Rad now not leaking but looking at this fan mounting design I am going to change it.
The cooling area lost to the fins from the fan and bracket is significant. I am sure it probably would be ok but it would be a lot more efficient if the fan was moved behind the rad and changed to a pull type. I am also going to nake a cowling to direct air flow.
I also decided that I am going to register this build on a Q plate as I wont need a cat as the emissions test is visual smoke and also won't need a lambda sensor, more weight saving. I can also tune my map for best performance.
I already have a cat built into the silencer and may need this for IVA, not sure what they test at IVA on a Q plate?