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Old 10-25-2008, 02:58 AM   #136
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Originally Posted by Brindfan View Post
^^^In the 2.3 Duratec, there is an eccentric weighted shaft which offsets vibrations in engine. This is a comon practice in V6 and long stroked I4 engines.

I believe the shaft weighs about 20 pounds, and steals about 15 hp from the engine.

Some people want the extra hp, so there are companies that make a kit to delete the balance shaft.
Yeah the whole assembly weighs in at around 20 lbs. The shafts themselves aren't that much and it only really frees up around 3-5 hp maybe. What it is really good for is freeing up rotational drag and allows the motor to respond faster.
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