Quote:
Originally Posted by cleanspeed1
|
The link added this to the explanation:
"High ratios place the available oxygen and fuel molecules into a reduced space along with the adiabatic heat of compression -
causing better mixing and evaporation of the fuel droplets. "
This statement implies that lower compression ratios do not adequately atomize the fuel/air charge. I'm wondering if there is something being left out of the explanation. Perhaps the increased pressure and heat also causes a more rapid burn, and therefore the expanding force has a longer stroke (duration) to perform work? After all, burning gas the moment before the exhaust ports open would allow only a very short duration for useful work to be extracted.
Setting this topic aside for the moment, I'm wondering what kind of real world efficiency gains I can expect from installing a turbo and swapping in a taller final drive. Of course the answer is that it depends, but I'm also considering a front grill block, and I wouldn't run a grill block if I had a turbo. So would I likely get more gains from a grill block, or from a turbo/gear install?