Engine no 2

So, with the first summer of turbocharging gone, the plans for next year were drawn. I could never make the detonation really go away, and I suspected that it was the result of a too high CR (the standard 9,2:1). The old block also had a possible small crack, so I decided to look for a "new" engine to build up.

I was lucky to find an engine from a 1987 Sierra 2.0i, very cheap. The good thing about the EFI blocks is that the casting is a bit stronger, it has an oil return port and the head is better. In fact, early Cosworth blocks is nothing more but selected EFI blocks (but with tougher internals).

Getting some lower CR pistons was not that easy - I didn't want to pay big money either. Finally I resigned to using used Granada automatic pistons (the auto Pintos had 8.2:1 CR), and just honing the block. Not ideal, but it had to do. Of course I used new rings, and I also got a high pressure/high capacity oil pump. The head also got some work done, and I took the Hedlund 206 cam from the old engine.