Negatives of an Fidanza flywheel?

[Clearalbino]

I've been searching almost every fourm site and I still havent found the anwser to my question.

Are there any negatives installing a fidanza flywheel on a daily driver?

[InsanityInc]

Drops revs much faster when shifting.

[240DRFT]

wont u burn up the clutch more when like in stop and go traffic?

[Clearalbino]

Thats what I also thought but I'm unsure at the moment.

[koukiKA240]

its aluminum so u have to be carefull when reinstalling it. Always use loctite and always tourque to factory spec, NEVER overtourque any fly or pressure plate bolts when using it.~Sam

[240DRFT]

Thats what I also thought but I'm unsure at the moment.

well i think it does, unless someone knows otherwise

[3blackbirds]

whenever you drive uphill, you loose gas milage and overall momentum of the motor.

[Kenrik]

ok so it's bad for uphill.... I live in Florida so no biggie what about on flat ground? do you loose torque? will gas mileage be better or worse? all I ever hear are positives what are the drawbacks?

[max240se]

ok so it's bad for uphill.... I live in Florida so no biggie what about on flat ground? do you loose torque? will gas mileage be better or worse? all I ever hear are positives what are the drawbacks?

i thought thats what they were talking about already, the negatives of it.

[Marquinho]

Regarding your question - asking for negatives on a flywheel falls under the same category as any other performance upgrade - you loose something to gain something somewhere else. Power increase is always a compromise. It all boils down to how much you're willing to sacrifice to gain a few ponies.In the case of a flywheel, the most noticeable effect is stalling the engine when taking off. If you don’t shift fast enough, you will experience a bit of a stutter as the engine revs fall down below the ideal mark and then it is forced to rev up to match car speed as you release the clutch. A lighter flywheel will reduce the engine momentum and by being lighter it also reduces the effort the engine needs to spin it (here is the where the free HP comes in).

I don't think you should have any issues with it as long as you know what you're doing and its effects on drivability.

Cheers,Marco

[Kenrik]

Ok sounds good I shift fast as is plus another upgrade i'm going to be doing around the same time is the short shifter.. I don't think I have stalled my car in over a year... i'm sure I will when i'm getting used to the new combo but I think I can handle it.

[3blackbirds]

lightened flywheels can be tricky when trying to start out. you just gotta get used to it. short shifters are cool, but they can be a pain. they dont like to go in to gear sometimes. my friend had the combo you are talking about. flywheel, clutch and short shifter. me personally, the short shifter wasnt worth the hassle.

[Chiefgmsr]

Things will get a little noisier. Especially with the short shifter combo

[colies97~240sx]

I have been using a fidenza flywheel on my car for over a year now, I drive it every day, summer and winter. It went in with my manual transmission swap. No big problems, it tends to have some flywheel chatter when its idle at certain rpms but no big deal. It changes with what components are on, ac, fan, lights, etc.

Unfortunately I have no comparison to what the stock flywheel is like vs. the fidenza since I learned how to drive manual on my car once it was swapped. I’m due for a new clutch but I doubt its any fault of the flywheel. Just like most things I'm sure clutch wear goes back to more of how you drive your car.

As far as gas mileage goes I get about 25 mpg how the car is now, which is an improvement over when it was auto. I can't tell you how much of that is affected by the flywheel. If you do lose any I doubt its anything noticeable. Again, it's all in how you drive the car... A lightened flywheel can be good or bad depending on what application you are using it for and what gains you are looking for. There is no clear cut line saying lightened flywheels are good or bad. It just depends on what side you are looking at it from, it can be a glass is half full or half empty thing.

I can say that personally I'm totally happy with it and don’t regret getting it, the car revs so much faster and I enjoy driving it every day, especially on twisty roads... However, if you’re looking to beat cars off the line, drag racing or anything like that, it may not be something that will be right for you. Less mass makes less power at launch, from my understanding most drag cars have heavy flywheels. (I could be wrong about that btw). Anyway good luck in whatever you decide to do.

[InsanityInc]

Less mass makes less power at launch, from my understanding most drag cars have heavy flywheels. (I could be wrong about that btw). Anyway good luck in whatever you decide to do.

Less mass always means more power to the wheels because it takes less power to turn a lighter component at any given RPM. However, a lightened flywheel can make it harder to launch the car since when you rev the engine with the clutch disengaged, the engine will have less inertia at any given RPM, so when you dump the clutch it's harder to break the wheels loose.

[colies97~240sx]

thx for the clarification, i knew it was something like that, just had it a bit backwards.

[naed240sx]

whenever you drive uphill, you loose gas milage and overall momentum of the motor.

um, I dont think that this is true. The less weight your engine has to push around the better, sure it may go up a hill a bit more with a heavier flywheel, but overall, the car will be doing less work to increase revs during any other kind of driving. So according to your reasoning, a heavier car will get better gas mileage uphill? Like if i go driving in the mountains, should I drop a couple lead bricks in the back to get better mpg?

[InsanityInc]

um, I dont think that this is true. The less weight your engine has to push around the better, sure it may go up a hill a bit more with a heavier flywheel, but overall, the car will be doing less work to increase revs during any other kind of driving. So according to your reasoning, a heavier car will get better gas mileage uphill? Like if i go driving in the mountains, should I drop a couple lead bricks in the back to get better mpg?

Well, what he said is almost true. If you try coasting uphill you'll go further with a heavier flywheel, since the driveline has more inertia, and you'll get a bit further without needing to give it as much gas, but if it's a hill that requires more throttle with either flywheel, the lighter one is going to win out since as you said there's more power to the wheels.

[Kenrik]

ok makes sence i'm not doing much drag racing I just do very hard street driving I was going to go KA-T but after the mods I have done to my car I have so much power and i'm using it in a way... that I feel if I had 300hp or so I would just get myself into trouble (or killed) LOL If it would make my day to day driving better then it sounds like it would be worth it for me.

[Chiefgmsr]

I don't think its that big of a difference. I have a lightened flywheel, alum driveshaft. My car can still roll in 1st and 2nd gear w/o gas or clutch. It's not that hard to divert from flywheel to flywheel. If you can drive stick you'll be ok.