I have a set of Brodix -12 heads that were ported by Weldtech. I wanted to know about the heads. I got ahold of both companies and gave them the numbers stamped into the heads and they told me everything I could ever ask about and more. They were great.
Originally Posted by motorhead748:
Technically the stem. The lesser the angle, the straighter the path to the cylinder.
Thanks. I actually found a perfect diagram of that on the Net, tried to post it, but can't for some reason... "copyright" was mentioned
Since we're on "Dummies Guide to Sprint Car Engines", I have another question that I asked a few years ago & didn't really get the answers: Down nozzles: Do they carry pure fuel, or fuel air mix? If its pure fuel, doesn't that alter fuel/air mix? Do they compensate by running the injectors leaner?
Originally Posted by revjimk:
Thanks. I actually found a perfect diagram of that on the Net, tried to post it, but can't for some reason... "copyright" was mentioned
Since we're on "Dummies Guide to Sprint Car Engines", I have another question that I asked a few years ago & didn't really get the answers: Down nozzles: Do they carry pure fuel, or fuel air mix? If its pure fuel, doesn't that alter fuel/air mix? Do they compensate by running the injectors leaner?
A engine can have up or down nozzles or both. Until the fuel reaches the nozzle it's 100% fuel. The nozzles are vented which allows the fuel to draw in air.
Originally Posted by Tony74:
Nozzles lines up or down are just fuel, the nozzles has an air gap to prevent sfioning, that is were fuel atomization occurs.
Thanks Tony.... I won't even make fun of your spelling