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Sr20det S14 - Lightweight flywheel, a good option?
Posted: Tue Nov 02, 2010 9:25 am
by Efini-Boy
Hi, I'm replacing my Sr20det clutch with a stage 2 clutch, while I'm at it, I can replace the flywheel with a lightweight chromolly flywheel, is this a good option? or better to keep the heavy stock?
What are the positive and negative points in doing this mod?
Posted: Tue Nov 02, 2010 10:04 am
by thekoukimonster
Im curently running a Fidanza light weight flywheel,
but in my opinion it is one big waste of money
.
They say a light weight flywheel helps with acceleration, but i cant feel the difference.
You loose a big chunk of Torq low down with the lighter weight, it becomes very tardy,lazy of the line
Next time im changing clutch etc, im putting the std flywheel back
.
any other oppinions
Posted: Tue Nov 02, 2010 12:09 pm
by aep886
all i did was skim the flywheel... it cost R170 and it lighten by 3kg
Posted: Tue Nov 02, 2010 1:35 pm
by Efini-Boy
cool, then I'll rather stick with the standard
How did it effect you aep886?
Don't you mess up the ballance of the motor when you make the one end lighter?
Posted: Tue Nov 02, 2010 2:36 pm
by thekoukimonster
My crank with light flywheel and front pully was all balanced together, during rebuild
.
std turbo. light weight flywheel ok
if
bigger turbo for example t3/t4 and light weight flywheel a big NO NO
Posted: Wed Nov 03, 2010 9:25 am
by aep886
Efini-Boy wrote:cool, then I'll rather stick with the standard
How did it effect you aep886?
Don't you mess up the ballance of the motor when you make the one end lighter?
i still have to dyno the car before i tell you anything ok...
coz the car is not running 100% yet
Posted: Wed Nov 03, 2010 9:47 am
by Guy
thekoukimonster wrote:
if
bigger turbo for example t3/t4 and light weight flywheel a big NO NO
Why?
Posted: Wed Nov 03, 2010 10:47 am
by thekoukimonster
The bigger turbo, takes a bit longer to spool up, so lowdown no power, because of no boost yet, and now you add a lighter flywheel, it diminishes the torq even more lowdown !!.
Currently im running a t3/t4 tubonetics ballbearing turbo, making 265rwkw at 1.2 bar boost, so it surely fly, but up to 3500rpm, the torq of a std s14 sr20det, is way supperior, im only making 203nm(at 3500rpm), a std one makes about 200nm already at 2300rpm !!.
And im not using the variable valve timing anymore, 264 degree cams.
But then again, maybe it is my compression 8.2:1