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Crank bearings ...all the same?

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I'm not sure excactly what your asking as the Briggs don't use an insert on the rods like Onans or other automotive style engines do. Is the crankpin diam. the same? I'm not sure between the 10's 12's and 16's. But it does increase some from the much smaller engines like 5hp compared to a 10 or 16.

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If you've got rod knock, and it's not something like carbon build up, then yes a new rod is certainly a starting place. The other problem is if the rod has lost a bolt and the cap is flapping on the crank I'll just about guarantee the crank is now worn eggshaped and will have to be replaced. There are undersized rods availiable and a good shop can turn a small crank like a big crank but it'll be costly.

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For the poor folks like me, you could try filing the rod and cap a bit, being certain to file the surfaces evenly. I use an old babbit file to do the trick. This has saved me countless rods. Such filing is a trick on the newer Briggs rods that have all the locking/mating recesses, or those indentations that make it impossible to put the cap on 180 degrees offset. This trick is not for the occasional tinkerer, however. If there is too much wear, a new rod is the only way to go.

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