Clutch Question

[Kraelic]

I am sourcing up some parts to go with my CA18DET clip as it is an automatic. I have located an S12 CA20 bellhousing and a KA manual transmission. For the clutch I am currently considering a SPEC level 2 plus or maybe going with the 3 plus. If your goal was around 270 ft/lbs (maybe a bit optimistic?) would you want a clutch that holds 330 ft/lbs to use about 80% capacity or go for the 450 ft/lbs at 60% capacity. Or is my thinking in regards to clutch durability offbase here?

Still looking around for some options on a flywheel also and then there's the need for manual bolts instead of the automatics. I think the FSM shows the manual bolts are longer usually.

[float_6969]

SPEC clutches have a VERY light pedal feel, even with their heavy duty clutches. I would go for the heaviest sprung clutch that's w/in reason.

[mikesim]

whoa, float, i thought Dee said that heavy pressure plates tend to spin bearings because the amount of pressure it puts on the crank.

i would say that only go for what you plan on making. 300-350 ft lbs for making 270 at the flywheel is good enough. it's not going to last any longer if you get a 450 ft lb holding capacity.

[boost_boy]

whoa, float, i thought Dee said that heavy pressure plates tend to spin bearings because the amount of pressure it puts on the crank.

i would say that only go for what you plan on making. 300-350 ft lbs for making 270 at the flywheel is good enough. it's not going to last any longer if you get a 450 ft lb holding capacity.

Whoa, based on my past experience and quoting my machinist, I made a comment similar to what you said. But in reality, as long as your bearings are up to the task (meaning they are not already worn), I truly do believe you can use a heavy duty clutch set-up. However, even with the hyudraulics it can be a little rough on the clutch leg. So float is right in the fact that as long as it's hub is sprung, you can get the good stuff and still enjoy it.

Dee