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i have a blaster sitting around with a bad engine. instead of rebuilding it and only having 15 hp (or whatever they make) i was thinking of buying a 250f engine (not sure what manufacturer) and trying to make it fit. the only thing that is stopping me is, i dont know how to weld. im sure the ability to weld proficiently is a necessity and without knowing how it would be pointless to attempt. but its just sitting there, ya know. ive never done a swap of any kind so this is new to me. i assume the only thing that would need welding would be the motor mounts, oil reservoir, radiator and radiator overflow, right? i def dont wanna bite off more than i can chew, am i? i could probably buy another bike for what i would have tied up in the blaster. i read around on blasterforum.com and it looked like most people were using 250 2 stroke motors or 2 stroke 85's. an 85 is out of the question. i really dont want a stroke engine. having to mix oil and all that is just inconvenient. ive also thought about a 450 engine but thats kinda overkill and the maintenance required is kind of a joke. are 250f's as needy? has anyone done an engine swap on a blaster? any advice/input/dont do this cause youll hate yourself talk would be appreciated