I had mine replaced with the Spoon flywheel last week at King. I also went ahead and had them put on the Mugen header.

All I can say is that the car feels TOTALLY different now. I would like to be able to identify which of these two things (or combination of them both) has made the car feel so totally different.

I feel NO hesitation at low RPM in one gear too high. The throttle response is far greater and in general the car feels MUCH faster, all across the RPM range. All I can say is that I am VERY impressed with how my car is performing. It's truly amazing...

I weighed the flywheels and the stock is about 14 pounds and the Spoon one is just under 9 pounds.

Here is a picture of the two side by side.



What is your input on why I feel the performance difference? Should I notice that much of a difference from the lighter flywheel? Scott says that it's the header and the dyno charts back up what he is saying.

What do you guys think?

Whatever it is, I absolutely freaking love it! Makes me do this ---->

 

yea definitely, the lighter the better.

 

oops, didn't see you talked about the mugen header. Yea header's do make a huge difference, everyone I know who gets headers says they truly feel the increased performance from their car.

 

Greg,

Both the header and the flywheel are making your performance gains! Otherwise why would you have bought two things!

Seriously,
The Mugen header has equal length exhaust runners (that is why the header looks all twisted) and this will help the S2000 with some needed torque down low (something about exhaust pulses and scavenging of the exhaust... stuff that is over my head) while giving you a little bit of power up on top.

As far as the flywheel goes... it something called Moment of Inertia. It is a lot easier to spin something around when the majority of the weight is closer to the center of rotation. So on the S2000 if you have 5 pounds less weight to spin around, the same engine power will be able to spin the flywheel around faster... thus making the car accelerate quicker. But do beware that this acceleration comes at a cost of road torque at freeway speeds...

Sorry about the novel...sometimes I get a little enthusiastic

 

Greg, as you know, if the insurance comapny does not replace my car I will be having some major engine work done, and I think this would be the perfect time to replace my flywheel. It sounds like my kind of upgrade... I want to hear more about it.

How much does it cost?
What exact kind of preformance differences do you feel?
tell me more.

Oppinons are welcome... should I do it? I feel like this is the perfect time, as I will get a free install.

 

Not true....

 

Someone mentioned to me once that a lighter flywheel could be bad for a NA car, but a forced induction setup would benefit from it...not sure why. Anyone care to explain?

Wesmaster

 

Somone please elaborate.

 

Yes, I understand the moment of inertia. And I understand spinning a lighter object, etc...

However, given the ~5lb weight difference, I was curious to know what should I be able to FEEL while driving? I am dead serious when I say my car feels TOTALLY different now. It's much faster and the added torque makes it so much more drivable around town...

I wanted to see what you thought were the results of the header and what was the result of the flywheel. All I know is that as far as I can tell, this is a substantial difference and I freaking love it.

Any ideas?

 

hmmm, well it was dicussed before that lighter weight on the flywheel meant it would spin up quicker as well as spinning down when off the gas. this would equal more control of the rpm's, but also a little more precise you'd have to be if you wanted to rev-match your shifts.

I think the losing torque side of the issue would be more in line with the larger motors, not necessarily a 2ltr 4cyl, but that is my take. I'd get one, but I'm not ready to bring the tranny down yet.

what's your take?