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Old 02-24-2007 | 10:33 PM
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tim220225
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Default RE: Echo BME twin

Capt,n it will look somewhat similar. Ours will have four counterweights and no steel bar between them. That engine appears to me as though it would run kind of rough and be unbalanced. The counterweights on ours will be 180 degrees opposed. Look back at my crank picture and you will see what I mean. The crank on the left will have the clutch end cut flush and faced to the journal then bored. I plan on boring a flat bottom hole. I suppose you could bore through too. Wouldn't make a difference and be a little easier to do. The other crank will have one end cut off and faced to the depth of the hole. They should fit together nicely as the journals are ground flat. Align them and tack weld them together. Most of the stress will be on the front half or prop side of the completed crank so I assume that is the reason for the external third bearing.