a few thoughts on engine oil

a few thoughts on oil filters

high oil temperatures in small radial engines

jacobs baffle modifications

jacobs engine exhaust valves: problems and remedies

the jacobs engine fuel pump adapter

jasco alternators on jacobs engines

lycoming r680 service bulletins

magneto timing: internal & external

shielded ignition for stearman aircraft

shielded ignition for the r680 lycoming