Nagilum hat geschrieben:I wonder about the rings - where are they coming from? I doubt I've seen that before.
And there are 2 scratches one is straight, as you'd expect if they have contact (shouldn't be?) - but the other is slightly curved. You know what caused that?
Overall: I'd say the engine looks rather good for the power you squeeze out.
Hi Nagilum,
Piston rings are from Wiseco, came with the pistons. I believe that the scratches are from dirt or sharp edges during assembly. So basically my own fault.
Some speculation regarding the corrosion in the engine block is that it's due to the fact that I run alcohol fuel (E85). Some suggestion from drag-racing forum is that when running alcohol fuel you should not start the engine for short intervals. Like when I start the engine only for moving within the garage. If doing short starts, moisture is formed and due to the long intervals between running the engine cylinder walls starts to corrode. I believe this can be correct, I have noticed that during the first 5-10 minute of running the engine water/steam is coming from the exhaust system.
I also have relatively short connecting rods. This could be contributing to wear on cylinder wall.
It will be interesting to see how the engine looks after another one or two seasons of running at these power output.