Join Date: Jul 2017
Location: Nobel Ontario Canada
Bullitt Year: 08
Bullitt Color: DHG
Bullitt Serialized Number: 4404
A twin disc clutch?
In days past a single disc clutch was the norm in production vehicles. You have the flywheel, a two sided friction disc, and a spring loaded pressure plate. When you push the clutch in, the pressure plate springs release allowing the friction disc to "free wheel," and allow for smooth gear changes.
Once you get up around 500 Hp and over 400 Ft/Lbs of torque, a normal single disc clutch will have a hard time connecting up the power to the transmission under hard use. This will cause slipping, heat, and premature clutch failure.
A twin disc clutch has a flywheel, a friction disc, an intermediate metal plate, pinned to the flywheel, another friction disc and the pressure plate. When you stack them all up under pressure, they can take a lot more power transfer. Some people take a while to get used to the clutch action, as a twin disc set up tends to "hook up" with greater intensity.
The other issue is that with all this power engaging like right now you add stress to the gear box and other drive line components. I would say the weakest links are the CV joints in the half shafts. With a hard start in first gear on sticky tires, you could be applying over +3000 Ft/Lbs of torque to the axles. And, they will fail.
So be kind to your drive train and go easy on first gear launches, unless you are drag racing. Then I recommend the FP HD axles and a center differential bracing kit. Shift well my friends.
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In my defense, I was left unsupervised.