From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Article detailing new marine engines from Scripps and Chrysler, presented at the 1940 Motor Boat Show.
| Identifier | ExFiles\Box 133\3\ scan0121 | |
| Date | 1st January 1940 guessed | |
| new equipment on the 30, 90, and 100 series engines. Their cooling systems are now equipped with Auto-Temp, a thermostatic device which automatically controls and maintains the engine temperature regardless of outside water temperature or engine speed. The Scripps Auto-Temp is not only entirely automatic in operation but also provides permanent protection for the heart of the system, the thermo metal. This bit of metal, whose expansion and contraction controls the volume of cooling water flow, is fully enclosed in a heavy brass cell and thus is never exposed to the corroding action of salt or acid waters. Chrysler Shows Three New Engines “What’s in a name?” Well, in the name “Chrysler” is the reputation for building fine engines, both for automobiles and for boats. Some people have gathered the idea, because of Chrysler’s automotive reputation, that Chrysler marine engines are converted automobile engines. Let us lay that ghost once and for all and have no more of it. Chrysler marine engines are designed solely and simply for marine use and, outside of the fact that they have the same high quality of material and engineering research, have nothing to do with the company’s output for automobiles. Three new marine engines are the center of interest of the Chrysler exhibit at the 1940 Motor Boat Show. These are the Ace, the Crown, and the Royal Eight. While these engines are new, the names are not new to the Chrysler line. The “newness” of the engines lies in essential changes in dimensions and in improvements which have been incorporated in the designs, such as new type up-draft carburetor, with greater upturn on air horn and larger drain bowl capacity, improved ventilation and by-pass for controlled water temperature. In detail: the Ace has six cylinders with bore and stroke of 3 1/8" and 4 3/8", will develop 46 to 78 brake hp. at 1600 to 3200 r.p.m., is furnished in straight drive types or with reduction gears of ratios from 1.43:1 to 3.46:1. It is also built with an integral type V reduction drive with either 1.43:1 or 2.05:1 reduction. The Chrysler Crown, also with six cylinders, has a bore and stroke of 3 3/8" and 4 1/2", and will develop from 58 to 103 brake hp. at from 1600 to 3200 r.p.m. respectively. It is furnished with the same optional straight and reduction drives as the Ace. The new Royal Eight has a bore and stroke of 3 1/4" by 4 7/8", the same as the old Royal Eight, but develops a top brake horse power of 143 hp. at 3200 r.p.m., as against 125 hp. developed by the old model. With the addition of the 1.43:1 and 3.46:1 reduction gears on the Ace and... [Image Captions] A 4-cylinder engine of the new Scripps Series “30” with 134 cubic inch piston displacement. Develops 50 hp. in high speed and 30 hp. in medium speed models. Below, the 6-cylinder Scripps Series “100” engine, 101 hp. at 2600 r.p.m. Starboard side view of Scripps Models 168 and 178. These two engines develop 175 hp. and 200 hp., respectively, at 2400 r.p.m. | ||