Originally Posted by Caddyshack

Surely if you drop the compression just to achieve the power then you end up with a laggy and lazy engine? There are very few instances where it is all about peak numbers, it is how it behaves on the way to the headline figure, unless you are building a full on drag car.

I think that if you really want 700bhp then you have to be prepared to spend big, like cossy Dave has, engine fails...build it stronger with alloy block and arrow crank....if you plan to do it without the big budget then it could fail and when it does you end up spending more as you have the first build cost and then then the proper build cost.