know if any new ebay or amazon engines will fit?  im having lots of trouble getting my bike running so was wondering if anyones rocking new engine?  theres a 250cc on ebay for 350 and a 125cc for like 130 both brand new. then theres a used engine like mine for 500 plus tax n shipping comes to like 700.  i would do that but i dont have that much to put in although i think that might be a good deal if i could resale this engine.  im gonna try another carb first.  iv put a new cyclinder in and removed the decompression valve on head and put in a spark plug in hole.  i was hoping the decompression valve was my compression problem as im at 75 to 80 psi now instead of 50 psi.  i think i might of been trying too small of carb then i got a new vintage carb too but nothing happened.  now im gonna try a 34 something i think pwk carb with special intake boot. thanks for help

You have enough compression to get it to run and test it.

Fuel is easy, just spray a small shot of starter fluid in back of intake and I do mean a small shot or it could over-rev. If its the carb as you think, it will fire up for a sec.

Does it have spark? You mentioned your points were not opening. I would say start with spark first.

yea i got spark and i did timing with guage and multimeter. my dad sprayed too much starter fluid once and got a big back fire fire with the dt1 125-175cc carb on bike. so im a little afraid of the starter fluid now...

the 125cc is like 210 after tax dont know how i got 130. its measures are 470×275×280 mm but i dont know if thats with carb on or not. plus it would need muffler and spark plug not included in price. anyhow i would rather have a good vintage engine.
the 250cc says Product Size: 31.5*30.5*43cm/12.4*12*16.92inch. and it comes plain needing all other parts. feel like i would have to make mounting brackets if these engines would fit or not. feel like im gonna lose my mind measuring. i used to have a bike kit that was 80cc and i bet that would fit but no pedals to start plus it was a mad cheap engine and i want more than 80cc. eventually its gonna ride. right now its cold one and dark so i can talk more than work. thanks