various Injectors
Post Fiend
Joined: Nov 2004
Posts: 5,638
Likes: 1
From: Manitoba
There are three different injectors used in 6.9 & 7.3L engines - one for the 1984-1992 6.9's & 7.3's, one for the 1992 1/2 - 1994 engines that Navisatar referred to as the "P&E" (performance & emissions) engines and one for the 1994 turbocharged engines. The three were D-E-G injector codes in that order.
In reviewing the drawings I see that in addition to to different nozzle opening pressure for the injectors, there are a number of differences between the nozzles including:
different pintle diameters, pintle bore clearance, valve overlap length,valve extension etc. all which result in different valve lift vs flow characteristics and therefore result in the different injectors for the different engine applications."
All the operating pressure ranges are different, the pressures match with the respective IPs which are all different. The 92.5 and beyond attain the power at less rpm.
In reviewing the drawings I see that in addition to to different nozzle opening pressure for the injectors, there are a number of differences between the nozzles including:
different pintle diameters, pintle bore clearance, valve overlap length,valve extension etc. all which result in different valve lift vs flow characteristics and therefore result in the different injectors for the different engine applications."
All the operating pressure ranges are different, the pressures match with the respective IPs which are all different. The 92.5 and beyond attain the power at less rpm.
