# Fidanza or any other Aluminum Flywheels

**URL:** <https://forums.speedlife.net/t/fidanza-or-any-other-aluminum-flywheels/138312>\
**Category:** Canada Nissan Automotive\
**Created:** [February 5, 2005, 11:36pm UTC](https://forums.speedlife.net/t/fidanza-or-any-other-aluminum-flywheels/138312 "2005-02-05T23:36:47Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![boost\_infested](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/boost_infested/32/5496_2.png) [@boost\_infested](https://forums.speedlife.net/u/boost_infested)\
**Post date:** [February 5, 2005, 11:36pm UTC](https://forums.speedlife.net/t/fidanza-or-any-other-aluminum-flywheels/138312/1 "2005-02-05T23:36:47Z")

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I need your input on this.

pros:

- less rotating mass
- revs faster
- turbo spools faster

cons:

- installing a flywheel allows your car to rev faster but the downside is that the revs fall just as fast. You need to be lightning quick with your shifts from now on, so keep at it!

any experience with a aluminum flywheel?

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**Author:** ![1GAlty](https://avatars.discourse-cdn.com/v4/letter/1/a9adbd/32.png) [@1GAlty](https://forums.speedlife.net/u/1GAlty)\
**Post date:** [February 6, 2005, 7:44pm UTC](https://forums.speedlife.net/t/fidanza-or-any-other-aluminum-flywheels/138312/2 "2005-02-06T19:44:56Z")

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A lightened flywheel is a great upgrade. More power to accelerating the car instead of accelerating the flywheel. Easier to match revs when double-clutching. Hurts gas mileage when highway cruising, but actually saves gas in stop and go city driving.

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**Author:** ![Nis240](https://avatars.discourse-cdn.com/v4/letter/n/a9a28c/32.png) [@Nis240](https://forums.speedlife.net/u/Nis240)\
**Post date:** [February 6, 2005, 9:11pm UTC](https://forums.speedlife.net/t/fidanza-or-any-other-aluminum-flywheels/138312/3 "2005-02-06T21:11:09Z")

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> [@1GAlty](#):
>
> Hurts gas mileage when highway cruising.

Really?

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**Author:** ![1GAlty](https://avatars.discourse-cdn.com/v4/letter/1/a9adbd/32.png) [@1GAlty](https://forums.speedlife.net/u/1GAlty)\
**Post date:** [February 8, 2005, 1:02am UTC](https://forums.speedlife.net/t/fidanza-or-any-other-aluminum-flywheels/138312/4 "2005-02-08T01:02:01Z")

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Really! A flywheel is an energy storage device. How much energy is stored depends on its weight and how fast it is spinning.

At 0 rpm, a flywheel stores zero energy regardless of weight. At city speeds, revs are low so the difference in the amount of energy stored by a heavy flywheel vs. a light flywheel is low. Also wind and rolling resistance is low, so there is less need to use the energy stored in the flywheel. You save gas because you are not wasting energy accelerating the flywheel only to have it slow down again at the next red light.

At highway speeds, revs are high so the heavy flywheel stores a lot more energy than the light one. With a heavy flywheel, you could ease off the gas a little and let the energy in the flywheel pull you along. The light flywheel does not store enough energy to overcome wind and rolling resistance so speed bleeds off rapidly. That is why highway mileage suffers with a light flywheel vs. a heavy one.

Sorry about the :rant:

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**Author:** ![aerocabin](https://avatars.discourse-cdn.com/v4/letter/a/e19adc/32.png) [@aerocabin](https://forums.speedlife.net/u/aerocabin)\
**Post date:** [February 8, 2005, 10:28pm UTC](https://forums.speedlife.net/t/fidanza-or-any-other-aluminum-flywheels/138312/5 "2005-02-08T22:28:57Z")

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I have a Fidanza on my Cressida, I think it’s great. It revs to redline from idle so fast in neutral, I hope to compliment the setup with electric fans soon. 🙂