Our purpose is to support owners in their use and maintenance of the Porsche 928 and to foster camaraderie among owners throughout the world.
Welcome, Guest
Username: Password: Remember me

TOPIC: Complete L-jet fuel system and ignition system off a 4.7L

Complete L-jet fuel system and ignition system off a 4.7L 18 Mar 2019 17:02 #20757


  • Posts:2
  • dcolpitts's Avatar
  • dcolpitts
  • New Forum Member
  • OFFLINE
  • Karma: 0
Have a complete L-jet intake system from air box to intake runners along with wiring harness also Distributor and ezk box. I'd like to sell complete if possible, like to see it go to a member Contact This email address is being protected from spambots. You need JavaScript enabled to view it. or leave message (512)845-4837 I'm located in the Austin, Tx area. Thanks
The administrator has disabled public write access.

Complete L-jet fuel system and ignition system off a 4.7L 19 Mar 2019 02:05 #20759


  • Posts:202 Thank you received: 12
  • Rich928's Avatar
  • Rich928
  • Moderator
  • OFFLINE
  • Karma: 3
Please be more concise regarding your post. What year 928 is the system removed from?

The L-Jetronic fuel injection system isn't mated with an EZF spark box, it is used in the 1980 - 1984 US-spec Porsche 928s and uses the same ignition system as the earlier 1978 - 1979 928s.

If an EZF spark controller is used, the system is a 5.0 Liter 1985 - 1986 32 valve engine that uses the LH-Jetronic fuel injection system. The Euro/ROW 928 models used a slightly different LH/EZF system from 1984 - 1986, that system had no O2 sensor or catalytic convirter, no idle speed regulation and no lambda control.
Rich
Membership Chairman
Charter Member
1993 928 GTS Cover Girl
1987 928 S4
1979 928 5-speed rescue
1979 928 5-liter track beast
The administrator has disabled public write access.

Complete L-jet fuel system and ignition system off a 4.7L 19 Mar 2019 09:25 #20761


  • Posts:202 Thank you received: 12
  • Rich928's Avatar
  • Rich928
  • Moderator
  • OFFLINE
  • Karma: 3
The L-Jet systems have a spark box labeled "TZC" or Transistor Ignition Unit. This is an analog box that just amplifies the ignition pulse from the Hall Effect sensor in the base of the distributor.
Rich
Membership Chairman
Charter Member
1993 928 GTS Cover Girl
1987 928 S4
1979 928 5-speed rescue
1979 928 5-liter track beast
The administrator has disabled public write access.

Complete L-jet fuel system and ignition system off a 4.7L 19 Mar 2019 18:23 #20763


  • Posts:2
  • dcolpitts's Avatar
  • dcolpitts
  • New Forum Member
  • OFFLINE
  • Karma: 0
Thanks for the correction, these parts came out of a 81 titled car, but when I started working on it found the engine was a M28.19 engine. Have converted to modern ecu and the ford edis ignition system. You are correct on the the ignition and distributor my bad.
The administrator has disabled public write access.
Moderators: Rich928, mm928, billvvOC
Time to create page: 0.409 seconds