Bosch L-Jet BMW M10

[microsa]

I have an 84 BMW 318i (M10) that has the Bosch L-Jet that I want to convert to M/S but which one? This car will stay normally aspirated for now but might be moved to a turbo in the future. Anyone have any experience with converting this engine to M/S? I found one article where an M10 2002 was converted from carbs to M/S, but since my car was originally FI equipped, a lot of the steps in that conversion are not necessary on my car and I was hoping to be able to use as much of the stock harness as I can.

Anyone done this?

TIA

Mike Allen
San Antonio, TX

[FixItAgainTony]

Lots of people have converted L-Jet over to MS. Any of the boards will do, but I would recommend the V3 board, which has the built in flyback circuit, which is needed for the low impedance injectors used on the LJet. You'll also need a circuit to handle the Fuel pump if you keep the original relays. Peter Florance had some schematics out there that I can't seem to find right now.

This post may help:
viewtopic.php?f=38&t=26674

Here is a good schematic of the LJet. All of the LJets are pretty much the same.

http://www.firstfives.org/faq/ljet/528i ... ematic.PDF

Charles.

[microsa]

Thanks for the info.....lots of reading for this old guy. Webers have always been my deal, but as one of my friend said "Mike, leap into the 80s at least" so here I go. I guess my largest reason for looking into this right now is to get rid of that AFM and I hope to be able to use as much of the original wiring as possible. As far as I can tell this L-Jet application doesn't control the ICV and has limited influence on the ignition. Eventually a turbo may be in the works as I have one from a Volvo 850 that was recently re-built that would be about the right size for the car.

[jol]

I had a k-jetronic m10 I 'squirted. Bought a L-jet manifold and from there it was just plugging in and driving. Welded the distributor stiff and used it as spark input (extra code).

[jol]

And here's where I put the welds in the distributor,
for rpm:

revolutions.jpg

and vacuum advance:

vacuum.jpg

[microsa]

Thanks Jol, that's exactly what I needed to see.
Mike