Re: model B motor in model A chassis
Wen I put a ModelB engine in my Model A, instead of cutting the model B oil pan, I enlarged the semicircular opening in the rear of a model A oil pan to fit into the cork seal channel in the Model B rear main cap. Worked fine.
Model B oil pumps shaft were cut down to a smaller diameter between the upper and lower pump bearings to improve oil flow in the pump body. Model A shafts were straight.
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