Roger said:
I don't believe there was an OHC Triumph engine, was there?
I agree.
I also can't think of a 4 cyl 1600cc one either, the only 1600 was the early vitesse, and that was a 6.
Th only possible would be Triumph Acclaim, which used a Honda engine - could be that???
I couldn't work out from the photo what it was,