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The RAM Street Dual is designed to be a street
clutch system for mid to high horsepower cars (450-1000 horsepower).
STREET DRIVING
Use your RAM Street Dual on the street just as
you would any other clutch. You will notice a slight rattle at idle with the
clutch pedal pushed in. This is normal for a multiple disc clutch system that
drives the floater plate off the clutch stands. If you are sitting for extended
periods, simply take the car out of gear and this noise will not be present.
DRAG STRIP USE
To maximize the life of your RAM Dual, it is
imperative that you follow these guidelines:
- Burnouts – make sure the tires are
completely in the water before starting. Do not burn out through the water;
once the tires start to grab, push in the clutch or this will dramatically
load the clutch system and reduce life. Remember that the rubber around the
burnout box and starting line is the stickiest part of the race track!
- Launching – make sure the car is in first
gear before staging. Leaving in the wrong gear will destroy any clutch
system. Do not leave in a higher gear in attempt to avoid tire spin – this
will damage or destroy the clutch system.
- Shifting – missing shifts will result in
over reving and can cause damage to the retaining straps in the cover,
possibly bending them and causing non-release.
- At the finish – make sure to disengage the
clutch at the finish line. Do not allow the engine to decelerate in gear as
this loads the clutch straps in reverse and can bend the straps.
- Hot lapping – hot lapping the car and not
allowing sufficient time for the clutch to cool between runs and can cause
premature slippage. Focus on making quality runs, not quantity runs.
- IF YOUR CAR IS PRIMARILY USED FOR DRAG
RACING, OR IF YOU DRIVE YOUR CAR VERY HARD, IT US RECOMMENDED THAT YOU
UPGRADE TO THE 900 SERIES PACKAGE. See details at ramclutches.com,
click on the Street Dual section from the left bar.
CHASSIS DYNO USE
The chassis dyno is one of the hardest things
that a clutch gets subjected to. There is no slip in the tires and the
drivetrain load is very harsh. It is critical that the vehicle is dyno’ed with
a final drive ratio or 4.10 or lower (higher numerically). If the vehicle is
geared higher, perform the dyno pull in a lower gear such as 3rd to
reduce the load on the driveline. RAM does not recommend excessive dyno use or
‘dyno racing’ with any clutch, reduced life may occur. NEVER DYNO A CAR IN
OVERDRIVE. See below for sample ratios and determining what gear to dyno the
car.
Rear gear 2.90 x 4th gear 1.00 = 2.90
drive ratio
Rear gear 2.90 x 3rd gear 1.30 = 3.77
drive ratio
Rear gear 2.90 x 2nd gear 1.78 = 5.07
drive ratio
Rear gear 3.42 x 4th gear 1.00 = 3.42
drive ratio
Rear gear 3.42 x 3th gear 1.30 = 4.44
drive ratio
Rear gear 4.10 x 4th gear 1.00 = 4.10
drive ratio
ROAD/CIRCUIT RACING
Make sure to ‘rev-match’, or match engine
rpm as engaging the clutch on a downshift. Improper downshifting can damage your
clutch system. This loads the clutch retaining straps in reverse and in extreme
cases will buckle the straps and cause non-release. This will not only increase
the clutch life, but also will make you much smoother into the turns and help
reduce lap times.
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