led-panzer's 1984 300D 4-speed
led-panzer's 1984 300D 4-speed
Yes you stand to make some gains on volumetric efficiency, which should help a bit.
Not trying to be a killjoy but I just ran through this and found I would need 4:1 PR to burn 120cc with optimal cooling and compressor efficiency. That was based upon VE of 85%, AFR of 18:1. Density is not an arbitrary number.
You could run more fuel of course, but it sounds smoky and Egt may be a problem.
Of course calculations can be completely wrong also. Look forward to seeing what it can do. But I would put some forged rods in the motor as part of the project. I guess that is my point: if you hope to burn all 140cc of fuel, you are talking amounts of boost known to be potentially problematic on stock rods.