Ridiculous engine, too many balance shafts, too much mass and too little power. As slow as many 400’s and as expensive to run as big fours but kinda laid back, cheap to buy and plods on reliably for the first 35-40k. Should be smooth but with a lot of grumbling, churning and rattling – if it vibrates harshly below 6000 revs then something’s about to break. Some lasted for 50k, so uses as hack.
1976-80, 738cc DOHC twin, 50hp 110mph 40mpg 500lb