FI retrofit, it's done!!! Options

[toon1]

I've been working on retrofitting newer fuel injectors for the 914. My goal was to find an injector that can utilize as many of the stock parts as possible.

I came up with a inj. off a 96 forn escort 1.8l motor.

One comment is needed, this will only work with an aftermarket FI system s these inj. are HIGH inpedence.

This setup gives the ability to use higher fuel pressure, 44psi . It has a lower flow rate than the stock inj.. so the pulse widths will be longer and should give a little better idle quality.

these are disc style rather than pintle( stock). fuel atomization will be much better giving a cleaner, more efficiant burn.

The length of the inj. where shorter than stock so I added an O ring to make up the difference.

The plastic tips are different ,I cut them off and put the tip of the stock inj. on the new inj., fit perfect. now the stock tip O ring can be used.

the fuel rail was machined to tolerance for the top O ring seal. And I made a bracket to support the fuel rail from vibration and also keeping it from popping off the top of the inj.

Here's the setup assembled. enjoy

[JeffBowlsby]

I thought Dave Hunts problems mostly related to MS inability to properly deal with fuel metering during deceleration?

Unfortunately, stock 914 FI harnesses are not capable of being used for these PEFI systems even with significant modifications. The circuitry requirements are completely different.

I completely concur with most of Jakes points, SDS is a great solution for most 914 owners and I would choose it over MS anyday. But please, keep it simple...most 914 owners just need a simple D-jet/L-jet replacement, which does not require ignition control. Fuel-only is sufficient, the more complex, the more that can break. Only get ingition control if it is a necessity.

SDS is to be commended for providing a basic harness, but their harness is not a very good solution for the 914s engine bay layout or for long-term serviceability. Plan to spend a significant amount of time/budget on the harness design and fabrication if you want a durable and reliable installation. Think about an optimum 914 engine bay layout, EMI-issues/grounding/shielding, durable connections, and protecting the wires and connections form heat and contamination.