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Mixing 201 Connecting Rods and Caps |
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wjohn
Orange Level Joined: 19 Jan 2010 Location: KS Points: 1911 |
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Posted: 1 hour 49 minutes ago at 7:29pm |
I've been struggling with new con rod bearing clearances in the WD engine I'm rebuilding. Crank was ground .030 under and is right on the money, but a couple of the rods give me .001-.002 INTERFERENCE when I torque them down and measure with a dial bore indicator set to a micrometer for the corresponding journal on the crankshaft. Swapped in several new sets of bearings with no change.
For kicks I grabbed a random cap off of a junk set of rods I have, and voila, the bearing clearance is spot on. I'm thinking there's something up with my engine's original caps. It looks like my options are to either have a machine shop resize the connecting rods, or swap the caps from the bad rods onto these rods. Is mixing and matching caps acceptable or not?
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1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45
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