lightweight flywheel
07-31-14, 05:28 PM
#1
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lightweight flywheel
Hey guys I am looking into putting a light flywheel into my fc with a more aggressive clutch I was reading on racing beat that light flywheel requires a counterweight to maintain engine balance RB has them for 161 bucks does anyone know of a lighter flywheel that comes with a counterweight or am I just going to have to bite the bullet? Let me know
Steven
Steven
07-31-14, 08:55 PM
#2
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Look for an auto counterweight from the same type vehicle as your car is (aka, look for an S4 N/A counterweight if you've got an S4 N/A, or an S5 T2 cw if you've got an s5 t2..). The factory flywheel is already weighted to balance the rotors of your engine, if you remove that (balanced) flywheel you need to add an appropriate counterweight to balance it out.
*If* you're running a hybrid motor (example: I'm running S4 NA rotors in my S6 13B-REW engine) then go with front/rear counterweights that balance/match the rotors you're using.
I picked up my S4 N/A counterweights from Speed1 for a very reasonable price.
*If* you're running a hybrid motor (example: I'm running S4 NA rotors in my S6 13B-REW engine) then go with front/rear counterweights that balance/match the rotors you're using.
I picked up my S4 N/A counterweights from Speed1 for a very reasonable price.
08-01-14, 12:06 AM
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Yep,all light flywheels are just that..A Flywheel..nothing else.
The OLD stock flywheel has/had the Counterweight built in the casting so you don't see it.,but it is there.Sort of why it is heavier than the lighter version..lol!
The AUTO Flexplate uses the separate counterweight.
So..Really think of the Light flywheel as a "auto style" flywheel..it NEEDS the separate counterweight for that particular engine.
Guys are selling CW's on here all the time and also you can pick thenm up on Ebay.
Unless you like BLING,then get new.
But honestly the NEW counterweight and the Used one just do exactly the same thing,and it won't even be shown in a Car show,so people won't rag on ya for buying used!..so save your money..lol!
The OLD stock flywheel has/had the Counterweight built in the casting so you don't see it.,but it is there.Sort of why it is heavier than the lighter version..lol!
The AUTO Flexplate uses the separate counterweight.
So..Really think of the Light flywheel as a "auto style" flywheel..it NEEDS the separate counterweight for that particular engine.
Guys are selling CW's on here all the time and also you can pick thenm up on Ebay.
Unless you like BLING,then get new.
But honestly the NEW counterweight and the Used one just do exactly the same thing,and it won't even be shown in a Car show,so people won't rag on ya for buying used!..so save your money..lol!
08-01-14, 02:11 AM
#4
talking head
s4 is s4 and s5 is s5
and NA and turbo do not come into the equation.. they use the same part
ie.. a s4 NA mass is identical part number to a s4 turbo auto mass
and NA and turbo do not come into the equation.. they use the same part
ie.. a s4 NA mass is identical part number to a s4 turbo auto mass
08-01-14, 08:32 AM
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Okay so there is no way around that or flywheels and counterweight sold as like a package deal haha, I definitely don't want my car to be "half assed" just wanted to know if there is a cheaper option out there
08-01-14, 08:50 AM
#6
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Neglecting to use an auto counterweight with a lightened flywheel wouldn't count as "half assed... it would fall under the category of "completely fucked" and I doubt the engine would even last long enough to spend the money on gas that you'd save on not getting the CW 
08-01-14, 08:58 AM
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Rotor chart: http://www.mazdatrix.com/faq/rotorwgt.htm
CW guide: http://www.mazdatrix.com/faq/Rcounterweights.htm
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08-01-14, 10:30 AM
#8
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Neglecting to use an auto counterweight with a lightened flywheel wouldn't count as "half assed... it would fall under the category of "completely fucked" and I doubt the engine would even last long enough to spend the money on gas that you'd save on not getting the CW
08-01-14, 11:34 AM
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Well Actually,you would Really have a Hard time attaching the Light Flywheel to the back of the engine as it attaches to the Counterweight.
It can't attach to the ESHAFT or anything really without it.
So..ya..you would "really..REALLY" need the Counterweight..(chuckle!)
It can't attach to the ESHAFT or anything really without it.
So..ya..you would "really..REALLY" need the Counterweight..(chuckle!)
08-02-14, 11:13 PM
#11
talking head
it really is a win win situation.. the CW allows you to easily remove the FW later for service/machining
the new billet FW can be machined almost indefinitely without seriously affecting its internal balance
good ones have weight removed from the outside edge.. and a lazer cut integral ring gear
to show that some retailers know a bit of science and understand moments of inertia
the new billet flywheel is a huge change in the rate the engine revs up ( and down ) but best of all .. it is new.. and billet..
and a far safer alternative than a cast lump that has been machined and overheated beyond a safe level to use
( and often at doubled HP when the engine or turbo is modified )
just be sure you ID your rotors
( s4 or s5/FD .. s5 and FD being machined grooved through the bathtubs )
so that you get the right auto CW to keep everything balanced
the new billet FW can be machined almost indefinitely without seriously affecting its internal balance
good ones have weight removed from the outside edge.. and a lazer cut integral ring gear
to show that some retailers know a bit of science and understand moments of inertia
the new billet flywheel is a huge change in the rate the engine revs up ( and down ) but best of all .. it is new.. and billet..
and a far safer alternative than a cast lump that has been machined and overheated beyond a safe level to use
( and often at doubled HP when the engine or turbo is modified )
just be sure you ID your rotors
( s4 or s5/FD .. s5 and FD being machined grooved through the bathtubs )
so that you get the right auto CW to keep everything balanced
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