It is worth considering upgrading the original rocker box. As the original rocker box was flawed in design and resulted in oil leaks, the South Australian Police Force mechanics designed a leak free rocker box which was then used on all police bikes. The Australian Ariel Register commissioned a pattern to produce the police force upgrade and has produced a couple of batches of the rocker boxes. Unmachined boxes are available at $225au. (about half that in GB pounds) http://www.australian-ariel-register.com/default.html
chris.shearwood wrote:Hello Paul,
I like your idea of a line reamer tool. What clearance do you intend to use between your timing side bushes of leaded bronze and the crankshafts' journals? And how would you measure it? Bore gauge? Internal micrometer? I understand that the 1.5 thou used with Babbitt material may not be sufficient with the lead bronze. I suppose the use of a Morgo pump may make the tightness of this dimension less critical?
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