The idea is pretty clear. To maintain the BMEP at 14 degrees ATDC for as long as possible at the end of the powerband.
The theory is that the steady timing retard post powerband allows the deflagation to continue into the exhaust, which progressively heats up the exhaust and increases the speed of sound proportionally. This allows the returning pulse to still be at the right time to keep the power on pipe.
Requirements; A very tight squish clearance, Variable ignition timing, a decent expansion pipe, an insulated exhaust.
Didn't get much time for testing but first go out with the timing at 23 degrees on an 8 degree curve, she did 200rpm more in 4th gear than before. Not bad. Something in it for sure.
When I'm back home (few weeks) I'll continue fiddling with the timing and Kytronic curves but when I'm done I'll do a video of how she goes.
Last edited by Jack221 on Tue Nov 26, 2019 1:06 am; edited 7 times in total