Your question might be better put like this:maxxis_mudder said:If, infact the new 6.4 will be a common rail, what do you members see as the advantage to the HUEI system of the past?
What was happening in early systems on the Duramax was leaks developing in the return lines under the valve covers. The return lines are very low pressure. This would literally fill the crankcase with fuel, spewing fuel/oil mix out of the breather and all over the underside of the truck. GM redesigned the heads so all of these lines are external. Dodge uses integral galleys cast in the head for returning fuel to the tank.Duke said:Don't the older (or maybe the new) HPCR systems have the potential for a catastrophic loss of fuel under the hood?
In other words, one of the HP fuel lines could blow, spewing fuel everywhere?
If my DT466 loses a fuel line, it would be a real mess, maybe even a fire.
That's about the only disadvantage I can think of.
I'm all for CR. It'll be nice when (if) IH really does this for Ford's new diesel.
What is common rail?maxxis_mudder said:If, infact the new 6.4 will be a common rail, what do you members see as the advantage to the HEUI system of the past?
I have seen the result of an under hood fire from an external line leak at a truck yard I go to-not pretty. From what I heard, driver barely had time to get out of the cab.John_G said:What is common rail?
- HEUI but using FUEL (and piezo-electric injectors) instead of HP oil to allow ultra high injection pressures.
Adv: One pump (fuel), BOSCH designed system (none better), has been in use EXTENSIVELY in Europe and USA for many years, some mechanical parts commanility with other brands.
DisAdv: If it leaks, fuel in oil and engine destroyed quickly, external leaks possible and at very high pressures, elevated fuel temperatures.