gas tank repair

In the last few months i bought a 1983 kz750E,i just finished cleaning the carbs(6 hours worth)and moved on to the gas tank.I found a screw and washer in the verry bottom that was sealing a leak,the gas cap would not open but with a little work i got it open the pin under the lock was broken and i will replace or make a new one.On the inside of the tank i noticed it had ben sealed with a pinkish creamy colored epoxy type material.The question is does anyone know what this might be? I have heard about sealers for tanks but have not used them before.other than were the screw was the rest of the tank looks solid ( i striped the paint to bare metal) any help would be a great help thanks.

yeah its probably some kind of tank sealer.can you post a picture of where the screw is at?

my camera is dead sitting on the bike 3/4 way back on left side 3/8 inch up from the seam.

I was going to replace the tank but the last 4 i have looked at were in worst shape than mine hopeing i can fiberglass patch the hole and re coat the inside.with the stuf that is in there now it looks pretty clean.as i mentioned i cleaned the carbs they had alot of rust sediment in the bottom of the bowls.I think the tank was the problem.

i dont know about fiberglass . id remove the screw and rough it up really good in an area a couple inches bigger than you need and put a little ding where the hole is then i would either solder it up or find some gas resistant epoxy to fill it in with;)

thanks for the reply the epoxy is a good idea do you know ware i can get the sealer? and is there any know if i can buy a replacement gas cap mine is junk i could fix it if need be but the crome is rough to.It is rectangular in shape my 83 LTD has the same one on it.

auto parts store should have some epoxy that will work,put it on smooth as possible to save you some sanding;) im not sure if you can put sealer over sealer.if inside of tank is clean and not flaking id just run it;)

If its pinkish white then more than likely it KREEM a brand of takn sealer. I'm with the epoxy sealer if possable.. theres a couple of them that are a two part putty you mix and press in to holes to seal up car tanks with holes. Might look for some of that.

del