E1453
17th Apr 2004, 02:00
Superior Air Parts is offering a new four cilinder I/O-360 engine called XP-360. It's based on Lycoming's O-360, with carburated and injected models.
This engine is interesting because it can use unleaded (mogas) or leaded gas. Althought it seems to have conventional magnetos, it's compression ratio is 8,5:1, the same of the old Lycoming's IO-360.
The only difference when running on mogas is that the max CHT is 430F instead of 450F.
How did they get this working without detonation, with a non-digital ignition and the same compression ratio?
One more thing: the factory says this engine can run lean-of-peak!!! They finnaly got it!!!
OBS: unfortunately this engine would be worthless in Brazil, because the mogas here is 75% gasoline and 25% ethanol. The same happens with Rotax, so I have to use avgas in an engine that doesn't need the extra octanes.
This engine is interesting because it can use unleaded (mogas) or leaded gas. Althought it seems to have conventional magnetos, it's compression ratio is 8,5:1, the same of the old Lycoming's IO-360.
The only difference when running on mogas is that the max CHT is 430F instead of 450F.
How did they get this working without detonation, with a non-digital ignition and the same compression ratio?
One more thing: the factory says this engine can run lean-of-peak!!! They finnaly got it!!!
OBS: unfortunately this engine would be worthless in Brazil, because the mogas here is 75% gasoline and 25% ethanol. The same happens with Rotax, so I have to use avgas in an engine that doesn't need the extra octanes.