Toyota K Engine

Toyota K Engine

The Toyota K series was a straight-4 engine produced from 1966 through 2007. It was a 2-valve pushrod engine design, a rarity for the company.

All K series are non-crossflow engines — the inlet and exhaust manifolds are on the same side. They have cast iron blocks and aluminium alloy heads, with a crankshaft supported by 5 main bearings. K series motors have both Hydraulic tappet or Hydraulic Valve Lifters, solid lifters and 1.5 ratio rockers with an adjustment thread for tappet clearance. 7k Engines were released with only the Hydraulic Valve lifters from factory, whereas 4k and 5k engines were made with both hydraulic and solid lifters (depending on year and which model vehicle.)