Due to the demands of the 228R, we are 7-10 days behind on orders.
Tillotson 228R Racing Engine
Working along with companies like Tillotson Racing, we are capable of building engines and components that raise the bar in small engine performance without draining your wallet. The new 228R engine is the next step for our growing engine line up. This engine goes beyond the spec 225RS with more stroke expanding its capabilities and power potential.
Total cc: 228cc(13.913ci) vs 225R/RS (223.93cc[13.665ci])
Compression Ratio: 9.22:1 vs 225R/RS 9.1:1
• Tillotson 72mm Reinforced Block
• 27/25mm Tillotson Head
• 26lbs Valve Springs
• EC Billet Retainers
• Tillotson Racing Lightweight Hypereutectic Piston
• Billet Rod w/Babbitt Bearings
• 56mm Stroke Crankshaft
• SK200 REV Billet Flywheel 34° Timing
• EC Tuned VM22
• EC Billet Intake Manifold
• Banzai 265 Race Cam
The header and fuel pump are not included.
Chrome recoil and blower housing shown for illustration only. The actual parts will be blue or black
72mm Tillotson Reinforced Block –Tillotson Reinforced Block intending to create new engine packages like the 225RS and 228R as well as other highly modified race engines. We made the block thicker and stronger to reduce flex and distortion; this prevents power loss through crank flex and blow-by between the piston and cylinder.
Tillotson Racing Lightweight Hypereutectic 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 for superior 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, we 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.
Billet Rod – Using what we have learned in the development, we made a stronger rod for RPMs above 6500rpms and higher output. This rod is made in house and is exclusive for our engine combination. Our new EC Billet Rods are designed to allow more stroke with standard clone journal crankshafts and bigger camshafts.
56mm Crankshaft – Our 228R is the first racing engine to come standard with a 56mm stock forged crankshaft. There is no replacement for displacement. We’re giving you an additional 4cc. Standard 225 engine 72Mm bore x 55mm stroke = 223.93, EC 228R 72mm Bore x 56mm Stroke = 228. This will help make additional power across the board with a nice bump in the lower RPMs. By using the Tillotson Racing Lightweight Hypereutectic Piston, we have more than enough room for the additional stroke where other stock cast pistons do not.
.265 Banzai – This cam is designed for a broad torque band specifically for mini bikes and karts that need excellent low-end torque, whether it’s accelerating from a dead stop or low-speed cornering. The cam would be duplicated for the 225RS engines as it was ideal for spec engine sprint racing. Peak power is around 7500, but with our 26lbs springs, we are capable of revving the engine over 9000rpms though this is not recommended for longevity.
Tillotson Racing Cylinder Head – Another Tillotson designed component originally designed to make the best performing head in the 196 box stock classes was then modified for the 212R and 225RS engines. We increased the stock 25/24mm valves to 27/25mm and went from 5.5mm stems to 5mm stems to increase flow. This makes the head well suited for the performance goals of our 228R engine.
Billet Aluminum Spring Retainers – While the stock 212R and 225RS heads come with automotive-style retainers and locks, we added performance by reducing the weight with a lightweight billet aluminum retainer. The retainer also adds a great look with its fire red hard anodized coloring.
Mikuni VM22 Carburetor Kit – We have taken one of the most popular carburetors used on mini bikes and made it better. The Chikuni(Chinese Mikuni) carburetor is taken from the best castings by going direct with the carburetor manufacturer, then machined and blueprinted by the most winningest small engine carburetor builders in the world. Not only is this a considerable jump over the stock carburetor, its a leap over rejetted identical carburetors sold through kart part warehouse distributors. We also built our intake manifold to better fit on mini bikes or other chassis where space is limited. This intake also improves the signal to the carburetor and allows more airflow resulting in better performance.
Set Idle Speed to 1800rpms