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The Willys L134 engine, nicknamed the Go Devil, was a flat-head four cylinder engine. The
L134, as the name suggests, has a 134 cu in displacement and puts out 60 hp.
Beginning in 1950s, Willys began phasing in the F134 engine, starting with pickups and
wagons. The F134 engine, or Hurricane, was an F-head engine with the exhaust valves in the
block and the intake valves in the head. Although the displacement, bore, and stroke
remained the same as the L134, with the new valve configuration, the F134 produced 75 hp,
making it one of the most powerful 4 cylinder engines in production at the time.
The L6-226 engine, the Super Hurricane (also Kaiser-Frazer Supersonic), was a Continental
engine that was used by Willys for its pickups and wagons. The L6-226 produced 105-115 hp.
There were a few other engines Willys used as well. The L6-161 (Lightening) flat-head
straight six, the F6-161 (Hurricane) f-head version of the 6-161, and the Jeep 6-230 (Tornado)
OHC engines were all used for short periods in a few models.
The L134, F134, and L6-226 are the most commonly seen Willys engines and are also the
easiest to get parts for. We have full engine rebuild kits available as well as the individual
parts. There are, however, a few small parts that are not available new which you will want
to make sure you or your machinist keep track of. One is the valve keepers - these routinely
get lost and they aren't available new.
L134, as the name suggests, has a 134 cu in displacement and puts out 60 hp.
Beginning in 1950s, Willys began phasing in the F134 engine, starting with pickups and
wagons. The F134 engine, or Hurricane, was an F-head engine with the exhaust valves in the
block and the intake valves in the head. Although the displacement, bore, and stroke
remained the same as the L134, with the new valve configuration, the F134 produced 75 hp,
making it one of the most powerful 4 cylinder engines in production at the time.
The L6-226 engine, the Super Hurricane (also Kaiser-Frazer Supersonic), was a Continental
engine that was used by Willys for its pickups and wagons. The L6-226 produced 105-115 hp.
There were a few other engines Willys used as well. The L6-161 (Lightening) flat-head
straight six, the F6-161 (Hurricane) f-head version of the 6-161, and the Jeep 6-230 (Tornado)
OHC engines were all used for short periods in a few models.
The L134, F134, and L6-226 are the most commonly seen Willys engines and are also the
easiest to get parts for. We have full engine rebuild kits available as well as the individual
parts. There are, however, a few small parts that are not available new which you will want
to make sure you or your machinist keep track of. One is the valve keepers - these routinely
get lost and they aren't available new.
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