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Posted by: rezron Oct 7 2004, 04:41 PM

I noticed that Sir Andy had his 1.8 with a d-jet in the ads.
Is there an advantage over running with the stock L-jet
in a '74? I did'nt see anything on this topic in "search".

Thanks,
rezron

Posted by: SirAndy Oct 7 2004, 04:44 PM

better availability for parts ...
easier to diagnose, not quite as sensitive to vacuum leaks as the l-jet ...

Andy

Posted by: type47 Oct 7 2004, 05:18 PM

on the otherhand, even the factory workshop manual describes L-jet as the "more modern FI system". parts are available since everyone has a hard time diagnosing L-jet and are switching to carbs . if vacuum leaks are a problem, just fit new hoses! ever try to find a new D-jet Aux Air Regulator? how about the price of a new or rebuilt MPS? L-jet was used on VW buses, even as late as '83 air cooled ones (vanagon). i like the guy who has a 2.0L fitted with L-jet.

Posted by: SirAndy Oct 7 2004, 05:25 PM

i dunno. i have seen D-Jet parts and complete sets by the hundreds, but i have only seen 3 or 4 L-Jet systems (and they were all on running cars) ...

the production numbers speak against the l-jet ...
Andy

Posted by: Mueller Oct 7 2004, 05:52 PM

I've done the reverse, i installed an L-let from my old 1.8 onto a slightly higher compression 2.0, ran great with 0 problems (and then I took the car apart and it's never been the same, LOL)

Only the 1.8 914s had the L-jet which would explain the rarity of them....Porsche used the L-jet again on the '76 912E which had a 2.0 /4 motor in it....and after that, variations of the L-jet have been put on thousands and thousands of cars...even my '91 911 has a tweaked/improved version of the original L-Jet

Posted by: jim912928 Oct 7 2004, 06:46 PM

I believe my 928 is running a version of l-jet. The l-jet in my 914 runs perfect, just keep those hoses in good condition!

Posted by: qa1142 Oct 7 2004, 08:27 PM

I have 1.8 with L-Jet, my Fox had L-Jet, my old van had L-jet it is no easier or harder to diagnose than any other EFI. Don't change unless you are going for high HP with carbs.

or you will feel like this

Posted by: BatAc Oct 7 2004, 10:32 PM

3 or 4 L-Jet systems (and they were all on running cars) ...

That's because they work fine. I have no problem (ooops, should I knock on wood for that one) with mine.