The Crankshafts

Standard crankshaft on left, Stroker crankshaft on right.

In a stock VW chrankshaft, the crank throw measures 69mm. That is, the distance between the main journal centerline to the rod journal centerline. Anything larger than a 69mm crank throw is considered a stroker crankshaft. Stroker crankshafts will have longer arms, and heavier counterweights which may require clearancing the engine case in order to accomadate the larger crankshaft.
Comparison of measurements from crankshaft centerline to rod centerline.





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