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On Line Performance Parts
Clutches
A Clutch's acceleration performance use
psychics, formulas of mass, force and inertia created by Sir Isaac Newton way before cars
were made, in here we can call it "MOI", or "Moment of Inertia" the
force that opposes a spinning object from speeding up (accelerating) or slowing down
(decelerating). 30% of a typical high performance racing engine's horsepower
is wasted accelerating and decelerating clutch/drive train components, power never making
it to the wheels. Resistance to change in momentum is known as moment of inertia
(MOI) and it is based upon change of speed at a given change of time. A change in
momentum is called acceleration when speed increases, or deceleration when speed of a
rotating object decreases. For a change in momentum of rotating objects such as
clutch system components, it is described by the mathematical formula: MOI=1/2(mass times
radius^2). You don't have to know mathematical formula and theory to understand
that reducing the weight of spinning components helps, but that it is only one part of the
formula that smart old Newton came up with, that the distance from the center line or
radius is the other, more major part of the formula. So to reduce the moment of
inertia, and increase acceleration, it's even more effective to reduce the spinning
object's radius (or 1/2 of the diameter), represented by the "radius^2" where r
is squared or multiplied by itself in the formula. So when the object's psychical
dimension is more toward the center line of a rotating mass (smaller clutch and flywheel
diameter) it has the effect of increasing acceleration and deceleration by reducing the
lag time, or MOI. An easy way to describe this is to take two identical fishing
sinkers or wheel weights, tie a three foot line to one and a one foot line to the
other. Start spinning the weights around in a circle at the same speed, then try to
speed them up by spinning the weights faster. The three foot line will react with
more pulling force, more resistance to change than the one foot line. The one foot
line will seem to spin easier and faster without pulling as much as the three foot line,
though they are of the same weight So you don't have to be a rocket scientist to
figure out that button clutch and smaller diameter clutch pack assemblies will let you
drive further into the corners before braking and allowing you to accelerate out of the
turns faster. These systems use layered multiple clutches to provide more surface
area to "grab" to, and are also lighter in weight than most of their standard
clutch counterparts. These systems are also used in certain drag racing
applications where a low "MOI" is necessary for the best acceleration potential
to reduce "ET" times, and the use of a clutch to get the best high power launch
to transfer the vehicle's weight to the rear wheels is most desirable for traction and
less wheel spin.
Hayes
Street Strip Clutches Matched
Assemblies provides exceptional performance and
dependability for bracket level drag cars or your tow vehicle. Kits contain pressure
plate, disc, release bearing, alignment tool and bolt kit, in Borg and Beck style (Chevy
and Chrysler), or long style for Ford Applications.
Super Connector Sprung Hub Organic
Disc
Hayes Steel Flywheels
Hayes Aluminum Flywheels
Lakewood Bell Housings /Safety
Equipment
One Piece Safety Bell housing Assemblies are legendary for saving people and their cars from the
destructive effects of a clutch/flywheel explosion. All bell housings are made from
1/4" thick steel and are stress relieved after forming. Lakewood bell housings
have been tested and meet or exceed SFI 6.1 Specs.
- AMC & Jeep
- Chevy (7 Models)
- Buick (2 Models)
- Oldsmobile/Pontiac (4 Models)
- Ford (7 Models)
- Mopar (2 Models)
- Safety Block Plate (7 models for above
applications)
Specialty Bell Housings special order bell housings designed for dragsters,
Funny Cars, Pro Stock, Truck and Tractor Pullers and serious competition vehicles.
Housings are stocked in unfinished form and are drilled and machined to meet your
particular requirement. Available with or without provisions for stock type starter,
and several clutch linkage options are offered. They meet SFI 6.2 Specs and are
approved by all major sanctioning bodys. Optional inspection cover allows for fast
simple clutch adjustments and inspection between rounds.
- 6 5/16" Same depth as stock Chevy and SB
Ford. Will accommodate single disc clutches, used in stick shift drag cars, truck pullers.
With or without Starter pocket and or inspection window.
- 6 7/16" Same depth as stock BB Ford,
Will accommodate single disc clutches used in stick shift drag cars, truck pullers. With
or without Starter pocket and or inspection window.
- 7 1/2" Same Depth as stock Mopar, Will
accommodate twin disc clutches used in drag cars, truck pullers, pro stock cars and
dragsters. With or without Starter pocket and or inspection window.
- 8 1/8" Will accommodate triple and some
four disc clutches, used in dragsters funny cars pro stock cars and tractor pullers.
With or without Starter pocket and or inspection window.
Bell Housing Motor Mount Kit
Pilot Bearings
Clutch Fork for GM Applications
Adjustable Clutch Fork Pivot Ball for GM
Applications
Starter Adapter Kit for Chrysler used to relocate starter when a 130 tooth flywheel is used,
contains fabricated plate w/stud, Starter Nose adapter, and hardware.
Bell Housing Locating Kit used to dial in a mis-aligned register bore which could
cause a missed shift or premature pilot bearing failure. Kit contains tow centerless
ground dowel pins and two chamfered washers, requires use of a dial indicator, drilling,
and welding at dowel pin holes.
