NeroGuzzi
Cruisin' Guzzisti
vivo said:Hey there Andrew...
Excuse if I missed something....
Much of what you've done has been based on assumption. The oldest posts if I remember were less conclusive as to pinging... I may be wrong
If it were me I would try to eliminate the noise, which is pinging as you have said. If higher octane is a fix why haven't you started there? If a higer octane can reduce or eliminate detonation then it stands to reason you need to prove you can stop the ping. This is where I would have started. I would want to know if it is pinging and I would want to know what fuel quality means to the situation...
Have you considered a homemade cool can. Will it cool the fuel enough to help? Is it possible to cool the fuel thus reduce engine heat if only as a trial?
I have to wonder why some bikes might ping but others do not? I can understand the climate the bike runs in has an effect, elevation, fuel quality, rider input, and set up. I have a harder time understanding why combustion chamber design even accounting for variation in bikes allows some bikes to detonate but others to run without problem and given this isn't really a small issue I wonder why a manufacturer would allow engines to reach production that have the ability to self destruct? That doesn't make much sense it me so if I am assuming it is not related to combustion chamber design then it must be something else? Timing is more reasonable an assumption but it might be anything? So I am wondering why you don't remove the easy stuff first before re invention of the chamber design?
Just trying to look at this with new eyes... duhhh
vivo
It's all good discussion. I have tried what I see as obvious. Fuels, plugs, TPS, tappets, wires, coils, and a few other things that I probably can't remember. Our high test fuels are 93 octane around here. The engine has never used anything less. The elevation here is 400 feet. This has been happening for so long, that I can't remember if on longer rides to higher elevations there was a difference. I may start gathering data for each time the sudden and severe pinging rears its ugly head. I stated in the initial post what were the known conditions during each pinging event. But, if the temp sensor I just ordered doesn't rectify the problem, I will start logging as much data as I can to help narrow it down.
One thing I want to emphasize is how much improvement the PC5, ECU flash, and AT have done to improve the engine performance. It truly transformed what I would describe as a lazy engine. The engine is explosive with throttle input. The power curve much more linear. I love it and can't imagine the bike without it.