Whats a good redline for a 1600 motor? Have you taken a look at the redline in a stock late 105 1600 GTV or Super? But what do they know right?
You take a bunch of 40 year old design parts, if not 40 year old parts and "balance" them and think 8000 rpm is reasonable. You deserved this break in your racing schedule!
If you want these motors to run over 7000 RPMs you need good quality race components.
Lighter stronger rods and pistons. Note to you, the 1750`s pistons were heavier.
If the oiling was the problem the earlier track time would have been cut short.
When you first felt a drop in power you should have cut the motor & pulled over. You might have a motor now to rebuild.
Did you dyno the motor to see where your power band, fuel mixtures were?
Who built this motor? Did You?
