Reply To: Identification needed for unknown engine

[andyfrost]

Geoff , there may be one minute clue there , the pic of what I’m assuming is a big end shell has the prefix 86 stamped into it.
86 was a prefix number used by BSA in alot of their part numbers , I may be miles of track , and it could even be a hepolite number.
I t would be well worth your while speaking to Paul Childs at Meetens , and quoting him that part number to see if it matches anything to do with BSA.

Andy.