hi all,
being reading this thread with intrest, i used to go sprinting in the uk, lyme, saltburn, houghton castle, etc.have 3 bikes with bsa plunger engines in, favirite is a norton navigator with 500 engine.
i also have a royal enfield gt with a very much modified a7 plunger in it heres the spec
a65 crank, was worn out so was reground to suit triumph rods , t120, only needed small amount of material removing then std shells fitted. i fitted the roller bearing to bush side at same time, fitted rocket 3 pistons, with spitfire cam, had to recess the piston cutaways to get clearance, and fit 3mm spacer under barrel, i removed the camshaft retainers to allow tappets to drop, lengthened pushrods, bike goes likehell hope this helps charlieb
never knew a 358 cam exsisted, over here only got 356,rocket,or 357 spitfire would like to see the profile of a 358 or even buy on charlieb