I am deciding between these two clutches, besides the difference in increase of tq capacity what else are the differences? also anyone running one these kits, if so what are your opinions?

Stage 3 - IronMan Street/Strip Series 1680 Clutch Kit
Offers 175% increase in torque capacity.

Stage 4 - Strip Series 1620 Clutch Kit
provides 250% increase in torque capacity.

 

I have stage 4 w their lightweight flywheel.

background: my s is basically my daily driver. I had driven a puck clutch only one time (for about 10 minutes) prior to having this clutch in my car.

It took about a week to get use to. Instead of having l--------l time/pedal travel to ease in to the clutch, you have l-l time/pedal travel. Once you get use to moving your leg in much smaller increments, you will be fine. Pedal pressure isn't that much, if any, heavier than stock, imo.

If you aren't going to make a ton of torque, you may not want to make it this undriveable for other people. That is where the real fun/problems come in.

I have put almost 20k miles on this setup since last June.

 

I have a stage 5, just like the other, pedal feels a little lighter than stock, travel is a little smaller, and the engagement isn't too bad. It's a bit rough for people that are not use to it but once you've driven on it a few times, you get use to it and don't even notice.

 

thanks for your opinions on these two clutches, i have drivin my friends 8th gen civic si which is a 6puck and it didnt seem bad at all, i guess what i really wanna know is there a big difference between the time/pedal travel of these two clutches? or are they going to feel basically the same

 

I had 1620, its alright for a daily driver. You get used to the on/off thing pretty fast.
Only problem I had with it was the puck disc starting to break apart in a few places on the pads, twice. I only knew because I had the motor out 2x in 20k miles for other reasons. Never slipped one bit though.