Slant 6 Turbo 68Dart Project

jungles82 said

What kind of seat pressure are you looking for in the diesels we used to mess with we used 110lb springs I'm not sure if it was that over stock or what and do you have to run a Wastegate if your turbo has one does anyone have the layout of what a system looks like and what piece does like the bov Wastegate and what they do?

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The 340 springs work well, since they're plenty strong, up to about 15 pounds of boost. Their only real problem is, I found that they coil-bind at a pretty low lift, so I found a Crane 340 replacement spring that is only a small amount stronger than a 340 spring, but has a lot more lift capability, before it coil-binds. More than I need, but having that parameter built into the design of the spring doesn't hurt anything.

Unless you have the ability to design a system that has a built-in limit on how much your engine will "breathe", yes, you will need some sort of wastegate to keep the turbo from over-boosting the engine.

I don't understand "what piece does like the bov Wastegate and what they do?"

A "bov" has nothing to do with a wastegate. Did you want an explanation of what a bov does, and, how it's built? Fill me in...:)