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 |
wonkipop |
Jun 3 2024, 04:31 AM
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#2
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Advanced Member Group: Members Posts: 4,658 Joined: 6-May 20 From: north antarctica Member No.: 24,231 Region Association: NineFourteenerVille |
@technicalninja
and anyone else vaguely interested. the original SAE paper written by the development engineers at Bendix behind the system. paper dates from the late 1950s. for those of you with D jet you will recognise all the components. including the operation of the lower half of the ignition distributor. some of you probably already have this paper. i would imagine mr b. ( @JeffBowlsby )has it stashed away in his files. i found it in an obscure section of junk i had filed away on origins of L jet. (IMG:style_emoticons/default/biggrin.gif) (IMG:style_emoticons/default/beerchug.gif) never been able to find any contemporary papers or such on L jet dating from the time of its development. i guess it was all ho hum by that point in time and no big deal? all part of the general horror of emission controls negativity. in the main bendix got done in by external electronic interference of the electronic control unit. vulnerable to electric fields etc. at least understand that appeared to be what caused huge problems and was not detected during factory testing. or as some stories go bendix did not get done in but chrysler perhaps failed to execute to the necessary high standards for components. (bean counters at work?) bosch cracked it. made a better shielded control unit. took them a lot of hard work though. i believe bendix made money out of every bosch unit sold. good way to make coin. like printing money? (IMG:style_emoticons/default/biggrin.gif) |
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