What was the horsepower of the 1993 Quad 4?
The 1991–1992 W41s were rated at 190 hp (142 kW), while the 1993 W41 was rated at 185 hp (138 kW) as a result of the first round of exhaust port size reduction to improve emissions and other changes to the Quad 4 architecture to reduce NVH. The additional 10 hp (7 kW) came from longer duration cams and a different PROM .
Where did the Quad 4 engine get its name?
The Quad 4 name is derived from the engine’s four-valve, four-cylinder layout. The engine was a modern design for its time, using a cast-iron block and an aluminum head.
How many cranks are in a GM Quad 4 engine?
Our extensive research shows there are actually a total of six different blocks, three cranks, three rods, seven heads, four cam housings, four front covers and three oil pumps used on these engines from 1987 through 1995, and that doesn’t include the changes that were made for the 2.4L engine!
How big is the engine in a Oldsmobile Quad 4?
Quad 4 engine. The engine family known as the Quad 4s was debuted to the public in the spring of 1987. The Quad 4 is a 2,260.5 cc (2.2605 L; 137.94 cu in) DOHC inline four-cylinder produced by General Motors’ Oldsmobile division.
The 1991–1992 W41 were rated at 190 hp (140 kW), while the 1993 W41 was rated at 185 hp (138 kW) as a result of the first round of exhaust port size reduction to improve emissions and other changes to the Quad 4 architecture to reduce NVH (noise, vibration, and harshness).
How did the Oldsmobile Quad 4 engine get its name?
Early television ads touting the new engine’s abilities showed video of a limited edition Oldsmobile Calais (called the “GMO Quad 4”) racing around city streets. The Quad 4 name is derived from the engine’s four-valve, four-cylinder layout. The engine was a modern design for its time, using a cast-iron block and an aluminum head.
How much does it cost to change a head gasket on a Quad 4?
The Quad 4 is actually a pretty sweet engine. GM wasn’t the only one having issues with Iron blocks and Aluminum heads (different expansion rates) But you are correct that these tend to destroy head gaskets at a higher rate than do today’s engines. I’d expect a head gasket change to cost $300-$600 depending on any machining needed.
What kind of engine does a GM Quad 4 have?
Although it was publicized in 1988 that the Quad 4 was forthcoming in a 180 bhp (130 kW) “HO”, as well as a 250 bhp (190 kW) turbocharged version (the same engine that was in the pace car that year), GM never released the turbocharged version as an option.