Ref your comment "A max power tune is not the way to go. (Thank you!)"
Go to the first link below and read it
very carefully, especially the chart that he comments
"DO NOT just skip over that chart"Pay special attention to how little power changes as you get into dangerous territory for heat load on the engine.
The chart was developed for aircraft engines but the physics behind it are universal. In this case it talks about cylinder head temp (in an air cooled aircraft engine)
for water cooled engines that translates to cooling system load and piston top temperatures. It is directly applicable to air cooled motorcycle engines. Same goes for exhaust gas temps. they peak way lean of best power and you can get the same power on the rich side of that best power hump as you can on the lean side.
http://www.avweb.com/news/pelican/182084-1.htmlAlso take the time to wrap your head around this article on detonation.
Keep in mind these were developed for aircraft and they have some jargon you need to understand. They usually have fixed ignition timing and perform in flight tuning by changing the fuel air mixture, and they make adjustments as lean of peak EGT (LOP) and rich of peak EGT (ROP) as that was a convenient measuring point with their instrumentation. They do that by closely monitoring cylinder head temp(CHT) and also (EGT) which in a water cooled engine is roughly equivalent to cooling system heat load and piston top temperatures since the liquid cooling holds a more or less uniform temperature in the cylinder head. Likewise high EGT's lead to burned pistons and valves along with detonation risk. So tuning for 25 deg lean of peak would be a mixture that is on the lean side of peak EGT by 25 degrees. Notice on the chart that there is a fixed relationship (on a given engine with a given timing) between EGT and CHT and power. Once you know one you know the other three as long as you know on which side of the hump in the curve you are on.
http://www.avweb.com/news/pelican/182132-1.htmlNote in this link that there are safe rich mixtures and safe lean mixtures for detonation and at high power levels an island forms in between them which is a no go zone due to detonation risk. In that zone if you are in the safe lean mixture range and try to cool things down by enriching the mixture slightly, you could suddenly find yourself in serious risk of detonation, which is counter intuitive until you understand that chart near the bottom of the article.
Happy hunting and good luck with your project
