CAMSHAFT TIMING CHAIN EARLY TYPE
WO637065
Camshaft timing chain early type
For L-134 Go Devil engine with chain drive
Original surplus timing chain for the Willys L-134 'Go Devil' engine with chain-driven camshaft. This chain was used in early production WWII jeeps and is a critical component for correct engine timing.
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Condition New Old Stock (NOS) |
Engine type L-134 L-head with chain drive |
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Production period 1941-1945 (early production) |
Part number WO637065 |
Features
- Original surplus quality (NOS)
- For early L-134 'Go Devil' engine
- Chain-driven camshaft
- Suitable for WWII production
- Critical component for correct engine timing
★ Authentic surplus part for the correct restoration of early WWII jeeps with chain-driven camshaft. Later in production, this system was replaced by gear drive.
Application
Suitable for early Willys L-134 'Go Devil' engines with chain-driven camshaft, as used in Willys MB (1941-1945), Ford GPW (1941-1945), early CJ-2A (1945-1946) and Hotchkiss M201. From mid-1946 (engine number 44417), the chain drive was replaced by gear drive. Note: not suitable for later engines with gear-driven camshaft.
Installation notes
The timing chain must always be replaced together with the matching sprockets for optimal fit and timing. During installation, carefully align the timing marks on crankshaft and camshaft sprockets. Check backlash after installation: no more than 3 degrees, ideally less than 1.5 degrees. Use a degree wheel for accurate timing adjustment.
Compatibility
IMPORTANT: This is ONLY for early L-134 engines with chain-driven camshaft. Most WWII MB and GPW engines had chain drive, but from July 1946 Willys switched to gear-driven camshafts. Later CJ-2A (after mid-1946), CJ-3A, CJ-3B, M38 and M38A1 have gear-driven systems and do NOT use a timing chain. Check the front of your engine block: a short boss or flat plate above the water pump indicates chain-type. If in doubt: check the engine number.
Historical context
The L-134 'Go Devil' engine with chain drive was standard in all WWII production Willys MB and Ford GPW jeeps. After the war, Willys switched to the quieter and lower-maintenance gear drive, although during material shortages in 1946-1948 chain engines were still temporarily installed.
This description was generated automatically. Unsure about fitment? Contact us at info@willys.be.
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This part is intended for the restoration of historic military vehicles. Fitting, aligning, deburring or reworking is part of that work and is inherent to the nature of these goods. Dimensional variation also exists between original vehicles.
Installation requires technical knowledge of the vehicle. Unsure whether this part suits your version? Ask us before purchase at info@willys.be.
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Willys MB (early) | 1941, 1942 |
| Willys MB | 1942, 1943, 1944, 1945 |
| Ford GPW | 1942, 1943, 1944, 1945 |
| Hotchkiss M201 | 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966 |
| CJ series | |
| Jeep CJ-2A | 1945, 1946, 1947, 1948, 1949 |
📐 Diagrams & technical drawings
From the original Technical Manual TM 10-1513 — Maintenance Manual — only for Willys MB / Ford GPW (1942)
