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I don't have a knife edged crank in the Alfa, but I do have one in the track car. I lost 5lbs of rotational weight over the stock one. I did notice the car was more willing to rev, but seeing as I was able to loose over 20lbs between the crank and flywheel, thats a given. I did have the flywheel on the car before I did the bottom end (I even had some stock rods that someone had taken 140 grams each off. All I can say about those is.... SCARY! I didn't use them.) I can only imagine how an Alfa engine would rev with that much weight cut out of the rotating mass. I do have to say it takes some getting use to with a light bottom end and flywheel, when you figure it out however, its all good.
Will
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1969 1750 105.51 GTV AR1530324
1969 Datsun 2000 roadster (the track car)
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