Okay I am new....to this forum and scootering in general. I bought what is purported to be a 1967 Vespa SS180. I don't really care if it's real or bodge or not. I realize it's probably not real. I've gone over it and it's sound - all the welds etc.. I've checked the engine case stamps and it appears to be a 180 case. When I got it - it had the wrong spark plug - about 3/8 inch to 1/2 inch 'too long' in the threads. I could see fouling on the plug threads - hard to start etc.. Got that sorted - but makes me think the piston is wrong. I don't really have the power I would expect from a 180 cc (even a tired one). It'll do about 70 km/h (I'm Canadian - so around 42 - 45 mph). I got a bunch of questions but for now I'll stick to two important ones: 1) I keep blowing light bulbs - it's been converted to 12 volt (as I found out after ordering 6 volt bulbs and THEN tested voltage - this is a 'non battery' model. Any suggestions? I went to a LED Tail light rated for 14 volts and it's fine but the headlight is a problem. 2) Rather than doing a 'rebuild' on the ancient case - can I buy a new / modern engine and just swap it (then rebuild the old engine at my leisure while still enjoying my scooter)? I would want something 150cc - 200 cc. with thanks!!!
-- So I want to know what kind of engine will fit the frame with minmal alterations etc..
PPS: I am not yet a 'purist' - I have what I can afford and I like it. I just wish it was more reliable / less worry.