"Mesmerizing Sounds: Inline-Six Engine Hits Mind-Blowing 10K RPM+"
Originally Published 2 years ago — by Motor1
A fascinating video showcases the assembly and tuning of a tiny 21cc inline-six engine, reminiscent of the Ford 300-cubic-inch powerplant. The builder makes adjustments to improve performance, including replacing the water pump and cylinder head gasket. Despite initial tuning issues, the engine revs beyond 10,000 rpm and the builder plans to further enhance it with a functional mechanical water pump, new exhaust, and a possible switch to a single-carburetor setup. The Howin L6-210 engine kit is available for $1,299.99 with a $200 coupon.