Is there a engine register that would date my Tangye engine ??? I have searched the net but so far been unable to find info on my Tangye but plenty of info on all other Tangye's. She's, 5" bore, 11" stroke, horoz-single, side draft, serial # 17173B, weighs in at aprox 750kgs. Fly wheel dia 39"x4" She's about 98% complete in great condition. Email me and I can send you pic's if that will help date engine. Would be greatfull for any info possible. I have also restored my 1918 GMC Samson S25 sieve grip and always chasing info on Samson tractors. Thanks for casting your eye over these few words.