Where are the better places to find Hp in these engines?
Compression is the Holy Grail!!
More is always better. But it doesn’t take much carbon build up to get you under on the CCs.
You want other places, how about jetting. Going from a .039” to a .040” jet is more than a 5% change in area. If the air density changes 5%, that’s just what you need, but what about all the steps between, or over. And who has ever flow tested their jets? I’ve never heard of anybody doing that!
I was part of a team building a rocket engine for Bob Truax. We had 200 jets made and we flow tested them. Even thou they where made with high precision Swiss CNC laths, there was a big difference in flow. We tested every one of them and found a huge difference between them. Well, huge as far as rocket engines go.
It would be interesting to see flow tests done with these jets that are “drilled” out for use in karting.
Comments, compliments, criticisms and questions always welcome.