- Jun 7, 2020
- KCMO, midwestern USA
Right, you plan to fly behind an engine that only makes the hp you mention at rpm above where most flight engines run. That means you need a reduction gear to get the prop rpm right. Those aren't common, you'll probably have to build your own, and that can run into many hundreds of dollars by itself. Tuning and tweaking will usually call for forged or billet racing parts. It just isn't as inexpensive as you think, or everyone would already be doing it. You can get crate LS engines for a reasonable price, but you still don't see them commonly on aircraft, because they still need custom reduction gearing to fly. Among other challenges, your modern computer-controlled engines will need all new control logic to manage spark timing and fuel flow. "Modern" as in anything made after the early 80sYes yes....but they run usually 300 000 miles. So plenty or hours left. Spark plugs etc must be new to get the mileage right but still something to work on...and tunable from 117 hp to 650 hp....with new parts and tweaking.