Engine Ping
#11
Sorry, but pinging (detonation) and pre-ignition are two seperate entities, similar but not the same.
Detonation is the spontaneous combustion of the end-gas (remaining fuel/air mixture) in the chamber. It always occurs after normal combustion is initiated by the spark plug. The initial combustion at the spark plug is followed by a normal combustion burn. For some reason, likely heat and pressure, the end gas in the chamber spontaneously combusts. The key point here is that detonation occurs after you have initiated the normal combustion with the spark plug.
Pre-ignition is defined as the ignition of the mixture prior to the spark plug firing. Anytime something causes the mixture in the chamber to ignite prior to the spark plug event it is classified as pre-ignition. The two are completely different and abnormal phenomenon.
#12
#13
#14
#15
Detonation has a deeper knock to it, pinging is a higher pitch.
Pinging is caused by a combination of ignition timing, octane and mixture. A lean mixture takes longer to get burning. Thats why the ignition is advanced at part throttle when cruising (lean mixture) and retarded when the throttle is opened (rich mixture to make power).
When it was stock my king would ping at full throttle when below 3000rpm on 95 grade petrol, it was intolerable with 89. I had to run 98 in it to get it to stop. I dont think you guys in the US even have 98. My bike is HDI, i think it runs a different tune to the US bikes.
Bottom line is the computer is running the motor real lean at part throttle for better economy and better emmissions. Get the computer to throw a little more fuel in.
Pinging is caused by a combination of ignition timing, octane and mixture. A lean mixture takes longer to get burning. Thats why the ignition is advanced at part throttle when cruising (lean mixture) and retarded when the throttle is opened (rich mixture to make power).
When it was stock my king would ping at full throttle when below 3000rpm on 95 grade petrol, it was intolerable with 89. I had to run 98 in it to get it to stop. I dont think you guys in the US even have 98. My bike is HDI, i think it runs a different tune to the US bikes.
Bottom line is the computer is running the motor real lean at part throttle for better economy and better emmissions. Get the computer to throw a little more fuel in.
#16
#17
I am straight into 6th at 55 when cruising, i wouldnt cruise at 70 in 5th on the freeway if I was you (worse fuel economy and more wear). Thats just me. Run higher octane or retune and add fuel imho. These bikes are a tractor and should pull from 1500 in 6th if tuned right. The TC96 has a 4 3/8 stroke - thats longer than a 454 chev. There shouldnt be any need to wring its neck if it is tuned right.
#18
It was a perfect day for a ride so I decided to head west to Hagerstown which meant some highway and 70+ mph. The only thing I experienced was what I believe was an "engine ping" when I get into 6th gear around 70mph and the engine feels like it is lagging. but when I down shift back to 5th engine sound smooth and the throttle response is great, now in order to maintain 65mph I am high on the rpm around 2500-3000 more toward 3K.
Is it posible to experienced pinging at that speed? what harm am I inducing riding at such high rpm? I almost have to be around 75+ in order to kick it in 6th gear. Is this normal with the 6th gear with several minor MODs on the bike: true dual, custom mufflers, Zipper hi-flow air cleaner and thunder max with auto tune.
Is it posible to experienced pinging at that speed? what harm am I inducing riding at such high rpm? I almost have to be around 75+ in order to kick it in 6th gear. Is this normal with the 6th gear with several minor MODs on the bike: true dual, custom mufflers, Zipper hi-flow air cleaner and thunder max with auto tune.