I have a Saito 65 engine and my problem is, how break-in this engine?
Thank you

Run it a little rich for a few tanks. (Have the high speed needle out a ways from where the motor would run a smooth peaked out high speed.) You always want to see a smoke trail behind it. Don't run it wide open continuously until after three or four tanks. After the first tank. Start trying to figure out where your needles are at. Start trying to set them.

Enjoy,

Jim

Thank you for your reply Jim.
This is my first saito engine.

The 65 Saito has an abc type cylinder - piston assembly so to speek but it has a ring on the piston. You will need to wear everything in to itself to decrease friction. The ring will fit itself somewhat to the chromed cylinder.

These engines don't require a lot of break-in. Once you get the needles set, put it in the air but don't run it wide open all the time and don't forget to have that smoke trail always.

enjoy

Jim

Thanks again Jim.

I think they say 5 turns out on the main needle, and to keep it under 4000 RPm for the first 10 minutes.....

I personally run it under 4000 for 20 oz's of fuel, (which is well over 20 minutes) then varry between 4000 and 6000 (1 min at 4k, 1 min 6k, 1 min 4k etc.) for another 20 ozs. Then on the third tank I start turning in the needle to 4 turns (usually stilll very rich for a Saito) and give it another 4k/7k RPM cycle changing it every minute.. On the 40th 20 oz tank I refine the main needle and leanout the idle needle...give it varying RPM's from wide open to idle...getting that good heating cooling cycle. After 80 oz's I put it in the plane and fly it.... I've never had a bad Saito and they all are incredibly strong. I've got an 80 GK in a Cub that's around 10 years old..... all it's ever needed are routine valve checks and a new OS F every season.... I'd have to guess that it has around 1000 flights and still runs great.

Thanks HighSierraHelis