but does not create/make HP. same as headers and exhausts. Nitrous and turbos on the other hand...

well im just being picky.

Hypa hooked me up with my 10lb flywheel. I love it.

 

I'll disagree with you there... You're saying that affecting the flow of an engine will not increase (or decrease) hp when most OE parts are pretty damn restrictive? This is "freeing" up hp but your motor is making it... Well I gotta run, time for class...

 

Well, let's think about what a flywheel does. It stores kinetic energy, right? So where does it get this energy it's storing? It's taking that energy that could have been used to turn the wheels. Now at a stop light, where the flywheel is in motion but the wheels aren't, this helps you at launch, because that stored energy can be used to get the wheels going. After that, the engine is forced to spin the flywheel (overcoming its inertia) in order to accelerate. That's where a heavy flywheel costs you.

 

That sounds good to me, but again that's going from being stopped to moving, not rolling to accelerating as I was talking about...

 

Well, I went from a stock gsr to a TODA 8lb and then back to stock, this time ITR.
After being able to cut low 2.0x 60's with Azenis and gsr flywheel (ACT HDSS clutch setup) I went with the TODA. Couldnt get the 60's under mid 2.1's to 2.2's. I tossed that bitch and went with an ITR and I love it. Although the motor is built and I only run slicks at the track now I have no comparison there, but I think its a nice medium.
You guys talking about your 1100 Tilton setups are really just rubbing it in everyone's face I wish I would have spend an extra 500 and got the Tilton twin disc instead of my CM4.

 

Once off the line and acclerating does it feel like the car acclerates faster with a lightened flywheel say a 12lb flywheel compared to stock?

 

Not sure if this already been covered here but when you take away rotating mass from a balanced motor...i.e....crank pulley or flywheel does it put stress on your motor......heard bad things about crank pulleys...just wondering about the flywheel.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbozxi &raquo;</TD></TR><TR><TD CLASS="quote">Once off the line and acclerating does it feel like the car acclerates faster with a lightened flywheel say a 12lb flywheel compared to stock? </TD></TR></TABLE>
When I changed to the 12lb, it was like going from a fAT ChRoME 18", to a sweet set of 16" TE37. Accelerating was quicker, along with easier revmatching. Then I went to the 7.8lb CM unit, and it was an even bigger difference, although I had gone past the sweet spot for flywheel weigh on a street car (approx. 11-13lbs). The 7.8lb unit is a bit tougher to drive, although once you figure out how it works, it actually becomes a worthy mod for the track.

I know for a fact that you won't be disappointed with a 12lb flywheel.

 

Cool hopefully get my car back this week so will know myself got ACT streetlite.

 

so you get higher 60 ft times with a lighter flywheel?

 

Cusco clutch, disc, and flywheel (complete): 18.8lbs....yeah baby!