Editing Z31/turboswap (section)

== Exhaust Manifolds ==

Now lets move onto the exhaust manifold as this is the second most needed item to complete the turbo swap. The best thing to do is to use penetrating oil on each Left (US Driver) Side manifold stud and nut to break the bond the rust has on the nut. This Also applies to the two bolts and one stud on the crossover pipe. I know alot of times some of the studs are broken and you will have to remove the broken stud from the head. If this is the case I have had good luck using a reverse drillbit or easy out kit. I usually end up replacing all the studs anyway with the larger 10mm x 1.25 studs by drilling and tapping the heads for the larger studs used on the VG33E Engines Nissan produced.

Once you have the Non Turbo Manifold removed you will notice is the Non turbo placement of Manifold studs differs from the turbo version. Good thing Nissan did drill and tap the heads for the turbo exhaust manifold as well. All you need to do is remove and swap the studs into the correct location.

https://dev.z31library.com/xenonzcar_archive/z31/images/Turbo%20sw/manifoldstuds.jpg

I recommend using a Victor/Raines brand Exhaust manifold gasket as they are Mult-ilayer steel units. They will hold up better than the fiber type gasket.

So now you have the exhaust manifold installed you can then bolt on the turbo to the manifold. This is also the time you want to install the turbo oil drain as it's easier as you are installing the turbocharger to the manifold. Once the turbo is mounted go and connect the oil feed line on the top of the turbo housing and finally if you are using a water cooled turbo you can attach those lines and plumb them up to the locations at the throttle body and manifold.