Saito FA-91S GK Four Stroke Engine Setup Prior to Run Part 1 of 3

[@jurgenblume5179]

Great video as always David! Much appreciated. Just for the modellers interested - Recently, I received a four-stroke engine from a different manufacturer. Everything indicated that the engine was brand new. There were two issues left: - To make sure that all fasteners are tight, I re-tightened them. I turned out that some of them were loose... o_O - Then I heard a slight "click" when turning the engine over. I suspected the piston touching one of the valves. So I opened the cam cover and couldn't see the mark indicating the correct timing. As a consequence, the cam gear must have been mounted in the wrong orientation so I changed it to the correct one. Without these checks, the engine could have been destroyed on the first attempt... Lesson learned for me - Even a new engine can be assembled the wrong way, or, as you stated, the previous owner can have messed things up...

[@dmrcflyr2]

What manufacturer? I would guess probably ASP/Magnum or some product from Sayne, right? I have yet to see a manufacturing issue like that on any OS or Saito engine that I have ever owned NIB. Besides you can't just remove a cover and verify the timing on a Saito engine. It require near complete disassembly to check the timing.

[@jurgenblume5179]

It is a Thunder Tiger F-54S I got "used" from someone who sold the estate of a fellow modeler and engine collector who passed away recently. Because the history of this particular engine is unknown to me, I assume that it could have been torn down and reassembled in the past. I just don't see any purpose for that. If I had bought a new engine, I would leave everything where it is IMHO...

[@dmrcflyr2]

@@jurgenblume5179 Yes, I see. I do have a video on what to look for when buying used engines before and after the purchase. It touches on some of the things you have mentioned. kzbin.info/www/bejne/sIivq5uljJeqia8

[@jurgenblume5179]

Anyway, your videos extended my knowledge about model engines significantly in a practical way and motivated me to dive deeper into this stuff. So it helps me to maintain this wonderful hobby of RC-flying. Great job! I think, it is always the best thing to learn people how they can help themselves. Another engine of the (hopefully not to soon) dying glow species saved. Thanks!

[@paul340mopar]

David, Thank You for taking the time to break-in my engine and teach us all about the process. It has been an Honor to have my engine featured on your channel. It has arrived home safe and sound. Thanks Again.

[@dmrcflyr2]

That engine is a beauty and one to be proud of as those are very hard to come by now. Treat her well.

[@easystar123]

Brilliant video and well explained.

[@craigjohnson2009]

Great idea for a series of videos. Everyday I look with anticipation to see if you have a new video. You are one of my all-time favorite you tubers.

[@luisgarza2036]

Great procedures to a successfull inital run of a new, or recently repaired engine.

[@remkojerphanion4686]

Beautiful engine! I wonder if the Saito engines of today are any better than this one from the 90"s?

[@dmrcflyr2]

Highly unlikely that they are better. As time goes on quality gets a bit worse. You cannot beat the 90's version Saito's