BigAl1

The recovery has begun! I drove it a little around the area for licensing paperwork to be completed, then put it up on blocks for a complete checkup. It needs enough work underneath (new brake pads, hoses, fuel lines, filter, belts, suspension bushings.....) to decide to not drive it anymore until these items are fixed, so probably off the road until next spring But, better safe than sorry.
When going through the engine bay, I'm getting a sense that the PO's didn't do much for required maintenance - the external belts look original, and there are hoses with cracks showing - I guess the normal stuff for a 30 year old car. Not being familiar at all with CIS, but comfortable with EFI, I'm planning to convert to MS3 for the tuning and modern benefits of computer control. So, I come to my question... Has anybody else used straight fuel rails with 1980 Euro S intake runners? It looks like 2 of the runners will be very tight against the fuel rail? The engine and engine bay is a grimy mess, so it will come out in the next couple weeks for a complete reseal and do the conversion on the stand, plus detail the surroundings properly.
TIA,
Allan

GlenL

What EFI injectors are you going to fit? And how?

danglerb

CI$ injectors and electronic have a different fitting size etc in the intake holes. I don't know which is bigger, or if bigger, bigger overall, but worst case I guess you could bore and thread the existing holes for some kind of adapters.

Ljet and LHjet have the same spacing, so I know its possible to adapt the LH straight rail for use with newer injectors on the Ljet, but no idea about compatibility with the CI$.

James Bailey

It is much simpler to get Euro LH 84-86 intake runners as well as the throttle body run a dummy mass air flow sensor and the stock aircleaner ...unless the fun is the task of conversion and fabricating plus a custom look.

jpitman2

Being a happy CIS camper for a while now, I would suggest that IF the injection is behaving now, leave it alone until you encounter an expensive problem with it. Do all the planning and assembling parts you will need so you are ready. One of the major downsides of CIS is that if its left unused too long you get crud deposits in the lines that can stop it working well, or at all.
Mine starts and drives from stone cold in winter here(~40F) with no driveability issues at all, as well as any modern EFI system, IMHO. Maybe not as economically as modern stuff, but if that was a consideration in having a 928, there is something wrong.
jp 83 Euro S AT 52k

BigAl1

I'm planning for Ford 26# injectors, and I'll fit these to the runners I have. Fabricating and machining is not a problem for me. I am doing this conversion to bring this area up to modern reliability, and don't want to rely on 30 year old systems that haven't been maintained properly. Plus, the cost vs benefit balance is definately on the EFI side for me - better power, economy, simpler, cheaper. Since I feel that the old systems are just barely running now (as shown by lack of maintenance done by PO's), and with the engine out, it will be the best time to do the conversion this winter.

Allan

GlenL

I just fitted new CIS injectors for $24 a hole. They are alternate Bosch units for MB cars, but they work great. Your "cuteness" is far off target. I've re-built my entire CIS system for less than $300.

The plugs that hold the CIS injectors are large enough to provide a mount for some "Ford" injectors. Use some heat to get it going and then unscrew them by turning the injector.

It you're handy in the machine shop then you can make this work. Tricky to cut the threads. Maybe weld in some bungs that accept the new injectors.

Sounds like a fun project.