Why did the 1.8 engines have L-jet? |
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Why did the 1.8 engines have L-jet? |
VaccaRabite |
May 31 2024, 08:05 AM
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#1
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En Garde! Group: Admin Posts: 13,571 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Has there ever been a reason Porsche/VW speced L-jet injection for the 1.8 engines instead of D-jet like the 1.7 and 2.0 engines used?
Usually when manufactures do this there are financial reasons for the change. Either they have the same engine on other vehicles they produce, or its just cheaper to use whatever part is being used. But Porsche didn't use the T4 motor on other cars at the time. And if it was cheaper, they would have done away with Djet on the 1.7 and 2.0. I don't think VW was using l-let at the time for the bus... but maybe? There has to be a reason that Porsche wanted Ljet on the 1.8. Zach |
technicalninja |
Jun 2 2024, 07:06 AM
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Senior Member Group: Members Posts: 1,948 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region |
@wonkipop
Thank you for all of your knowledge! The early history of German fuel injection is very interesting. Even more so that Bosch bought Bendix patents. I thought Bosch was OG on all of their stuff. World-wide to me means more than Europe. Seeing D-Jet across Europe doesn't surprise me at all. I "lump" Australia in with Europe due to the "English" component. This is probably unfair as the USA had that same component (till we chucked them out!). I see L-Jet as the ancestor of all modern port injection. What would be VERY interesting is the "number of units made" of each style. I'm not sure of the "death date" of L-jet. I see Motronic as a modern digital version of L-jet. I am probably wrong. I, also, cannot pinpoint an American car that used the first version of L-Jet so even L-jet is not "World Wide" using my designators (actually manufactured on all continents). By the time L-Jet added computer control of the ignition, MAP and MAF sensors, potentiometer on the throttle, and O2 sensors it went mainstream on American stuff as well. I don't know if it was still considered L-Jet at that time. I cannot remember a single American car with an AFM... Maybe there is one! Now, impress me! I'd love to know all about the earlier stuff... I'm speaking of the mechanical injection on the 300SL Gullwings/roadsters Was that the same (I believe Bendix) as the early FI in American stuff (57 FI Corvette)? I don't think it is. I think the early Mercedes stuff is more like diesel injection (or Spica) but have never heard a good explanation. The above might be better in another thread. Sorry if I've ruffled feathers... Didn't mean to. What was the first FI actually made in Australia? The first American stuff has the word "Bosch" imprinted on most of the components... |
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