flywheel question/s4
 

hey i have been looking around for some info and wanted to know if any one here could answer my question,if i have an s4 na motor and wanted to put a s4 t2 trans on it can i use a stock s4 turbo flywheel on it rather than using a lightweight...i looked and it seems like the front /rear counterweights are only year specific ex. 86-88/89-95 not year and turbo/non-turbo,i'm thinking due to the rotor weights...also when you put lightweight one on you use a na rear counter so i'm thinking i could do the same but wanted to know if any one has done it without any vibrations or future engine failures???thanks

You can use a stock S4 TII flywheel on your S4 NA engine. The counterweight is integrated into the manual flywheels, and it is year specific. Turbo vs. NA doesn't matter.

When using lightweight flywheels, you need the auto counterweight (which is separate from an auto flywheel) from the same series as your engine.

so can we use S4 turbo lightweight Flywheel (For example a ACT lightweight Flywheel for the Trubo 2 application) on an S4 N/A engine also as long as we have the auto counterweight? or dose it only apply to the Stock S4 T2 Flywheel

Yes you use the ACT flywheel and a S4 automatic counterweight.