SEHNSUCHT CVT Torque Converter for 6.5HP 3/4" Engine — 6" Driven Pulley, 3 Belts, #35/#40 Sprockets

SEHNSUCHT CVT Torque Converter 30 Series is a drop-in replacement clutch and driven pulley kit for 3/4" straight-crank 6.5HP (212cc) horizontal engines used on mini bikes, go-karts, and small utility vehicles, supplied with three belts and two sprockets.

Designed to replace Comet TAV2 Torq-A-Verters (part numbers 217610A, 218353A, 219456A, 219552A and similar Manco/Comet assemblies), this kit brings a complete CVT set including driver clutch, 6" driven unit, three high-quality belts (plus two extras in total supply), a jackshaft with sprocket, an aluminum engine mounting plate, mounting hardware, and two sprocket options for #35 and #40/#41/#420 chains. Most components arrive partially assembled to simplify installation; confirm your engine’s 3/4" straight crankshaft with a flat key before ordering.

How will this CVT torque converter affect drivetrain performance?

The SEHNSUCHT torque converter enables variable transmission of torque to the driven pulley so your vehicle accelerates smoothly without manual gearing. It’s built from iron and aluminum for strength and heat dissipation, helping maintain torque transfer under load while resisting wear.

• Adjustable engagement range approximately 2350 ±200 RPM using springs and adjustments (springs not included).
• Made for 6.5HP (212cc) horizontal shaft engines with 3/4" bore and flat key.
• Lightweight aluminum faces and iron components for balanced durability and cooling.

What parts are included and what sizes do they use?

This kit ships with the driver clutch, a 6" diameter driven pulley (5/8" driven bore), three belts sized for a 6" driven center distance, a built-in jackshaft with sprocket, an aluminum engine mount plate, two chain sprockets, and a full mounting hardware set. Two sprocket teeth options let you match chain types common on small vehicles.

• Belts: length ~27.76" (70.5 cm), width 3/4" (1.9 cm), designed for 6" driven units.
• Sprockets: 10T for #40/#41/#420 chains and 12T for #35 chain compatibility.
• Driver bore: 3/4"; driven overall diameter: 6" (5/8" driven pulley bore).

How easy is installation and what should I watch for?

Most parts arrive partially assembled to speed installation, but a basic mechanical skillset and standard tools are required. Verify shaft size, keyway orientation, and belt direction during fitting; an arrow marked on each belt must face downward when installed for correct tracking.

• Confirm 3/4" straight crankshaft with flat key before purchase.
• Observe belt arrow direction when routing—arrow must face down.
• Typical engagement range about 1200–3100 RPM after spring swaps; default around 2350 RPM.

Which engines and machines is this compatible with?

The kit is made to pair with small gasoline engines and a variety of light vehicles that use Comet-style torque converters. Common applications include go-karts, mini bikes, mini choppers, lawn equipment, ATVs used for light duty, and small tractor or winch setups where a CVT-style engagement is preferred.

• Compatible with Comet/Manco-style torque converter systems and many 6.5HP 212cc horizontal engines.
• Works with mini bikes, go-karts, riding lawnmowers, small tractors, and winches.
• Chain drive adaptable via included 10T (#40/#41/#420) and 12T (#35) sprockets.

Who is this for: experienced DIY mechanics, small-vehicle fabricators, and maintenance technicians who need a rugged, serviceable CVT replacement for 3/4" straight-crank 6.5HP engines. It’s ideal if you want an off-the-shelf torque converter kit that supplies belts, sprockets, mounting hardware, and a preassembled jackshaft to reduce install time—just verify size compatibility and plan for minor adjustments such as spring swaps for your desired engagement RPM.