I remember seeing a Subaru at the shop I worked at break 800whp with a 6870 and thinking that was crazy for a 4cyl. That's nothing now days, it's nuts how much power your able to make from a 4cyl now with today's turbos.
Looks amazing Shane. Can't wait to see what this can do. Is that the main throttlebody on the outlet of second stage intercooler? There's a lot of science in all of this that's for sure.
Are you building boost with the main big turbo wastegates open then closing the big turbo wastegate to take over after boost has built? I’m not sure how I would tackle the map on this motor and all it’s wastegates. I guess spool the smaller ones as fast as possible maybe 1 at a time. Then open wastegates to maintain the boost. So awesome!
Shane I meant to ask your opinion on this. People say the only thing limiting power is the ability to keep the head sealed to the block but is that really true? Seeing as liquid cannot be compressed surely there would come a point when no extra fuel can be fit in the combustion chamber and hydraulic lock would be reached? Maybe no one has reached this limit yet but surely it exists?
The biggest deciding factor regarding making power, is the mass of air you can process through the engine at any given time. The greater the mass, the higher the potential output. Notice I said potential output. That’s because there are lots of mechanical limitations to the ability to continually process more air. More air mass per engine cycle may reach the mechanical limitations of the engine to safely combust without exceeding the strength of the components making up the combustion chamber and its links to the flywheel (head, piston, rod, crankshaft, cylinder wall and head to block sealing interface). Liquid compression will for sure overload the capability of the components mentioned. However, since we are using a fuel which requires at least a 3.5:1 ratio of Air Mass to fuel mass, we couldn’t possibly ever run in to a situation where we have a cylinder full of fuel that cannot compress. In fact even in a Nitro engine this nearly an impossibility unless something like the exhaust valve stops functioning for several cycles.
@@TunedbyShaneT Thanks for the detailed reply I'm fascinated by this. In the 90s I had a 3.5cc nitro RC car that produced 3hp at 35k rpm which I thought was very impressive. You are now exceeding that specific output in an engine magnitudes larger which I never would have thought was possible back then. Thanks for keeping us updated on this project.
@@johnwilson1794 while that is technically true, we have an advantage of a compressor (or 3 in this case) giving us 10 atmospheres of air to work with instead of just the 1 your RC car was doing it with.
