Originally Posted by climb_on
I guess zm2-hdss and 1.8 flywheel is the clear choice,
unless someone talks me out of it.
price wise i think i found 390 shipped the cheapest, anyone can beat that???
The 1.8 setup is the safe way to go. Apparently there are many many people who have used it successfully.
I sound like a broken record and have posted this on four different forums with the same responses but here goes again.....
The lowest rotating mass (flywheel) is good for acceleration, reduces stress on the driveline and reduces vehicle total weight. It also reduces the inertial load that the clutch has to hold.
The only bad that I've encountered is launching a low tq vehicle with very sticky tires. I had Mickey Thompson slicks on my RX-7, with 200whp NA, 2420lbs going down the track, I actually bogged launching on the rev limiter at 9300rpms. A heavy flywheel would have taken care of this. That is the only instance in 21 years of running an aluminum flywheel as a daily driver/fun car that I wished I had a heavier flywheel.
I don't want to guarantee that this will work for anyone else, this is just my one data point but I've run the 1.6 Fidanza aluminum flywheel and the Exedy stage 1 (just one step above stock) for about 20k miles, half of that boosted. All of it with heavy R compound autox and dragstrip use. It doesn't hit hard but it doesn't slip. I think on the 1/4 mile vid I may have had a tiny chirp going into 3rd gear so it hits plenty hard for me.
Having broken u-joints and snapping a trans input shaft in the past, I'm a big fan of reducing driveline shock.
I admit that when it comes time to rebuild the motor I'm going to put in a higher clamping force pressure plate and a slightly more aggressive clutch (unsprung marcel but sprung hub and still organic). I'm hoping to up the power significantly.