suzukitom wrote: ↑Mon Jul 20, 2020 5:43 pm
you might want to monitor excess crankcase pressure . I have seen this done with a pressure gauge line plumbed through a fitting threaded through the oil filler cap.
I think I have the crankcase pressure under control now. If I was running more horsepower I probably have to run a new port from the pan up to the catch can system.
I’m measured the total drop from the bottom of the turbo to the top of the return fitting in the pan and it is only slightly more then 2″. I think I can raise the whole manifold by an 1″. I really think this is the cause of the residual turbo smoke. Since I don’t really want to cut up my manifold I’m going to try it with the new banjo fitting/ restrictor that I got. I cleaned the housing down and began reassembly. If I’m lucky the PCV system delete will have solved the turbo smoke. For now I’m going to leave the turbo blanket off so I can monitor a lot more closely.
I widened the wastegate port and trimmed the wastegate wall today and think I discovered the cause of the intermittent oil pressure gauge. Either way I’m installing the analog gauge in the oil pressure switch port and will temporarily run that into the cabin to monitor while driving.
If I do end up raising the manifold up an inch I will also have to add an inch to the downpipe. The good news would be that it would give me a lot more clearance at the bottom of the turbo from the engine mounts and allow me to run the oil filter in the stock position if I wanted to.