Here are the components kits for the Jr. Dragster and karting racing applications so the junior racer in your pits can have the same excitement and feel of winning with the Big Boys

On Line Performance Parts

Jr. Dragster, Kart Racing and Lawnmowers

Lunati Stroker Crankshaft for 5 H.P. Engine

• 2.437" (Stock Crankshaft Stroke)
• 2.587"
• 2.637"
• 2.737"
• 2.837"

Crankshaft main bearings and seals

• Motorsports Block
• I.C. Block
• First Style Block
• I.C. Block with Billet cover (Raptor II Block)

Valve Springs

• Standard duty
• Super Duty (Ideal for High Power / RPM Billet Camshafts)

Valves (Briggs)

• 1.125" Exhaust
• 1.165" Exhaust (High Flow)
• 1.250" Intake
• 1.340" Intake (High Flow)

Pistons

• Unchromed .540 Compression Height .080/.100/.120/.140" Overbore
• Unchromed .590 Compression Height .080/.100/.120/.140" Overbore
• Unchromed .640 Compression Height .080/.100/.120/.140" Overbore
• Chromed .540 Compression Height .080/.100/.120/.140" Overbore
• Chromed .590 Compression Height .080/.100/.120/.140" Overbore
• Chromed .640 Compression Height .080/.100/.120/.140" Overbore

Billet Aluminum Rod

• 4.325" Rod Length
• 4.350" Rod Length
• 4.375" Rod Length
• 4.425" Rod Length (Great for Stroker Engines)

Fel Pro Gasket Sets

• Stock Full Gasket Set
• Jr. Dragster Full Gasket Set
• Go Kart Full Gasket Set
• Seal Set

Jr. Dragster and Kart Rotating Assemblies

• +.100" Piston 2.587" Stroke 14.3 Cubic Inches
• +.100" Piston 2.673" Stroke 14.6 Cubic Inches
• +.100" Piston 2.737" Stroke 15.2 Cubic Inches

Camshafts

Cast Iron

• duration @ .050"=252 Degrees / .300" lift (Baseline Cam)
• IKF/WKA Legal Stock Cam (Blueprinted Factory Cam)
• Outlaw Stock Camshaft (for .235" valve lift, use Standard Springs)
• Outlaw Stocker Camshaft (for use when the lift is not checked, duration @ .050"=252 Degrees / lift .300")
• duration @ .050"=262 Degrees / .335" lift (Minimum Stroker Length of 2.537")
• duration @ .050"=272 Degrees / .335" lift (no rules run what you bring cam)

Billet

• duration @ .050"=256 Degrees / .356" lift (Baseline Cam)
• duration @ .050"=253 Degrees / .372" lift (Excellent bottom end and mid range torque)
• duration @ .050"=258 Degrees / .390" lift (For Limited or Stock Stroke Opens)
• duration @ .050"=263 Degrees / .405" lift (for Strokers)
• duration @ .050"=268 Degrees / .410" lift (6000 RPM Clutch Slip)

Must use Super Duty Valve Springs for cams that have .360" Lift or more

Billet Tappets

• Std Length
• +.100" Length

A Word of caution when using these parts for your lawn mower.   Lawn mowers tend to gain high power levels when modified, but the ability of rocks to launch great distances also increases. If you intend to rebuild your lawnmower with these parts, use check your yard for junk when mowing since rocks, wire and other obstacles tend to destroy windshields, paint jobs and can cause bodily injury when hit by the blade.

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