Is it worth changing the flywheel on the cobalt ss /Sc?

how much gain should I get?

 

I don't know if you get gains, but i am sure a lightened flywheel will allow the car to rev quicker. The only downside to this is the RPM's drop quicker during shifts as well.

 

It is a great idea to switch to a lightweight flywheel, the car's rpms will rev higher and drop faster, your car will feel completely different, it would also be a good idea to do a clutch while your down there too, i had a fidanza flywheel on my car it made a worl of differnce, try using the search button also, as there is many posts on this.

 

how about getting the stock flywheel machined?, a friend that builds cars for a living said it yields the same results...

 

no. because you are not getting a "lightweight" flywheel. that is what yeilds the quicker revs. machining the stock flywheel is appropriate when you replace the clutch and do not want to purchase a new flywheel.

 

so machining it is a must when you change your clutch?

 

i hear that the heavier the fly wheel the more torque.....lighter the flywheel less torque....is this true? a teacher @ my school told me this

 

ok hopefully someone can answer this for me because i keep trying to figure it out and am trying to learn...


when installing a light flywheel Why is it important to install a better clutch at the same time?????

please someone give an informative answer to this.... i know im not the only person wondering....

 

seems backwards to me - heavier flywheel would eat up more tq AFAIK....

 

If you change the flywheel to a lighter one, you will be altering the mass elastic system of the crank. The damper on the crank is tuned based on the flywheel inertia, crank inertia, cyliner pressures, etc. By altering the mass elastic system and the damper being tuned to the inappropriate frequency, the amplitudes of the crank's torsional vibrations will increase and potentially cause fatigue and failure to the crank and the mains. If you want to change the flywheel, you should have the system retuned and get a new damper, which is not very easy and will be very expensive...just my $0.02 (I design torsional dampers for cranks).

 

What he said. The weight of the flywheel gives the crankshaft inertia to move the pistons through the exhaust stroke and keeps the crankshaft moving at a steady pace rather the slowing down between power strokes and speeding up during power strokes.

 

thats assuming that applys to Externally balanced engines. Im still learning about the LSJ motors yet but from when I had my 2.4 LD9 cavalier the motor itself was internally balanced so that wouldnt apply. So Unless the LSJ motor is externally balanced what your saying wouldnt apply. dont qoute me wrong cause Im not saying im right Im just stating my knowledge that ive aquired over the years of working on cars.

 

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The engine will rev much faster with the aluminum flywheel, offering better throttle responce and more power.

We have one (1) 2.0L Fidanza flywheel for only $289.99 + ship (email or PM us for the discount code) We again will only offer this price for one unit.

 

I have a stage 4 4 puck clutch and fidanza flywheel in my car and all i can say is WOW!! The car feels totaly different. You will notice a diff right away!

 

what kind of difference?

 

Much faster rev, smother eceleration, and power gain in all rpm's. Only down side is 1st gear. Its bad enough as it is and now its that much worse but you make up for it in 2nd and 3rd. Trust me.lol

 

EXIGED,
the reason you would need a better clutch is for more clamping force....since the revs will be quicker, you need to "grab" the flywheel with more pressure. the factory pressure plate isnt worth having off the showroom, much less with mods. hope this helps ya.

 

thanks for the quality info everyone!



but does anybody know if the L61 (i believe thats what its called.... the 2.2l) is internally or externally balanced, where that would be a concern?

 

all three components are individually balanced (flywheel, crankshaft, and damper).