I have replaced my turbo coolant hard line due to it constantly cracking right at the first bend after the banjo bolt. They usually last around 3-5 months before cracking again. Is their an underlying issue here or should I just switch it out for a SS line?

It's a 84mm journal red for what it's worth.

 

Is the turbo/O2 housing supported and bracketed to the block?

 

That's got to be the weirdest thing ive ever heard...I just recently upgraded my coolant lines after using just normal coolant lines from napa with only one crack after 3 years of use...only thing I could think is your temps might be running very high that could cause quick degredation of the lines?

 

I don't have any bracing from the turbo system to the block but vibration would be the same on that line as it is on the turbo, manifold, o2 housing, and downpipe.

High temps might be a cause of it I'm running a half radiator and the temps run higher than traditional +/- 180*

I'm thinking of changing it out for a braided line to see if that does anything.