Recently I got very little life out of one my clutches, so wanted to see how much mileage I got out of each of them over the years. Both cars are daily driven (mostly on drag radials), and I race them at the drag strip regularly. They are basic upper pulley-only cars, ~450/450.
vert - brand/mileage/power & tires/# of drag races
coupe - brand/mileage/power & tires/# of drag races
My takeaway is you can’t beat the longevity of the stock clutch… as long as you're on the stock power level & tires. (In fact I think that hotcobra03 did not have to change his until 354K iirc!) And since I ate through my most recent RST very fast, I think the organic lining does not like the weight of the cars, but I am not dismissing the possibility of using the stock pivot ball as being a contributing factor. So next I will go back to either the RXT or try out their Kevlar discs. Also, the Ram HD proved to be a good performer, but ever since I went to the twin-disc setups I've been hooked on their incredibly light pedal-feel.
FWIW -
vert - brand/mileage/power & tires/# of drag races
- Stock Ford/45k/stock, stock/54
- Centerforce DFX/18k/stock, dr’s/7
- Ram HD/28k/pulley, dr’s/12
- Ram HD/18k/pulley, dr’s/10
- McLeod RXT/10k/pulley, dr’s/6
- Centerforce DFX/18k/stock, dr’s/7
- Ram HD/28k/pulley, dr’s/12
- Ram HD/18k/pulley, dr’s/10
- McLeod RXT/10k/pulley, dr’s/6
coupe - brand/mileage/power & tires/# of drag races
- Stock Ford/30k/pulley, dr’s/6 (10k of this was stock, no racing)
- McLeod RXT/14k/pulley, dr’s/9
- McLeod RST/8k/pulley, dr’s/3
- McLeod RXT/14k/pulley, dr’s/9
- McLeod RST/8k/pulley, dr’s/3
My takeaway is you can’t beat the longevity of the stock clutch… as long as you're on the stock power level & tires. (In fact I think that hotcobra03 did not have to change his until 354K iirc!) And since I ate through my most recent RST very fast, I think the organic lining does not like the weight of the cars, but I am not dismissing the possibility of using the stock pivot ball as being a contributing factor. So next I will go back to either the RXT or try out their Kevlar discs. Also, the Ram HD proved to be a good performer, but ever since I went to the twin-disc setups I've been hooked on their incredibly light pedal-feel.
FWIW -