In 1930 a four-cylinder 151 cu in (2.47 L) Miller engine installed in a race car set a new international land speed record of 144.895 mph (233.186 km/h). Miller developed this engine into a twin overhead cam, four-cylinder, four-valve-per-cylinder 220 cu in (3.6 L) racing engine.

2012年12月24日 · Offenhauser’s 251.92ci 4-cylinder made its way to daylight in 1933. Then the Offy started showing up at the tracks where it won consistently. In 1935 Kelly Petillo chalked up Offy’s first win in America’s great race, yet the powerful little mill remained a competitive race engine in the Indianapolis 500 into the mid-70s.

2020年4月8日 · In an effort to circumvent that, the APBA created a new class for 151-cu.in. naturally aspirated engines. The Miller response was to lop a 310-cu.in. straight-eight in half to create a DOHC four-cylinder with a 3.406-inch bore and 4.125-inch stroke.

2017年3月16日 · The Offenhauser four-cylinder engine dominated Indy 500 racing for decades, powering hundreds of successful racers. It was simple, powerful, and reliable.

2021年11月27日 · In 1935, an Offenhauser-built four, by now displacing 260 cui, won the Indy 500 with Kelly Petillo at the wheel and the name Offenhauser began its ascent to oval racing stardom. By the time the Japanese attacked Pearl Harbour in December 1941, Offy powered cars had won Indy four times.

2018年6月6日 · But one engine stands at the top of the list, the four-cylinder Offenhauser. The engine simply known as, “The Offy”. This little engine dominated American open wheel racing for more than 50 years and is still popular with vintage midget and sprint car racers today.

2019年11月27日 · Every car guy older than 30 knows (or should know) the name Offy. It’s shorthand for Offenhauser, the last name of Fred H. Offenhauser, and the moniker of the all-conquering four-cylinder engine that dominated the Indianapolis 500 during the mid-20th Century.

2014年7月7日 · The 155 fourcylinder with its barrel-type crankcase and integral cylinder head in 1926 was the first stirrings of the engine that became the Offy. The economic depression which began in 1929 severely affected the racing business in America.

2019年3月25日 · It was a high-horsepower, reliable, 4-cylinder twin-cam engine. The cylinder head and cylinder block were all one piece, making gaskets unnecessary. One 1936 story described the original engine as weighing 345 pounds and having a displacement of 225 cubic inches (4 ¼ bore and 4 ½ stroke).

The 220 Offenhauser engine can trace its origins back to the Miller Marine engines of 1926. This version was offered until 1958 when the last unit was built for the Scarab Formula I car. Block Mfg.: Meyer-Drake Cylinders: 4 CID:218 Bore: 4.06 Stroke: 4.25

2014年2月6日 · Impressed by the double overhead cam, four-valve-per-cylinder design, which was a great leap forward at the time, they designed an engine on similar principles. From 1934, through the 1970s, the Offenhauser engine won the Indianapolis 500 27 times.

The Offenhauser engine, familiarly known as the ‘Offy’, was an overhead cam monoblock 4-stroke internal combustion engine developed by Fred Offenhauser and Harry Arminius Miller and originally sold as a marine engine.

It was in this highly successful period that Miller designed the engine that was to become the Offenhauser. It was a 151 cu in (2.5-liter) four-cylinder engine with two valves per cylinder, designed as a marine racing engine for Dick Loynes, one of …

Fred H. Offenhauser, Jr. (November 11, 1888 – August 17, 1973), was a machinist and self taught automotive engineer who developed the Offenhauser racing engine, nicknamed the "Offy", which dominated competition in the Indianapolis 500 race for decades.

1973年8月19日 · Offenhauser gave his name to the four‐cylinder ear, designed by Lee Goosen and first raced at Indianapolis in 1930. The Offy engine powered cars that won all Indianapolis 500's from 1947...

2022年12月19日 · Offenhauser struck out on his own to build automobile versions of the robust four-banger that Miller had developed for boat racing. This so-called Offy quickly emerged as the 800-pound gorilla of American motorsports.

It is not too much to say that Fred Offenhauser shaped American open-wheel racing for nearly half of the Twentieth Century. In 1932 he encouraged Harry Miller to build a 255 cubic inch, four-cylinder racing engine.

The Offenhauser Racing Engine, frequently referred to as just the "Offy", was a 4.2 liter inline 4-cylinder DOHC engine, which has been used in various types of racing for over 90 years now. It was based on a 3-liter marine engine invented by Henry Miller …

180 CID DOHC Inline 4-Cylinder Engine. Bosch Mechanical Fuel Injection. Estimated 325 HP

2015年1月18日 · Yes, when one reads something like, "The Offy head and block are one piece, so it can never have a blown headgasket." The mental picture formed, that it's all a monolithic casting, is quite different than the reality, which is the Offy is …