I just got a sweet deal on a big P40 that came with a Newer (1 1/2 gallon) Sato FA 220 motor. I would love to convert this big motor to gas, can any one point me in the right direction?

Thanks Mike

Though some might disagree with me, I am going to have to recommend against doing that. Even the Saitos converted to gasoline from the factory have been problematic and tend to run hot. I know, it would be cool to have a gasoline four stroke that was light and "all position capable", but I really can't recommend this conversion myself.

Anyone else?

AV8TOR

I converted my FA 220A to gas. I would not recommend it and I would not do it again. Do a search on FG 36 problems (cutting out, sticking valves, etc.) They run great as a glow engine but have severe limitations as a gasser.

WOW, my Saito 91 runs great as a gasser. One key for me has been to never go leaner on the oil than 20:1. Also, I use ONLY the absolute BEST synthetic two stroke oils available. I run mine on the same 16:1 mix that my two stroke bushed rod engines are using. That mix is premium pump fuel 93 octane (not sure what I wind up with for octane because I remove the ethanol) and Redline Two Stroke Racing synthetic oil. Wear wise, other oils may be as good but NOT ONE has kept the engine as clean in my personal observations which may help explain why I've not experienced the valve sticking issue. Castrol RS TTS comes pretty close as does Stihl HP Ultra. Motul 800 is very close as well but the four strokes have been run almost exclusively on Redline.

I would also like to add that they do run hotter on gas as compared to glow fuel. Each of the engines I've converted has been different as to how much hotter. The 91 ran 260ish on a hot day here in good ole Houston town. (Love the hot humid days we get here in late summer) On gas it runs between 290 and 310 on my Tiger 2. (engine is completely out in the open, no cowl) I would say proceed with extreme caution if the engine is to be cowled as this could lead to excessive temps and that could easily cause stuck valves or other more serious damage. I've converted my 91, a 150, and two 180's. All run fine but are used in open cowl planes.

I have convert only one
The owner is the typical guy used to fly hours, he flies a cessna, he add additional fuel tank and his record is tree hours..
He bought previously the saito 36 fg, he says saito converted is same ore better. This saito converted has more than 40 hours fly. I
Excellent idle and excellent power , I dont remember well but I tested it with a 20X10 prop and around 6000 rpm Ill check it.

I recommend a lot convert saito 220

Regards Max

I converted a Saito 150 to gasoline. It doesn't seem to run any different than my Saito factory gasoline engines. I use Pennzoil Air Cooled oil at 20:1.

They are run in the open.

Mike,

Idid several conversions on the Saito. FA120s,FA125,FA150,FA180,FG20,FG30 and all work great.Use 20:1 oil. and C&H ignitions,Ihave a 220 that I work now on. Hopw in couple weeks I will have it running.

Adrian