Ram Clutches
- Premium Replacement Clutch Sets
(Better than OEM, Great Street Drive-ability, Decent Performance)
- PowerGrip Heavy Duty Replacement
Clutch Sets (Good Street Drive-ability and Good Performance)
- Super Duty Performance Replacement
Clutch Sets (Great Performance, Less than Decent Street Drive-ability)
- Long Style Competition Pressure
Plates
- Diaphragm Competition Pressure
Plates
- Borg and Beck Competition Pressure
Plates
- 300 Series Competition Discs (Top of
the line in organic discs, great for the street)
- 700 Series Competition Discs (Not
recommended for use with slicks or drag tires)
- 900 Series Competition Discs (Severe
Duty Street, Drive-ability is not the highest consideration)
- 6000 Series Competition Discs
(Paddle Disc Clutch Disc for most racing applications)
- 1000 Series Competition Discs (Solid
version of the 6000, no dampening springs)
- 7",8",9" and 10"
Billet clutches
- 10.5" Dual Disc Iron
- 10.5" Single Disc Iron
- 5135 Compound Discs
- 5191 Compound Discs
- Component Floaters
- Rametallic Pulling Competition
Systems
- Single and Multiple Disc Iron
Pulling Clutches
- Oval Track Street Stock Rules
Clutches
- Oval Track Multiple Disc Clutches
- Oval Track Couplers (5 Chevy, 2 SB,
1BB, 4 I4 Ford, 1 Chrysler 6 Bolt)
- 6 1/4" Assault Weapon Oval
Track/Road Race Clutches
- Hydraulic Release Bearings
- Competition Quality Standard Release
Bearings (BCA, Nachi, NSK)
- Ram Billet Steel Flywheels
- Ram Billet Aluminum Flywheels
J.W. Performance Transmissions
"The Wheel" Flywheels
Quarter Master
Bert/Brinn Reverse Mount Bell housings 9.25" ring gear on aluminum flywheel, direct starter to
flywheel engagement, separate crank hub/pump drive gear, Bell housing/starter weight is 25
Lbs.!! Eliminates troublesome idler gear, 2.9 Lbs. rotating weight, Universal Oil
Pump mount
Oil Pump or Non-Oil Pump Mounted Kits
available, includes:
- Bell housing
- Starter
- 110T ring gear, must use part #Qtr180120
crank hub/oil pump drive
- Crank hub/22T oil pump drive (for above ring
gear)
- Flywheel bolt kit, bolts ring gear to crank
hub to flywheel, (flywheel not included)
Button Clutch Assemblies closed style button clutches available in 5 1/2" or 7
1/4" sizes, 2 or 3 disk in 1 1/8"x 10 or 1 5/32" 26 spline.
51/2" unit weighs 30% less than 7 1/4", and has less inertia for quicker
acceleration and deceleration.
Ring Gear for Reverse Mount Starter 4 styles for 5 1/2" and 7 1/4" 2 and 3 disk
assemblies, 1 style for 4 1/2" 3 disk clutch assembly
Carbon-V 5.5" Clutch this carbon clutch provides lowest moment of inertia with the
longest life and is directly interchangeable with the quarter master 5.5" button
clutch and bell housing kits. Available for Chevy 2 and 3 Disk for 1 1/8"x10
Spline and 1 5/32"x 26 spline versions.
Metallic Pro Series 4.5" Clutch designed for the requirements of Indy type cars to with stand
the rigors of green flags and pit stop hole shots for a 500 mile race and is suitable for
any asphalt racing application. Use with a cover mounted ring gear (qtr310012) and
the Bell housing (qtr110100) and the starter (qtr114260) the pro 4.5" matches any
carbon clutch moment of inertia performance at a fraction of the price. Available for
Chevy 1 1/8x10 spline or 1 5/32"x26 spline.
7.25 V-Drive Button Clutch Assemblies This high strength closed style billet covered clutch
assembly uses a unique multiple piece pressure plate design that uses balance of leverage
forces to apply the friction disk pressures evenly across all pressure plate surfaces in
the clutch pack to reduce deflection in the engagement /disengagement cycle. Comes
in 2 or 3 disk in 1 1/8"x10 spline or 1 5/32" x 26 spline, requires use of QTR509121 or comparable 153 Tooth high performance
flexplate that is not included.
Tilton
These guys make some unique products for
clutches starters and Bell housings and accessories and they have arraigned then in
semi/complete kits for your ordering conveyance. Most of the time the parts have to
be used together to operate correctly, so we have their sets listed below.
5 1/2" ULGC Package Complete package includes 102T clutch/flywheel assembly,
aluminum clutch housing, reverse mount starter, and release bearing, 3 disk 26 spline
clutches for SB Chevy and SB Ford.
