Most people say you should run low compression on a turbo engine, but low compression makes for an inefficient engine, thus eliminating some of the benefit of a turbocharged small displacement engine. Ford's new Ecoboost engines run much higher compression ratios, and I am guessing that this is to increase the efficiency.
So, would it not be smart to boost compression, say to 9.5:1, then counter with a slightly bigger cam, thus reducing cylinder pressures likely to lead to detonation? Coupled with the stock IHI turbo on an '87-'88 set to 15 or 18 psi, this should increase power and economy. A bigger intercooler or methanol injection might be needed under full boost to counter boost induced detonation I would think, but I cannot think of any other reason as to why you wouldn't want to build an engine like this.
No, it would not be the best all-out power engine, but for a street driven vehicle, can anyone tell me why I am wrong in my assumptions?
Shiny Side Up!
Bill
The new EcoBoost is also Direct Injection which makes it possible for higher compression IIRC. Supercharged motors tend to do alright with higher compression as far as I have been told but I'm no expert.