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Benefits Of A Lightweight Flywheel #32160 Jul 31, 8:34am Jul 31, 8:34am
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NorCal, Bay Area
JAIMEJAMES OP
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2000 Toyota Celica
JAIMEJAMES OP
Senior Member
2000 Toyota Celica

Joined: Mar 2003
Posts: 699
NorCal, Bay Area
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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Re: Benefits Of A Lightweight Flywheel [Re: JAIMEJAMES] #32161 Jul 31, 1:05pm Jul 31, 1:05pm
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Steven
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what about the disadvantages like those asscociated with daily driving?

Re: Benefits Of A Lightweight Flywheel [Re: Steven] #32162 Jul 31, 2:58pm Jul 31, 2:58pm
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Originally Posted by Steven
what about the disadvantages like those asscociated with daily driving?


Yeah, lets here that side.

Re: Benefits Of A Lightweight Flywheel [Re: JAIMEJAMES] #32163 Jul 31, 3:12pm Jul 31, 3:12pm
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JAIMEJAMES OP
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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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Re: Benefits Of A Lightweight Flywheel [Re: JAIMEJAMES] #32164 Aug 1, 2:44am Aug 1, 2:44am
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good post

Re: Benefits Of A Lightweight Flywheel [Re: JAIMEJAMES] #32165 Aug 1, 1:06pm Aug 1, 1:06pm
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Steven
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Steven
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excellent info JAIMEJAMES

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

Re: Benefits Of A Lightweight Flywheel [Re: JAIMEJAMES] #32166 Aug 2, 8:50am Aug 2, 8:50am
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Raleigh & Charlotte, NC
MxReb0
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Interesting


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Re: Benefits Of A Lightweight Flywheel [Re: JAIMEJAMES] #32167 Aug 3, 11:00am Aug 3, 11:00am
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sweet thumbsup thumbsup


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Re: Benefits Of A Lightweight Flywheel [Re: Steven] #32168 Aug 4, 10:01am Aug 4, 10:01am
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NorCal, Bay Area
JAIMEJAMES OP
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JAIMEJAMES OP
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Posts: 699
NorCal, Bay Area
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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