I need to make a special reamer, and any advice from the group would be much appreciated.
I've been asked by a friend to ream the oilite bushes to size in the rear suspension arms of a classic Mini Cooper. For those unfamiliar with Minis, each rear suspension arm (cast iron) has two bearing points about 6 inches apart. One is fitted with a needle roller, the other with a thin wall bronze bush. A ground spindle fits the two bearing. From memory the needle roller is roughly 15 mm diameter, and the bronze bush about 20mm diameter. When the bearings and spindle are replaced, it's necessary to ream the bronze bush to size. As I understand it, the hand-operated factory tool has a long pilot which fits the needle roller, with a reamer section on the other end. Needless to say, this tool is VERY expensive, and purchase is out of the question for one job.
Can anyone offer any suggestions or tips as to how I might go about making a suitable reamer in my home workshop? I have reasonable collection of machines and associated tooling (lathe, mill, T&C grinder etc).
TIA
Mike