RINGS SIZE 020 (SET)
Piston Ring Set Size 020 (Set)
Complete for 4 cylinders
Complete piston ring set in oversized size.020" (0.508mm) for the 4-cylinder 134ci engine. This set includes all necessary rings for four pistons and is ready for installation during engine rebuilds where cylinders have been bored to +.020". Suitable for both L-head (flathead) and F-head (overhead valve) versions of the 134ci engine.
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Application 134ci L-head & F-head engines |
Oversized size 020" (0.508mm) |
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Set contents Complete for 4 cylinders |
Version Flathead and F-head |
Features
- Oversized size.020" for bored cylinders
- Complete with compression and oil rings
- Suitable for L-134 Go Devil and F-134 Hurricane engines
- For 3 1/8" bore size cylinders (+.020")
- Ready for installation during engine rebuilds
★ High-quality piston ring set for professional engine rebuilds. Precisely manufactured to OE specifications for optimal compression and oil control.
Application
020" oversize piston ring set fits all 134ci engines where cylinders have been bored to +.020" oversize. This applies to both the L-134 Go Devil flathead engine and the F-134 Hurricane F-head engine. Used during engine rebuilds where cylinder wear requires enlarging the bore from standard 3.125" (79.37mm) to 3.145" (79.88mm).
Installation notes
Installation only by experienced engine rebuilders. Check the ring end gap in the bored cylinder — this should be between.010" and.020". Install the rings with correct orientation and observe the sequence: lower oil ring, middle compression ring, upper compression ring. Use a piston ring installer to prevent damage. Lubricate rings and cylinder wall thoroughly before first start.
Compatibility
IMPORTANT: This set is ONLY suitable for engines with cylinders bored exactly.020" oversize. Check before ordering that cylinders are actually bored to this size. Does NOT fit standard cylinders — for these, the STD set is required. If in doubt about the correct oversize: measure the cylinder bore accurately. The set fits both chain-driven (early MB/GPW) and gear-driven (late CJ) versions of the 134ci engine.
Historical context
The 134ci Go Devil engine formed the heart of the WWII jeep and delivered 54-60 hp at 4000 rpm. Engine rebuilds with oversized piston rings were standard procedure to compensate for field wear and give engines a second life.
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.
ALL_CATEGORIES : Piston,Rings & Bearings CJ2A, Rings CJ3A, Piston,Rings & Bearings M38, Rings - M38, Rings CJ3B
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Willys MB (early) | 1941, 1942 |
| Willys MB | 1942, 1943, 1944, 1945 |
| Hotchkiss M201 | 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966 |
| Willys M38 | 1950, 1951, 1952 |
| Willys M38A1 | 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971 |
| CJ series | |
| Jeep CJ-2A | 1945, 1946, 1947, 1948, 1949 |
| Jeep CJ-3A | 1949, 1950, 1951, 1952, 1953 |
📐 Diagrams & technical drawings
From the original Technical Manual CJ2A_PL_1949 — Parts List — only for Willys CJ-2A / CJ-3A (1949)
From the original Technical Manual TM 10-1513 — Maintenance Manual — only for Willys MB / Ford GPW (1942)
