The Tillotson 236R Racing Engine Kit is designed for you to build your own kart or minibike racing engine.
The Tillotson 236R is 236.15cc, or 14.41ci puts you very close to the mark and does it while being extremely budget-friendly. Our kit includes a partial short block allowing you to add your current clone or predator parts, racing carburetors, and other components. If you want to build a brand new engine, we have many add-ons to make a complete engine. Engine and Short Block does not come assembled.
72mm Tillotson Reinforced Block – This is the core of the engine and what allows most of the magic happens. Tillotson designed these blocks to handle mild endurance racing engines for Tillotson's 225RS/T4 Class. Still, with Tillotson's background in modifieds, they couldn't pass the opportunity to build one of the best blocks for high horsepower applications. Tillotson made the block thicker and more robust to reduce flex and distortion; this prevents power loss through crank flex and blow-by between the piston and cylinder. At 72mm, Bore its one of the largest bore blocks straight from the factory.
Tillotson Racing Lightweight Hypereutectic Piston – This piston is advertised as a forged piston by other distributors; it is, in fact, not a forged piston.
The piston uses the latest technology and design utilizing racing slipper skirt vs. conventional barrel skirt design of other stock pistons. This piston uses an aluminum alloy with high silicon for a lower coefficient of thermal expansion, allowing tighter tolerance. The piston is superior in performance and longevity over stock Chinese cast pistons used in other engines and kits. The low slipper skirt design also allows more clearance in the rotating assembly for larger stroke crankshafts. In addition, Tillotson made the compression height shorter by moving the location of the pin and using a smaller diameter wrist pin. These improvements allowed the use of a longer rod while reducing weight in the rotating assembly.
58mm(2.283") Stock Forged Stroker Crankshaft – This is the first-ever 58mm stock crank for the clone market. The crankshaft is significant because it has only .017" less stroke than the billet cranks made in the aftermarket and, more importantly, at less than a quarter of the price. With this kit, you will able to build an entire short block for just the billet crank alone.
Billet Rod – Tillotson designed the original billet rod for Tillotson 225RS engines, which uses a 55mm stroke crankshaft. And we built the first billet rod to fit the Tillotson piston and a 56mm crank and now the first to use our exclusive 58mm crankshaft. This rod is made in house and is unique for our engine combination. Tillotson Rods are designed to allow more stroke with standard clone journal crankshafts and bigger camshafts.
These components are the core of the 236R "U-Build-It" Kit. It comes with the hardware, gaskets to build a complete a short block minus the camshaft.
• Tillotson 72mm Reinforced Block
• Tillotson 72mmLightweight Hypereutectic Piston
• Billet Connecting Rod
• 58mm Stroker Crankshaft
• Stock Sidecover
• All hardware and gaskets are included to assemble the short block.
• Push Rods are not included(Chromoly Recommended for all builds)
To Build a Complete Engine, we have many add-ons to build many different combinations based on your budget and goals.