SPRING FLAP EXHAUST COLLECTOR
WO637208
Heat riser valve spring
Bimetallic spring for heat riser valve
Bimetallic spring for the heat riser valve in the exhaust manifold. This spring controls the valve that directs hot exhaust gases through the inlet manifold during engine warm-up, ensuring better carburettor operation during cold starts.
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Material Bimetallic |
Part number 637208 |
|
Application Exhaust manifold |
Function Temperature-controlled valve operation |
Features
- Bimetallic construction for temperature control
- Controls heat riser valve in exhaust manifold
- Ensures optimal carburettor warming during cold starts
- Opens automatically when engine is warm
- Replacement part for worn or broken springs
★ Essential component for correct heat riser valve operation. A defective spring can lead to poor cold-start performance or carburettor overheating.
Installation notes
The spring must be fitted so that it keeps the heat riser valve closed when the engine is cold. During warm-up, the bimetallic spring expands and opens the valve, so that exhaust gases are no longer directed through the inlet manifold. Ensure the spring can move freely and do not paint it — paint affects thermal operation.
Historical context
The heat riser valve with bimetallic spring was used during WWII to bring engines up to temperature more quickly and prevent carburettor icing, particularly important during operations in cold climates.
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 : EXHAUST COLLECTOR - M38
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Alle Willys / Ford / Hotchkiss jeeps | 1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971 |
📐 Diagrams & technical drawings
From the original Technical Manual CJ2A_PL_1949 — Parts List — only for Willys CJ-2A / CJ-3A (1949)