5 1/2" Carbon Metallic Package Carbon Metallic combination offer the absolute lowest moment
of inertia and weight Includes magnesium clutch housing, rear mounted starter,
housing mounted release bearing, lightweight steel flywheel and a choice of 5 1/2" or
4.9" carbon/carbon, or 4.9" carbon/metallic clutch material in 3 disk 26 spline
for SB Chevy Only.
5 1/2" Bert/Brinn Package complete packages are specifically designed for transmissions
with built-in or internal clutches and include aluminum clutch housing, reverse mount
starter, and flywheel. conventional package is used when dry sump pump is mounted on
the motor (No cut out in clutch housing). Dry sump package includes an additional
pulley and the clutch housing is cut out to drive the dry sump pump off the transmission
input shaft. Components/variations are:
- Conventional Mount
- Rear Mount Dry Sump Pump
- Conventional Clutch Housing Only
- Pump Mount Clutch Housing Only
- Bert/Brinn Flywheel
- Bert Brinn Super Starter
5 1/2" Steel ULGC Package Small Block Chevy package is for classes mandating steel
clutch housings and imposing no restrictions on clutch size or starter location.
Package is complete with steel clutch housing, 3 disk 10 spline clutch/flywheel assembly,
starter and release bearing. Common for entry level modifieds.
5 1/2" Steel Package with Pump Mount New package is based on a lightweight ULGC steel clutch
housing with the addition of a slot and bracket to accept a rear mounted pump. Also,
a 30T HTD belt driven pulley is attached to the clutch which drives the pump.
package is complete with steel clutch housing, clutch/flywheel assembly with pulley, pump
pulley, 80T belt, reverse mount starter and special release bearing, pump is not included. Components/variations are:
- Chevy/Muncie 2 Disk Package
- Chevy/Muncie 3 Disk Package
- LW Steel Clutch Housing
- 2 Disk Clutch/Flywheel
- 3 Disk Clutch/Flywheel
- HTD BELT (80T X 8MM X 20MM)
- 52T HTD Pump Pulley
- Super Starter
5 1/2" Steel LGC Package are for small block Chevy packages for classes requiring
steel clutch housings and stock starter locations with no specified flywheel diameter.
includes steel clutch housing, clutch/flywheel assembly, starter and release
bearing. Available in 3 disk fine or coarse spline SB Chevy.
7 1/4" OEM Diameter Steel Packages SB Chevy packages are for use in classes where OEM diameter
steel clutch housing are required. Housings deliver maximum ground clearance and
must be used with 153T flexplate (not supplied) and work with Tilton super
starter or original. Clutch button plate (like a flywheel) bolts directly to flexplate
(the flexplate is not included). This system is designed to get around some class's
regulations, but we feel that a button plate connected to a OEM flexplate is not the best
way to go, we recommend that you use a quality aftermarket flexplate if class rules permit
other possible combinations. Components/variations are:
- 7.25" Steel Package 2 disk 10 spline
- 7.25" Steel Package 3 disk 10 spline
- 7.25" Steel Package 2 disk 26 spline
- 7.25" Steel Package 3 disk 26 spline
- OEM Dia Clutch Housing
7 1/4" OEM Diameter Packages SB Chevy packages are for classes requiring stock diameter
clutches but allowing aluminum or magnesium clutch housings. Designed to use block
mounted starter and a true 153T FLYWHEEL (not a flexplate) to yield a lower
moment of inertia. Proven in use from Winston west to Winston cup racing.
Available in aluminum or mag housings, 3-disc 1 5/32" x 26 Spline
7 1/4" Button Clutch Flywheel
Assemblies have lightweight flywheels with no
ring gear. Assembly may be used with an external starter or an automatic
transmission flexplate. Applications for Chevy include all V-8, 90 degree v-6, inline
6, and 153 4 cylinder (specify if 87-up crank).
Assemblies include clutch,
flywheel, discs and hardware, but not the Flexplate. If using this combination we
strongly encourage the use of a high quality racing flexplate that can withstand the
forces and abuse the button clutch can produce. We recommend that you do not use a
OEM flexplate with this setup, since Flexplates can develop cracks that work their way
around the crankshaft bolt hole circumference. We've replaced allot of these cracked
OEM Flexplates through the years, and it is a very dangerous situation to have, since the
ring gear can behave like a chain saw and will try to come through the bell housing if it
lets loose. We sometimes run our racing small blocks around 9-11 K rpm, I'd hate to
be the one testing the strength of a bell housing at these extreme Rpm's due to a cracked
flexplate and broken input shaft.
7 1/4" LGC (Low Ground Clearance)
Clutch Flywheel Assemblies
7 1/4" Replacement parts and flywheels
Hydraulic Release Bearings
- 52 Series Aluminum and Magnesium Clutch
Housings Release Bearings
- Clutch Housing Mounted Release Bearings (4
styles)
- Transmission Mounted Release Bearings (6
Styles)
- Threaded Release Bearing Retainer
Assemblies (15 Styles)
New Flywheels
- Chevy V8, 153T
flexplate, lightweight Part Number 50-776
- Chevy V8 153T
flexplate, ultra-lightweight Part Number 50-775
Call for current Prices for your specific application
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