Mack Launches Innovative High Horsepower 605 Engine

[kscarbel2]

Commercial Car Journal / December 1940

To meet demands in the heaviest hauling field, Mack Trucks, Inc., has announced a new Model END-605 Mack-Lanova diesel powerplant.

Similar in design and principle to the 8.5-liter (519 cu.in.) Model ED engine, the new Model END-605 diesel has a piston displacement of 9.9-liters (605 cu.in.), and bore and stroke of 4-5/8 in. x 6 in.

The engine operates at the same maximum speed of 2,000 r.p.m. as the smaller Mack ED diesel and develops 144 horsepower at that speed.

Maximum torque at 1,100 r.p.m. is 455 lb.-ft. (617 N.m).

One of the most important claims of this new diesel is, that like other Mack-Lanova diesels, it combines smokeless combustion with high power, high speed and smooth running.

Some of the reasons why this diesel produces full rated power without smoke may be thus enumerated: The Lanova energy cell in combination with Mack’s combustion chamber design is used in this engine, and all Mack diesels offer more thorough combustion and greater tolerance for different fuels.

Higher grade pistons, rings, valves and liners in these Mack engines resist wear and heat better and longer.

“Permafit” exhaust valve seat inserts endure indefinitely and prolong valve life.

Valves are firmly guided and close accurately and evenly.

Cylinders, which are of heat-treated alloy, do not distort, and gaskets stay tight because of multi-studded and deep-section heads.

Other reasons for full rated power without smoke in this new END-605 Mack Lanova diesel include long-shank nozzles which may be cooled better, a Mack “Synchrovance” injection timer which reduces shock at low speeds, and a flange-mounted injection pump with fully enclosed tamper-proof direct gear drive.

The injection pump is a self-contained multiple-unit protected against maladjustment in the course of ordinary engine maintenance. Full scavenging and low pumping losses are effected by valves which open directly into the combustion chamber.

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[Vladislav]

Wow! Thanks the great for sharing.

I was off my computer the day it was posted so missed it to my big shame.

[james j neiweem]

KS to the rescue on those early Mack diesels.