Slant 6 Turbo 68Dart Project
The manifolds are cranked down together at the same pressure as the manifolds are mounted to the head - about 10'lbs. I reassembled the whole ordeal and now the motor doesn't sound like an aircraft trying to take off and is quieter.
Originally the underhood area got smelly and loud, and I had to roll the windows down to cut the smell, so I figured there was a leak - because this has happened before with the old manifold. The new gasket is in place and now hot exhaust is no longer blowing out from between them. The exhaust is now escaping through some kind of pinhole between the turbo and the turbo bracket. It is a tiny tiny jet stream of air, so I should be able to utilize the turbo now, and there is only a slight tiny leak. This other one was gargantuan. There was a nice black stain all over the side of the head and block behind the manifold. I will take it out in a bit and see if I can finally make some pressure.
THis makes about the 12th time I've removed the manifolds from this car, I'm starting to get pretty good at replacing those triangle washers underneath the manifolds.
Also this problem would make sense since originally I was making about 2psi then when I swapped J pipes it didn't make anything. I think after time the RTv I used to hold the Manifold riser gasket on blew out and then just started leaking. This was also evidenced by all the RTV copper on the bottom of the intake manifold. Hopefully this was the issue and I can move on to tuning. I still don't know yet. I will report back after a short drive later tonight.