Engine Parts 2.2L 4-Cylinder 4-134 cui L-Head "Go Devil" for Willys M38
Pistons, Valves, Bearings & Gaskets for Reliable Engine Performance (1950–1952).
Why the 2.2 Liter L-Head Engine in the Willys M38 Needs Overhauling After Decades.
The 2.2 liter L-Head engine (134 cui, "Go Devil") is the heart of every Willys M38 and, after more than 70 years, is nearly always due for an overhaul. Cylinder head gaskets harden and start leaking, valves and valve guides wear from decades of use, while piston rings lose tension and cause compression loss. Crankshaft and connecting rod bearings run out, the rear crankshaft seal hardens, and the oil pan gasket becomes porous with age. The intake side shows its age too: carburetor horns corrode, intake manifolds clog up, and the PCV valve sticks. Anyone restoring an M38 to running condition or museum-accurate originality usually can't avoid a thorough engine overhaul – from the cylinder head down to the oil pan.
- Cylinder Head & Valve Train: The cylinder head gasket and the matching valve spring for intake and exhaust.
- Pistons & Connecting Rods: The piston ring set and the connecting rod bearing in standard or oversize.
- Crankshaft: The main bearing set and the rear crankshaft oil seal for a tight output side.
- Intake & Carburetor: The carburetor air horn set and the intake manifold for the complete intake tract.
- Gaskets & Hardware: The oil pan gasket and the exhaust manifold gasket set for sealing the lower engine.
American Manufacturing and Philippine Precision in the Intake Tract.
Cylinder head gaskets, valve springs, and connecting rod bearings from Crown Automotive – American engineering – form the backbone of the range. Carburetor horns, pistons, and intake manifolds are supplied by Omix, also US-made, while the Philippine manufacturer MD Juan contributes the complete carburetor air horn elbow. Main bearings come from Sealed Power, intake valves from Enginetech – both established American brands.
Your Partner for the Willys M38 Engine Overhaul.
Whether you need a single gasket or a full engine overhaul, we're happy to advise you on tolerances, fitment, and the correct assembly order for your 2.2 liter L-Head engine, including compatibility questions for the related Jeep CJ3A. Your order leaves our warehouse as fast as possible after receipt.