Once you start modifying your vehicle for more power and performance, your stock clutch
will eventually not have enough clamping force, causing your clutch to slip.
Choosing the correct performance clutch for your combination will ensure you get all that
power to the rear wheels.
Knowing how you use and drive your vehicle will help point us in the right direction
when it comes to choosing a clutch.
To handle more power and performance, clutch manufacturers choose different clutch materials
along with different pressure plate combinations.
Some clutch disc materials are more forgiving and engage smoothly while others are able
to absorb more heat and live under extreme conditions but can induce chatter on everyday
street use.
Pressure plates are also available in diaphragm, borg and beck, and long style depending on
the application.
Diaphragm style pressure plates typically offer lighter pedal pressure making them very
street friendly while borg and beck along with the long style pressure plates have increased
pedal effort.
Let's go through some of the other factors that need to be taken into account when choosing
a performance clutch.
Many older cars are very heavy and have engines that produce high torque numbers at lower
engine speeds.
This creates a high load situation on the clutch that can result in a slipping, overheating
clutch if the wrong clutch is selected.
The heavier the vehicle the vehicle, the higher the load on the clutch and the more clamp
pressure needed to move the vehicle.
Knowing how much horsepower and torque will give you a good idea of what clutch is needed
for your application.
High torque, low RPM applications will require higher clamp pressures, while lower torque,
high RPM applications will require lighter clamp pressures.
High rear end gearing puts heavier loads on the clutch system as well.
If you've ever let off the clutch from second gear, you probably ended up bogging the engine.
This situation also requires the clutch to be slipped more on take off to make a smooth
transition resulting in accelerated wear to the clutch.
Tires with more traction such as drag radials or slicks allow the vehicle to hook up harder
and are less likely to spin than street tires.
When a tire spins, the load on the driveline is decreased.
When the tire hooks up, the load on the clutch is increased substantially, requiring more
clamp pressure.
The intended use of the vehicle when choosing a clutch is the most important consideration.
Clutch kits are available for street performance to all-out racing and everything in between
so be sure to choose the right clutch for your driving style.
Let's go through the variety of clutch choices Hays offers.
Hays classic clutch kits are the original Hays clutch.
For clutch kits that are street friendly, smooth and reliable, look for the Hays classic
line of clutches.
Hays classic clutch kits feature an organic disk with an upgraded pressure plate for increased
holding power over stock.
Hays classic line of clutches are designed for stock cars and trucks or ones with minor
performance bolt-ons such as headers, intake, and exhaust.
They're a great choice for muscle cars.
Hays street 450 clutch kits are an excellent performance upgrade from your stock clutch.
Engines with mild modifications work well with these clutch kits.
These clutch kits are designed to handle stock or mildly modified engines up to 450 horsepower.
It is a great clutch where drivability is still the most important factor.
It features upgraded damper springs for smooth, chatter-free operation.
It offers 30% more clamping force than a stock clutch, allowing you to put more power to
the ground.
The organic composite disk allows for smooth, no chatter engagement.
This disk friction material is bonded to a steel vacuum plate that increases heat dissipation
and provides excellent structural strength for higher RPM use.
For mildly modified vehicles and stock clutch replacements, the Hays street 450 clutch kits
are a great choice.
Hays street 650 clutch kits are designed to handle highly modified engines up to 650 naturally
aspirated horsepower.
These are true street and strip clutches for spirited, high-performance driving, or frequent
track use.
The high-performance disk utilizing the street 650 has and 8 spring hub with encapsulated
damper springs and a centered metallic friction surface.
This disk does a great job of dissipating heat and fighting the slippage found in organic
disks.
The encapsulated spring can handle three times the shock load versus a standard coil spring.
Centered metallic material provides a degree of slippage on the vehicle launch to offer
a smoother engagement characteristic found in street style clutches.
If you visit the track often the Hays 650 clutch kits are for you.
Our top of the line performance clutch is our Hays dragon claw clutches.
These clutch kits give you race clutch performance with the drivability of a street clutch.
They feature lightweight construction.
The pressure plate cover is forged from 70-75 T-6 grade aluminum and the matching lightweight
flywheel is forged from 60-61 T-6 grade aluminum.
The entire dual disk assembly weighs as little as 35 pounds and the single disk assembly
weighs 28 pounds, making them quite a bit lighter than most stock and many aftermarket
stock setups.
These can withstand the high torque produced from forced induction engines and survive
extreme racing without the required additional pedal effort.
Dual disk kits can handle up to 1100 foot-pounds of torque utilizing a diaphragm style pressure
plate in combination with lever assist technology, the diaphragm plate offers street style pedal
feel with the holding power of race clutch.
With a unique lever assist design, as RPMs increase, the centrifugal force swings the
levers outwards, multiplying the holding pressure applied to the clutch plate.
This results in the clamping force that holds under extreme conditions.
Dragon Claw clutch kits include matching lightweight aluminum flywheels so you're getting a complete
engineered clutch package.
These work great on daily driven turbo and supercharged combinations.
Dragon Claw is a great choice if you want stock pedal feel but want upgraded holding
power offered with its lever assist technology, perfect for the street or track.
Make sure you get all the power to the ground with a Hays clutch kit.
Thanks for watching, for more information on Hays clutches and accessories, visit our
website at HaysClutches.com