flywheel feelings

[Captain KRM P5]

give me a butt dyno result

what kind of increase do you feel between the Fidanza 9lb. flywheel and the stock 19lbs. wheel?

 

[soulstylee]

It's a very nice upgrade. You will definately notice a difference. The less weight your drivetrain has to rotate, the less power is lost to the drivetrain. It was one of my most noticable mods. The car revs up much quicker.

I see you have the Mazdaspeed flywheel. Obviously the differences won't be as drastic as if you were switching out your stocker, but I imagine you'll still notice a decent difference.

 

[changedman]

right. try to lift 9lbs and try to lift 19 lbs. basically that paints a good picture. the tranny can put out more power if it doesnt have to try as hard...

 

[LinuxRacr]

I think there was a thread done by Equinox that stated that he got like 4-5 HP on the dyno. I have the Fidanza also, and the way I can take off on the highway in 5th gear is unreal. Boost + Flywheel = (burnout)

 

[changedman]

i was looking at a clutch/flywheel special for $550 shipped i believe. stage 2!

 

[ZoomFive]

How does the flywheel affect overall drivability? I know that the rev up is faster, but I hear that the weight of the flywheel is needed to keep the revs up when downshifting smoothly.



- ZoomFive

 

[igdrasil]

How does the flywheel affect overall drivability? I know that the rev up is faster, but I hear that the weight of the flywheel is needed to keep the revs up when downshifting smoothly.



- ZoomFive

Well, I dont have one, but "my logic" on physics says that shifting will need more attention, meaning the rev-matching will be a bit more difficult, just a bit. But shifting could be done faster. So, theres a trade, a good one.

And...you will need to slip the clutch a bit when launching, the inertial load that the heavy flywheel had to help move the car will not be present, thus using direct power from the engine itself. Not a big deal, our cars has plenty of torque to assist.

 

[Installshield 2]

Well, I dont have one, but "my logic" on physics says that shifting will need more attention, meaning the rev-matching will be a bit more difficult, just a bit. But shifting could be done faster. So, theres a trade, a good one.

And...you will need to slip the clutch a bit when launching, the inertial load that the heavy flywheel had to help move the car will not be present, thus using direct power from the engine itself. Not a big deal, our cars has plenty of torque to assist.

Well said...

the loss of rotational inertia causes the weight of the car to easily slow the flywheel with quick clutch slipping...You can either rev the engine a little higher and keep the same amount of clutch slip you did before, or slip the clutch slower to get moving...This is the same thing that makes a lot of people claim they kill 60 ft times...They are just simply harder to launch at first (you need to rev about 1500rpm higher than you normal would during a drop clutch start to prevent engine bogging), but once you get use to it they will immensely help every acceleration factor of 1st and second gear...

Some say that the car slows down faster after you let off the throttle on the highway (doesn't coast as easily), which could be the case...some notice it more than others however...

 

[redwagon02]

I think there was a thread done by Equinox that stated that he got like 4-5 HP on the dyno. I have the Fidanza also, and the way I can take off on the highway in 5th gear is unreal. Boost + Flywheel = (burnout)

How's the durability? Since it's been out for awhile. Always wanted to know since the 9 lb vs 15 and 19 lb flywheels are a big difference.

 

[PaulMP3]

I think there was a thread done by Equinox that stated that he got like 4-5 HP on the dyno. I have the Fidanza also, and the way I can take off on the highway in 5th gear is unreal. Boost + Flywheel = (burnout)

werd, boost comes in so fast and strong in 5th. No need to downshift, just hold on tight


It does seem harder to get started though, yo have to rev a lil higher during normal start ups.

 

[Captain KRM P5]

I see you have the Mazdaspeed flywheel

Total waste of money let me assure you - its at best, three pounds lighter than stock. I'm looking for something a little more zoom zoom

 

[Dimitrios]

See about remachining the MSP flywheel down Ken...maybe shave another 2 or 3 lbs. off..

 

[infrared5]

Ive seen a Fidanza 9lb flywheel on a Probe GT and its pretty sweet, revs so fast you wont believe your ears. But ive heard it throws off the balance of the crank which will cause problems over time.

 

[Installshield 2]

Ive seen a Fidanza 9lb flywheel on a Probe GT and its pretty sweet, revs so fast you wont believe your ears. But ive heard it throws off the balance of the crank which will cause problems over time.

That is a tricky myth/fact (depending on application) that is difficult to determine...Some cars (such as 2.0L protege's) are equipped with harmonic resonators which double as crank pullies...Those are heavy enough to prevent the conditions that can cause crank issues...

The problem occurs when an owner runs decent boost, a lightweight flywheel, and a lightweight underdriver pulley usually...But don't ask me what the "problem" is or how "it" occurs...there is a lot of controversy over whether or not running that combo will cause any problems on the forged crank of the FS...Some turbocharged Probe SE owners encountered crank issues with the addition of the flywheel and pulley, but they have a much weaker crank (it isn't forged) than protege owners...

With just a lightweight flywheel on a NA FS, nothing will happen other than the minor annoyances already mentioned...Probably so on an NA FS with both the flywheel and the pulley...I will not comment on adding a turbo after that, simply becuase I have never seen evidence of it actually doing harm, but a lot of knowledgable people claim it will...

 

[twilightprotege]

i think the main thing to remember when you're building a powerful engine, make sure everything is balanced!!!