Hi all, Been reading the above with interest. My 53Mk1 has the original oilpump fitted, though the total setup has been modified (by the previous owner) My SQ4 has the complete oilflow for the bottompart coming from the oilpump, where the oilflow for the cylinderhead is delivered by the return/scave...

Hi Mark, just read your message, and I know what you mean. I recently acquired a 1948 KH 500 twin engine, in parts, and with it came the original camfollowers, as described by you. According to the previous owner, an expert on Ariel engines and mods, this was a feature that only the 48 engine had, a...