WebSep 19, 2016 · YS Engines Support - Ys 91fz - I recently acquired a 91fz. what size is the exhaust header?im missing one of the lock nuts. what is confusing me is that there is a … WebMay 1, 2008 · YS Engines Support - 91AC or 91FZ - Hi Troy, Since both engines use the same crankcase marked 91AC, is there a visual way to tell the 91AC and the 91FZ engines apart? Paul
Nitro 4 stroke Engine Tuning questions (YS 91FZ) - RC Groups
WebYour Official Home for Pattern/F3A Airplanes, Equipment, and Accessories - The World's Best Airplanes from the World's Best Designers. Fly with the Best! Official Home of YS Engines! All Engines and Parts Available for Purchase. The ONLY Official YS Service and Repair Center in the USA. WebApr 2, 2016 · Play that funky music right. The YS 91 will produce power ( more or less) the same as a 120 naturally aspirated engine. It will swing a 15X8 at about 9500 RPM. The tune a bit different than your Satio but once tuned seldom require adjustment except for wide temperature swings or a change in nitro content fuel. greater than or equal to algebra
.91 Four Stroke Readings - Page 3 - RCU Forums
WebAug 7, 2016 · The fuel system of the YS is quite large compared to other engines so it may/will take longer for the engine to run dry. The running dry is the reason for the priming … WebYour Official Home for Pattern/F3A Airplanes, Equipment, and Accessories - The World's Best Airplanes from the World's Best Designers. Fly with the Best! Official Home of YS Engines! All Engines and Parts Available for Purchase. The ONLY Official YS Service and Repair Center in the USA. WebStripped Cyl. Head bolt repair; YS .63 or YS .63S; Saito 91s version 2000; YS63S PROP SELECTION; Bearings-Brass cage vs steel cage; 4 stroke timing; Wattage cap 232 and AP .09 -Prop choices; Irvine 53...I love this engine; Setting the throttle linkage; irvine 36 blast from the past; 0S .10 FSR -PITTS MUFFLER ? ys 120 ac won't lean out. Way too rich flip 2002