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JAIMEJAMES
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JAIMEJAMES

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2000 Toyota Celica

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Posts: 699
NorCal, Bay Area
Jul 31, 9:34am - #32160 
Benefits Of A Lightweight Flywheel

Typical benefits of a lightweight flywheel:

There are significant benefits of an aluminum flywheel. Though a lightweight flywheel does not create additional horsepower, it does allow the engine to more rapidly transfer its power to the drive train. A lightweight flywheel allows an engine to have quicker throttle response due to its reduced mass. By reducing rotating mass, the engine revs quicker under acceleration. Conversely, under a drop throttle condition, the car will slow down quicker due to less rotational mass (inertia) at the crank.

Reduced mass equals increased acceleration.

A lightweight flywheel works particularly well with turbo-charged engines because it reduces typical turbo "lag".

Increased supercharger efficiency due to less parasitic drag on the crank

Improved mid-range torque in a normally aspirated engine due to not having to overcome the heavy weight of a stock flywheel.


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Steven
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Steven
2001 Spectra Blue Mica Toyota Celica GTS
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Jul 31, 2:05pm - #32161 
what about the disadvantages like those asscociated with daily driving?

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Gen7fan
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2003 silver streak Toyota Celica GT
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Maryland
Jul 31, 3:58pm - #32162 
Originally Posted by Steven
what about the disadvantages like those asscociated with daily driving?


Yeah, lets here that side.

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JAIMEJAMES
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JAIMEJAMES

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2000 Toyota Celica

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NorCal, Bay Area
Jul 31, 4:12pm - #32163 
DISADVANTAGES:

Well, you accelerate a little faster due to less rotational mass, but let's say when you approach a hill at a constant speed, the hill should theoretically slow you down faster...but it won't.

So, downsides are that it is easier to stall the car and that the gearbox becomes a tad noisier, due to less mass = less damping. So, you'd have to up the idle speed to prevent continuous stalls.

The transmission gets more wear and tear because the peak torque is higher as the damping action of the mass is lost.

The notable downside would be a reduction in fuel economy, also.

So, you don't necessarily want to go too light unless your application is for drag.


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superlemon000
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superlemon000
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Southern California
Aug 1, 3:44am - #32164 
good post

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Steven
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Steven
2001 Spectra Blue Mica Toyota Celica GTS
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Riverside, CA
Aug 1, 2:06pm - #32165 
excellent info JAIMEJAMES

I have 1 question, is it true that it is harder to stay in lift with a LWF?

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MxReb0
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MxReb0

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2000 Toyota Celica

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Raleigh & Charlotte, NC
Aug 2, 9:50am - #32166 
Interesting


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VSGTS14
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Aug 3, 12:00pm - #32167 
sweet thumbsup thumbsup


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JAIMEJAMES
Senior Member
JAIMEJAMES

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2000 Toyota Celica

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Posts: 699
NorCal, Bay Area
Aug 4, 11:01am - #32168 
Originally Posted by Steven
excellent info JAIMEJAMES

I have 1 question, is it true that it is harder to stay in lift with a LWF?


personally, i couldn't verify that (although i have the TRD jdm clutch i have yet to get a lightweight flywheel to match). the clutch would not have anything to do with lift since "lift" is related to your valvetrain. logically, you would just experience lift much sooner. thumbsup


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