Sir, I'm a Harley Engine Builder but I actually repaired a similar crack for a fellow competitor one night at the dragstrip. The key is first stopping the crack from spreading by drilling a small hole at each end of the crack. I then ground a small V in the length of the crack to remove most of the damage area. I filled the tank with what little Acetone I had and turned it upside down, cleaned the tank out on the inside best we could. I took a small length of MIG welding wire and laid it into the crack, and proceeded to MIG weld the length of the crack. Yes, I always bring a portable generator and my little MIG welder to the races. We rinsed out the tank best we could with some race gas and oil mixed together and put it back on the bike. 3 years later and she's still going strong. I hope this helps and you have a blessed Holiday.
Sir, I'm a Harley Engine Builder but I actually repaired a similar crack for a fellow competitor one night at the dragstrip.
The key is first stopping the crack from spreading by drilling a small hole at each end of the crack. I then ground a small V in the length of the crack to remove most of the damage area. I filled the tank with what little Acetone I had and turned it upside down, cleaned the tank out on the inside best we could. I took a small length of MIG welding wire and laid it into the crack, and proceeded to MIG weld the length of the crack. Yes, I always bring a portable generator and my little MIG welder to the races. We rinsed out the tank best we could with some race gas and oil mixed together and put it back on the bike.
3 years later and she's still going strong. I hope this helps and you have a blessed Holiday.
I thought about it briefly before buying a used 1. You sound highly skilled.