> Pieces of exploding clutches go through the aluminum bell housing and the
> body tin like they aren't even there. Everyone racing one of these cars
> uses a diaphragm style clutch, and some racing venues other than
> sports car
> racing even outlaw finger type clutches. So if you are ever going to
> autocross your car and plan to use rpm of 5000 or 6000, using the finger
> type clutch is a gamble.
See ? I told you it was dangerous to disagree with Jack !
But I've driven some 300,000 miles with the 3A clutch, generally shifting
around 5500 rpm and doing some fairly lengthy runs (hours) at over 4500.
Even took 1st in class at the only autocross I've ever run. Never, ever had
a problem with the pressure plate.
Seems odd too that Kastner never mentioned this problem, even in his latest
Comp Prep book. He even suggests using the earlier, lighter flywheel. You
can even buy aluminum flywheels drilled for the earlier clutch.
Centrifugal force goes up with the square of rpm, which is why it's so
dangerous to not use a scatter shield when you turn 7 grand or more.
Randall
Check out the new British Cars Forum:
http://www.team.net/the-local/tiki-view_forum.php?forumId=8
|