I am hooking up my ball bearing turbo, its a COMP76. It has a very tight fit from the compressor housing to the T4 flange. I had to fabricate a drain back fitting to get me from the oil output port past the T4 flange. It narrows down to somewhere between 3/8 ID and 5/8 ID. I know most run a -10 return line, so I am really concerned that the oil will not flow out quick enough and be cooked inside the bearing housing.
This turbo has a internal oil restriction on the input like most BBs turbos, so I am thinking if less goes in then maybe less will need to go out.
Also, I just can't imagine why it would need a -10 for the return. I know the oil return is mostly gravity, and you want as low as pressure on the return, but I still can't reason it.
This turbo has a internal oil restriction on the input like most BBs turbos, so I am thinking if less goes in then maybe less will need to go out.
Also, I just can't imagine why it would need a -10 for the return. I know the oil return is mostly gravity, and you want as low as pressure on the return, but I still can't reason it.
