PISTONS SIZE STANDART (SET OF 4)
Std. (Standard) → 79,375mm
Set of 4 standard size engine pistons (Ø=79.37mm), delivered with their pins.
Suitable for Jeep Willys MB, M38, M38A1, CJ2A, CJ3A, CJ3B, CJ5, CJ6, Hotchkiss M201 and Ford GPW
Pistons standard size (set of 4)
Piston pins included
Complete set of four standard-size pistons with matching piston pins for the 134ci L-head engine. These pistons have a standard bore of 3.125" (79.375 mm) and are suitable for engine rebuilds where the cylinders have not been bored out.
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Bore 125" (79.375 mm) - standard |
Engine type 134ci L-head (Go Devil) |
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Set contents 4 pistons with pins |
Notes For standard cylinder bore |
Features
- Standard bore 3.125" (79.375 mm)
- Complete with piston pins
- Set of 4 pieces
- Suitable for engine rebuild
- For non-overbored cylinders
★ Quality pistons for restoration and rebuild of the legendary 134ci L-head engine. Supplied as complete set with all necessary piston pins.
Application
Suitable for vehicles fitted with the 134ci L-head engine as mentioned in the product categories. Only to be used with standard cylinder bore. For overbored cylinders, an oversize piston set must be used (e.g. +0.010", +0.020", +0.030", +0.040" or +0.060").
Installation notes
Check the cylinder bore carefully before fitting. The specified piston clearance in the cylinder is 0.0015 to 0.0020 inch (0.038 to 0.051 mm) according to the original Technical Manual. Always measure the bore after machining to select the correct oversized pistons if required. Piston pins must be fitted with the correct clearances.
Compatibility
IMPORTANT: These standard-size pistons are ONLY suitable for cylinders that have not been overbored. In case of wear or damage to cylinders, it is often necessary to bore out to a larger size (+0.010" to +0.060"), requiring oversize pistons. Always check the actual cylinder bore before ordering.
Historical context
The 134ci L-head engine, nicknamed 'Go Devil', was developed by Delmar 'Barney' Roos and powered almost all American and Allied military jeeps during WWII. This robust four-cylinder remained in production well into the 1960s for civilian and military applications.
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, Pistons And Sleeve CJ3A, Piston,Rings & Bearings M38, Pistons And Sleeve - M38, Pistons And Sleeve 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 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)
