This page of my web site is dedicated to my engine rebuild project.  I bought this engine 25 years ago as a O SMOH by an AP mechanic.  It has served me well with 1100 hours of flying time but the oil pressure is down to 25 PSI, the large case stud that holds a cylinder down is pulling out and needs a helicoil so it's time for a bottom overhaul.  I've had my engine case open to install a pull starter and I've gone thru a couple of cylinder replacements but in the 25 years I've owned this engine it has not been rebuilt.  25 years, 1100 hours.  I expect this will be the last bottom overhaul in my life. Time - 0 hours Time - 3 hours below: Baffling, wires, oil lines, carb, spider, air intake tubes removed.  Basically the cylinders are now ready to come off. Time - 6 hours below Cyls pulled and the case on the bench for tear down. Time - 9 hours below  Case is disassembled and ready to ship out. So stay tuned for the exciting conclusion of "Mike Builds an Engine"....