Its been awhile since I contributed to this thread and want to show my twist on the TFI relocation kit that the McCully kit doesnt touch upon and feel that it should of..
When I studied the way they designed the setup I see the most weakest areas are :
1. A lack of shielding which is very very important.
2. Has a pretty long drawn out way to get the job done.
When I made my TFI module relocation kit I actually went a slightly simpler route although similar....
1. I took apart an old TFI module and cut off the 6 pin connector and drilled a couple holes to feed the 3 wires through to solder the wires to.
2. The wires were pre-shielded but I wrapped them with copper wire to give it extra shielding and make ground-able with a grounding terminal
3. After that I gave it super -shielding by wrapping it all in copper tape.
4. Then I covered it in EMI resistant shrink tubing and filled the TFI module body with 2 Part Epoxy..This thing is protected against a mega EMP blast......
5. I went low budget and used all of the stuff i had readily on hand and so the faulty distributor I had was put to good use by becoming my heat sink aswell as a good way to mount the 3 pins on the TFI module by using a terminal block from a non functioning Halls Effect Sensor..
6. This thing is a lil more simplified and ultra protected against noise and false triggering........
7. In keeping with the ultra low budget and use what i had on hand part of the project I topped off the distributor body top with some foil tape and a heat sink from an old PC...........
I have mine installed on my F250 with A9L ECU swap on a 351w engine. I also have MSD 6 box and MSD TFI coil and a Moates QH.
Luckily for me I didnt have to cut and modify the TFI part of the harness.
One of the things I had to do afterwards was remove the distributor pull the shaft out and shim the distributor to have .005" of play as the total extra movement before shimming was .038"..The range is .005" to .015" and while I was doing that I also installed a brand new halls effect sensor.
The determining factor of it all was the quality of the graphs in my logfiles which showed how much noise that hinders performance was eliminated.
The orange tracer is the spark...Notice how much advance and retard was recorded due to the amount ot extra lateral movement in the shaft which transfers to erratic spark at idle.............
You can see how much taking the time to properly shim the distributor has on how smoothly it functions and stays almost in a perfect tracking...
