i turbo'd an m10, it worked well, the block was bored to 91.80 and used sierra cosworth pistons on modified m10 rods with an 84mm strokes14 crank to give 2225cc, it had 2mm oversize exhaust valves, schrich 284 cam, 318i inlet manifold with a big throttle body, a t34 turbo on a tubular exhuast manif...

Hey just joined the site. I'm seriously thinking of turbo'ing my '86 316. I using a 1.8 injection M10 engine. Has anyone here turbo'd one? Its for road and track use so I want to keep it drivable instead of going for all out power. any advice would be appreciated!