Hey all, I've recently picked up a '91 SW8 that will be getting a turbo manual swap in the next year or two. Im a big Volvo guy and really like the looks of the N9T on paper. Ive read a few threads about people building them up with Volvo pistons and Saab rods, they're closed deck, the port shapes in the heads are nice too. This is freakin awesome. But it appears as if they all have issues with the heads cracking... I LOVE making good power on unusual engines and keeping the original drivetrains in cars. But head cracking, to me, is a dead end. I'm not going to build an engine thats going to crack heads, I will swap a better engine in at that point. My question is, it appears as if Politecnic once made heads for these cars? Do these have the same cracking issues? Is the cracking due to a poor design or due to poor castings?
Really excited to made this amazing breadbox fast! I appreciate any help!