Is there a mathematical way... or an online calculator to figure out what kind of flow to expect from a particular nozzle size based on pressure?
I'm running a mechanical preturbo AI system that is used by pressurizing a tank. It's used with boost pressures between 15 - 20 psi. The nozzle is rated at around 380 cc @ 20 psi. I was planning on increasing the nozzle size to somewhere around 0.03125" - 0.4" (1/32" -1/25") to get more flow. I was reading the nozzle size sticky and read that the .9 MM (.0354") equates to the M5 and flows 316 CC/Min at 100 psi. I also found an old post by rotary racing that said he modifies his nozzle tips to about a 1mm opening to give around 700cc of flow @ under 20 psi.
I don't know the exact size of my nozzle but I'm pretty certain its not bigger then 1mm. So something isn't quite adding up. If my nozzle flows 380 cc at 20 psi, and rice racing's is 1mm (.04") (the M7 is .045") flowing 700 cc 20 psi, then why does that chart in the sticky show the same size nozzle (M7) flowing only 442 cc at 100 psi? That's a HUGE difference in flow for the same size orifice, especially considering the nozzles rated at flowing much less, are at a much higher pressure. 20 psi vs 100 psi
post #23 (size/chart sticky) AI NOZZLE/JET/ Delivery Sizing
Post #5 RR modified nozzle Best set up with HKS single TO4E??