djs stoker crank question

[rich]

when stevens stroked the crank for your bus did they weld up the journals then recut them for stock bearing? or do they use thicker or custom bearings? Fly cutting pistons and decking blocks for compression changes are common place in the american muscle car,drag racing, and power boating seen. As is stroking and destroking cranks. I should have thought of the crank stroke idea. Any info on the bearings would be appreciated. I'd consider trying that instead of decking the cylinders but I think that would decrease the connecting rod ratio. wouldn't the added stroke increase the torque but decrease rpm's? and increase mass harmonics? Does anyone know the formula for figuring the connecting rod ratio? I had it written down somewhere and can't locate it.

[djs]

You know, I don't really know how they cut the crank. The stock 2.0L crank already has smaller rod journals than the the 1.7/1.8, which is how the increased stroke is accomplished by VW. I think Mark Stephens may actually use a counterweighted crank of the correct grind and geometry for this application, possibly starting with the stock 1.7/1.8 crank. I recall seeing counterweights on my crank when I had to replace a burned piston last year. In fact, the new replacement pistons had to be clearanced and re-balanced to clear the counterweights. You can check their (MS's) advertisement to see if a counterweighted crank is part of the package. My Vanagon 2.2L is actually their "Stage II Stroker" configuration.

Hope this helps!