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Chinese rods quite often need so much work done to them you end up spending more than you would have to buy decent ones.
You don't hone the big end tunnel to get the correct bearing to crank clearance.
You need to get the tunnel within spec you so have the correct crush on the bearings.
You then select the correct grade of bearings to suit your journal or grind the journal to suit the clearance you want to use.
Rob
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