The oil mix should be at 80-1 with a good synthetic. That's what's stated in all the other Brison manuals that I have. It's also the mix that I've been using for a few years now with great success.

Temps at 200 to 325 will not hurt the engine, but temps at 250 and below are a lot better. At 375 and up damage will likely start to occur to the bearings and the plug wire. You may not notice it for quite some time, but it will have happened. There is no effective way to measure engine temps unless to have thermocouples attached to the head as close to the base of the plugs as possible, and are down loading that information or have a live telemetry system. Fin mounted thermocouples are next to useless. Temp guns are not all that accurate due to aiming point issues, and as soon as the engine is idled the temp drops extremely rapidly.

Start by choking the engine, turn on the ignition, set the throttle trim to high, place the throttle stick in the max low position, and flip the prop until the engine "pops" once. After the engine quits, open the choke, leave the throttle stick at max low with the idle trim at high and flip the prop another 5 to 7 times. It should start right up if the needles are even close. Make sure the plane is secure through all this!!!!!!!!!!

Pat

A couple of after thoughts here;

Tune the engine to run from the first run like you would want it to run a year from now. The Brisons' don't require being babied like some others out there.

Second, DO NOT run the engine at high rpm for long periods on the ground. By long periods I mean for more than a minute or two, MAX!! It should not be necessary unless you just want to "hear the music". High rpm is where the most heat is generated. Idle rpm levels can be run for considerably longer with no fear of damage. Let the engine cool between ground runs for at least 15 to 30 minutes with good ventilation. All ground testing should be done with the cowl removed for better cooling.

PR