Saturday, November 26, 2016

Make that Engine Roar

November 26, 2016

Now that we have the fuel tank modified, we can use the donor car ( 1997 Lincoln Mark VIII) fuel pump. Our strategy is to wire the engine back up again and get it to run. In the process of fitting the engine in the frame, we needed to take off the intake manifold, generator, aircon compressor, starter, and the fuel and electrical lines. Here are some photos of putting that all back together a job completed by David and Jacob.





While we had the engine out we did the best we could to clean up this 20-year-old engine. While it looks a lot better, once we have it in the car it will still be 20 years old and will look dingy. We continue to think about it, but since it's an all aluminum block we don't want to paint or powdercoat it. 






When we first turned the key we had no crank at all, over the last week we debugged the wiring and found a few broken wires and unconnected wires, some additional grounding points were needed and after a few days and 10's of hours we got the engine reliably starting. 


Although at times this was frustrating, it solidified our thinking that we need to eliminate the car systems (lights, heater air con, wipers, radio, gauges) from the engine system (ignition, starter, engine controls, transmission controls, fuel delivery system and PCM (powertrain computer). 

So we are now looking at every connector, and every wire to see if we need it. For example, there is an electronic control box called the SCIL (steering column, ignition, and lighting) it has four connectors with over 70 wires entering it. Upon examination only 3 wires are needed to run the engine system. We are looking if we can direct connect these three wire to the PCM and eliminate the SCIL box and over 60 wires, it may be needed for the PATS system (anti theft key). Our next job is to look at every connector, electronic control box, fuse and relay to see what else we can eliminate. The desire here is that it will make the final wire looms less complex, and we will know every wire which will make it easier to debug if we have a problem down the road. We think this is a must as we are putting 20-year-old technology in a newly built car. Most people who do this, put a brand new engine and custom wiring kit into an old body and frame. We are doing the opposite since this 20-year-old engine is one of the first 32V DOHC 300HP motors, and doing it is quite a challenge. We are also starting to think about how we get the wiring to fit the car. It's like tailoring a suit you got from your taller, heavier cousin. For example, on the donor car, the battery is in the front and in the new configuration it's in the back.  Just one more challenge to keep us on our toes.


Tuesday, November 15, 2016

Back at it

November 15, 2016

Just back from a trip to California for Rachel's (my brothers step daughter) wedding in Piedmont.  It was Larry and the boys first time to Northern California so we made a trip to Silicon Valley and toured the high-tech scene.
Larry, Jacob, David, and Isaac in front of Apple HQ

The fuel tank is back from being pressure tested so we are good to get the engine running on the ground again to make sure all the wiring we did is still functional.

For the fuel tank, we needed to modify it so it could accept the in-tank fuel pump from our donor car. The fuel system does a few things that make using the fuel pump a necessity if we want to use the vehicle computer as is. The anti-theft system shuts off the fuel pump through a fuel pump computer, and it also changes the pump pressure/fuel flow during various stages of fuel consumption like starting, idling, acceleration and coordinating with the EGR (exhaust gas recirculation) fuel to make sure the engine does not run too rich in fuel.

To mount the fuel pump we needed to enlarge the fuel pump hole to accept the donor car set up.

the new whole is much larger than the old one
what we cut out
Jake working on the tank
before the fuel pump installed
after pump installed
Tomorrow we are going to start on getting the engine running before we lower it back on the frame for hopefully the final time.