1986 suzuki sp200 gas tank help?

Question

im gonna buy this dirt bike off someone, it doesnt run because the gas tank rotted out cause its a metal tank, what would be the best bet for me to fix it cause a new one is expensive, i was jus gonna have my bro weld sheet metal on the bottom of it but idk where you put the hole on the bottom of it for the petcock to connect in it, and im not sure what else u need for the petcock to fit into the tank,(like is it jus a hole or do u gotta put stuff around the hole to seal it and stuff) and i already know wat to do bout the rust inside it ive already got that taken care of, i jus need help wit installin it properly, if u could tell me what to do instead of tell me to take it to a welder or something like that cause my bro's got all the stuff to weld it and he knows pretty much wat hes doin, hes not a professional or anytin but he knows that basics.

heres a pic of it

http://s342.photobucket.com/albums/o419/extremetree/?action=view&current=GetAttachment1.jpg

Answer 1

no no no... if it's already rotting you need to just get a new one (anyway you could retro-fit a plastic one on it, like on bikes today? that should drop the price a bit) but since it's already rusting, it's just going to continue to rust... your idea would work to hold the gas in the tank... but you're not taking into consideration that it will still continue to rust on the inside, and peices of that will go through your engine the same the gas does (you could use a fuel filter, but that's not gonna keep it all from getting to your engine.)

could post a wanted ad in your craiglist area asking for a cheap used tank someone might have laying around.... if you look long enough you can find nearly anything at rock-bottom prices on there.... most people sell stuff and aren't in a hurry... but good portion are looking to get rid of whatever it is ASAP (most likely they're moving)