I'm going to be putting my bigger carb/exhaust (thanks Treats!) on my 1978 Tomos A3 Bullet that somebody put an A35 top end on. I've heard the A3 Bullets were able to have lower/higher performance models by just changing the length of the piston skirt and trimming them makes them all essentially the faster model.
First, with an A35 top end is this even relevant to me? If it restricts the intake port, if the A35 has the intake in a different spot I'm not sure if it matters. FWIW the original owner started this A35 conversion but looks like they stopped as there was no intake or carb and the ignition wire was cut with no boot and no spark plug. I'm doubting they swapped the A3 piston out.
Is there any before/after pics? I'd like to compare it to mine but I can't find any pictures or a guide of how much or where to trim. If I do it I'm thinking an angle grinder followed by files and steel wool to clean it up?
Thanks in advance. I searched here and google and found nothing other than people saying they did it. I've always had fun working on things with wheels and engines but this is my first moped.