[Coultl]

The design of the turbo mount took a lot of work. The solution wasn’t obvious but I’m really happy with where it landed.

The mount bolts to the turbo with two M14 bolts threaded into the turbos coolant connections. These are big threaded connections to the core of the turbo. The mount connects to the engine via four of the valve covers bolts. These are M8 and thread into chunky aluminum on the cam house. I don’t love that the load is going through the cam cover gasket, but I don’t see any other option.

The thing that’s got me excited is that the oil drain is now integrated into the mount. The oil drain is sealed to the mount via an ID/OD o-ring seal. The mount is then sealed to the cam cover via the same rubber compression ring used for the oil pump / case connection. I only need to make a corresponding hole in the rocker cover. It’s all very compact. That said, there’s no drop and the oil has to travel across to the valve cover. Not ideal but these ball bearing turbos use so little oil (1mm restrictor) that I think it will be fine.