July 28, 2001
Before we begin, let me apologize for the wonky color balance in this update’s photos. I had the white balance set wrong on the camera, and although I corrected it to some extent they still look a little weird.
Drunk with success from porting the turbocharger housing, I decided to match-port the exhaust manifolds too. Although the real-world benefits will probably be slight, I figured that since I was going to refinish the manifolds anyway, I might as well work them over internally as well. Here’s how I did it:
Unlike the manifold-to-turbocharger junction, I can’t simply use the carbon marks on the manifolds as a guide. That’s because they won’t be going back onto the same heads they came off of in the first place. Here, we can see that McCoy has done a little work on cleaning up the ports, and even if they were as-cast, they might be different from my old heads due to production tolerances and core shift.
