Porsche 928 Engine Automobile Advertising Poster
| Genre: | Automobile |
|---|---|
| Artist: | Anonymous Artists |
| Year Printed: | c. c1974 |
| Size: | 40 x 30 |
| Country of Poster: | Unknown |
| Restoration Detail: | Unrestored |
| Grade: | Very Fine |
| Additional Information: | Original Porsche factory poster: There was no doubting the efficiency of the 928 engine. It was not, as some thought, an adaptation of the contemporary 4.5-liter Daimler-Benz V-8. Displacement was close enough - 4,474 cubic centimeters versus 4,520 (273 cubic inches versus 276) -- but the Porsche unit was more oversquare with a bore and stroke of 95 ´ 78.9 mm. Pistons were iron-coated aluminum-alloy units running in linerless bores, made possible by casting the block in Reynolds 390 silicon-and-aluminum alloy, like the 911 engine. Again, the bores were electrochemically etched to leave silicon crystals as the wearing surface. The traditional forged-steel crankshaft ran in five main bearings, with forged connecting rods paired on common journals. Naturally, there were no Detroit-style pushrods and rocker arms but a single overhead camshaft per cylinder bank, driven by a Gilmer-type belt. Though the banks sat at right angles, their cam covers were situated to make the installed V-8 look much like the 911 flat-six, which was possibly deliberate. The cylinder heads were made of alloy, for additional lightness. With all this, rated output was 240 DIN horsepower European at 5,500 rpm and 257 pounds/feet of torque peaking at 3,600 rpm. U.S. models arrived with 219 horsepower (SAE net) at 5,250 rpm and 245 pounds/feet of torque (also at 3600) due to a more restricted exhaust system with catalytic converter for emission control (making this a 50-state car from the first) and minor retiming for operation on lead-free fuel. This is an Original Lithograph Vintage Poster; it is not a reproduction. The Vintage Poster has been working with collectors around the world helping them with their original vintage poster collections. Our posters come with a . We stand behind the description and condition of the vintage posters shown on the website. The Vintage Poster is an IVPDA certified vintage poster dealer. Available online to you 24/7. We are glad to assist you. Our current inventory is online and is updated frequently. To purchase, simply add the item(s) to your cart and check out. They will be delivered to your door. Your satisfaction is guaranteed! |
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