K340 2.4L Naturally Aspirated Crate Engine

The 4 Piston Racing K340 Crate Engine is a 2.4L Naturally Aspirated engine built for street performance, offering a balance of daily drivability and aggressive acceleration. This engine provides a smooth idle and street manners for everyday use, while delivering low-end punch and revving beyond 9000 rpm thanks to its high-flow CNC cylinder head and high-lift camshaft. It is designed for use with a minimum of 91 octane pump gas, E85, or race fuel. The K340 engine is meticulously assembled using premium components. It features a stock cylinder sleeve Honda K24 engine block with a 99mm stroke and 87.5mm bore, paired with Saenz S-Series connecting rods and Wiseco Armor Plated 12.5:1 pistons. The assembly includes ACL race bearings, ARP fasteners, a 4P spec head gasket, and a 4P Pro 156v2 CNC Cylinder Head with Ferrea valves, springs, retainers, and locks. It also utilizes 4P tool steel billet RR4 iVTEC camshafts, a 4P ported oil pump with a baffled sump, and all new Honda timing components. The engine is sold complete from valve cover to oil pan and includes detailed build sheets. Recommended for daily street use, Auto X, and track use, the K340 engine is constructed with Armor Plated Forged Pistons and Forged Connecting Rods, along with premium valvetrain components for extended durability. 4 Piston Racing emphasizes that purchasing this complete engine is an investment in a fully developed and tested program focused on both maximum power output and durability, meticulously assembled by specialized engine builders.