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what is the kit going to cost? a grand?

L-jet is not difficult to troubleshoot...I bet you yourself with the help of this BB could get that running for a fraction of the cost of a carb conversion.

as for the last mechanic who charged you 800$ and gave it back running rough, I wouldn't have accepted that lousy service. Was he an alfa mechanic?

Great looking spider graduate btw, looks in really nice condition:)
Disagree, My experience was the Bosch L jet was quite difficult to trouble shoot. I chucked the entire electronic fuel and spark systems and found a used Weber setup. I added an electric fuel pump/pressure regulator and some other bits. Would make the conversion to Webers again in a second.

BTW, great looking spider
 

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I've successfully converted my '86 EFI spider to running on a set of cable-operated Yamaha R1 carburetors. So yes, with the right set of tools and a complete kit, a Weber conversion is actually pretty easy.
 

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Barely mentioned here, the Head and Intake Manifolds are different on "Bosch" Motors, so look for a "Bosch Specific", Carburetor Manifold, (The rest is easy). There was one on Ebay months ago, I posted here but no one was interested. I have a "Rebuilt" Pair of Dellorto Carbs, off of a 2.0ltr Alfa FS, $550. when your ready.
BTW: I have worked on several "Bosch" Spiders, and consider them to be Total Pains in the ***. Doing a Head Gasket on one is a Terrible Job, taking Days instead of Hrs. I steer way clear of them. (Sorry for the blunt truth), but after doing two, Head Jobs in a row, Forget-it. Bob Lesher in Astoria
 

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Another option to backdating to carbs is updating to more modern fuel injection. If you are DIY handy, the megasquirt system gives you a fully programmable (and troubleshoot-able) EFI system. Cost would be similar to a Weber conversion, but give you a fully modern and easily updateable system.
 

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what is the kit going to cost? a grand?

L-jet is not difficult to troubleshoot...I bet you yourself with the help of this BB could get that running for a fraction of the cost of a carb conversion.

as for the last mechanic who charged you 800$ and gave it back running rough, I wouldn't have accepted that lousy service. Was he an alfa mechanic?

Great looking spider graduate btw, looks in really nice condition<img src="http://www.alfabb.com/bb/forums/images/smilies/smile.gif" border="0" alt="" title="Smilie" class="inlineimg" />
I agree. The system is simple and effective. It is sensitive to vacuum leaks but tracing them down is methodical and usually cheap and easy fixes. I know it has been said 100's of times but get the L-jet troubleshooting page and go through it step by step, skipping nothing. You will find your issue. I have had many vehicles with dual carbs and I love the performance you can tweek out of them they can be persnickety too. Linkage adjustments, syncing, jetting, etc.... do what you like but dont write off the L-Jet system cuz it is difficult or complicated, its not!
 

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One problem with L-Jet is how do you test a suspect computer, AFM etc? I spent many hours helping a young guy try to get his S3 Spider going and we were unsuccessful. L-Jet is obsolete and supporting it will become more difficult as time passes.
 

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I had an issue replacing the intake manifold for carbs on a 1986

I am a diy guy and the eBay user alfa1750 has a kit with a pair of webers, intake manifold, linkages, rubber supports, carburetor support rod, and velocity stacks. Will the distributor need to be replaced or does this kit look complete? In NC, the car is a classic and doesn't need to pass emissions or be inspected any longer. Do you have any pictures? I would like to see what it looks like under the hood converted.
I had an issue replacing the intake manifold for carbs on a 1986...a small piece must be grounded down?
 

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well, there are tests you can do on an AFM....on my motronic afm (I know more about motronic) there are quite a few ohms, volts tests one can do before condemming it.
and you can have an ECU checked for what, 50$ or so?

I just have a spare AFM and a spare ECU (that I have loaned out to various guys, and so far neither was the cause of the no start in any of the cases...it was always something more simple that they had overlooked)

Don't get me wrong, carbs are nice (had them as well on my alfas) but because you cant get an L-jet working you don't really have to throw it all out in the trash and convert to carbs for a grand....my opinion:)

The OP has 3 posts in 4 years, so I doubt he has even asked the help of us BBers.
 

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Guys who drive Spiders with Webers are driving sports cars. Spiders with L-Jet are boulevard cruisers.
Go for the conversion and ignore the naysayers.
 

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I am about to leave for Road Atlanta where I will be crewing for a couple of Alfa Spiders with Webers. I can guarantee that I won't see a Spider being raced with L-Jet. Webers are part of the Heritage.
 

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Quick question: I'm converted and running on carbs (although not what you would expect, as already mentioned) but I still have both the fuel and ignition ECUs plugged in. I am running with vacuum advance disconnected, although a new distributor is on the way.

Before I start tearing through wiring diagrams, does anyone know which pieces of electronic wizardry I can simply unplug and remove from the car? I assume I can't just dump the Ignition and Fuel ECUs and I'll have to jump some connections or add relays. I can try to run the car with them disconnected, but felt like making a post first was worth a shot.

Thanks in advance.
 

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An 86 with Webers will NOT pass any smog or CO2 tests in anystate that knows it's stuff (or has working machines). Here in Lake Tahoe, we don't have to smog cars..so it has been done by a few folks I know. It will work, BUT you need a really good Italian mechanic who knows his stuff. The cost was around 1500 - 2000. Would I do it Hell No..cost is more that it is worth.
in Texas , no smog reqm`t after deemed "classic" or Antique...= 25 yrs old and older
 

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If you live in a state with smog problems like CA then you have to comply with emissions regulations. If you live in a state with clean air like SC then there are no emissions regulations.
 

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Just curious, are there smog laws for classic/vintage cars in CA? They have a pretty rich classic car culture.
There are, but I believe the cutoff is pre 1974 for smog exemption, whereas most other places just have a 25 year rule. So an '86 spider has to pass smog in CA, but not in most states.
 
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