I just finished up most of my intercooler piping with a mig welder I rented. After I grinded some of the welds down I noticed a few small holes. My question is will JB weld be good enough to patch the tiny holes or should I haul my pipings back to where I welded them and rent the welder again for $10 for an hour?

 

personally id re-weld them.

jb weld might work out ok, but welds are just more of a sure shot.

 

I put jbweld over all of my welds. Now that I'm a bit better at welding, I probably won't need to but the JB is holding just fine.