Early Short Stroke Porsche 911s
Don’t bring a slingshot to a gunfight unless of course you are David taking on Goliath! Regarding cars, it translates into “there is no substitute for engine displacement.”
911 enthusiasts tend to agree that a larger displacement engine is better. Such engines are not only equipped with larger bores but also
longer strokes.
The first long-stroke 911 crank was the 70.4 mm unit used in the 2.4-liter flat 6-cylinder engine (1972), 2.7 (1973), and 3.0 (1974). Then the crank was upped to 74.4 mm and used in the 3.2-liter (1984), followed by the 76.4 mm unit installed in the 3.6 (1989) and 3.8-liter (1993) engines.
Considering the many long stroke options that are available with the more modern engines, why would anyone consider the shorter 66 mm cracks that were part of the earlier 2.0, 2.2, 2.5, and 2.8-liter 911 engines? This could be compared to entering a saloon for a gunfight packing a.22 rather than a colt 45.
Like the.22, what does the smaller 66 mm crank and the resulting shorter stroke have to offer? Well, accuracy in the case of the gun and quick responsiveness in the case of the earlier 911 engines. The newer long stroke and big bore engines really put out the horsepower. However, the earlier engines offer responsiveness. Such results in some real pure driving pleasure.
Although the earlier 911 engines cannot match the all out performance of the more recent powerplants, the earlier cars weighed much less than the later cars. Thus, an early short stroke engine can be more of a blast to drive than what many people realize. With the earlier engines, the driver is indeed more involved in the driving process.
Get a short stroke 2.5 or 2.8-liter engine combined with the car’s light weight and you have good performance to the tune of a 7300-8000 redline and a 0-60 time in the mid 6-seconds.
So, if you have the chance to drive an earlier short stroke 911, definitely do it! You will experience a new sense of driving please (fun) that you may have not encountered in a long time.
Kyle Busch is the author of “Drive the Best for the Price…” He welcomes your comments or car questions at his auto web site: www.DriveTheBestBook.com.
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