I swung by Summit Racing on my way home yesterday and got some goodies.
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Marn, on Flickr
-MSD Street Fire ignition control. pulled it all out got al lthe wiring labeled as per the MSD diagrams for timing control.
-MSD Streetfire TFI style coil rather than a canister one. These last a bit longer, less affected by heat, etc, if im not mistaken? I dont really know what im doing here.
- TFI coil pigtail. After testing, will clip off the ends of the plain wires from the street fire and install the proper pigtail.
- MSD to duraspark connector. This will be a plug and play connection to the modded factory duraspark dizzy, from the EFI throttle body wiring harness.
So, here's the duraspark with the vac and mechanical advance removed, and the reluctor phased approximately 15 degrees advanced (rather than using an MSD distributor with an adjustable rotor, which you would phase 15* retarded). MSD tells you to then install the dizzy, lock out the timing control in the computer, time the dizzy to 15* BTDC with your timing light, then lock it all down, and re-enable the timing control.
Here's where I get confused, and the conclusion I have come to
If I'm not mistaken, by either retarding the rotor, or advancing the reluctor/trigger, we have essentially LOCKED the distributor into 15* advance, when the body of the distributor is in the exact same position it would be when set to 0* advanced. So when i hit it with a timing light and it tells me its 15* advanced, the body of the distributor is actually in the position it would be for zero advance.... by adjusting the guts of the dizzy to fire 15* before the rotor hits the contact, the engine will be timed 15* advanced, when physically the number 1 terminal is in the 0* advanced position (as in, that is where the terminal would be located if you wanted the dizzy to fire at exactly top dead center).
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Marn, on Flickr
Well it ain't just the smoke and the traffic jam that makes me the bitter fool I am But this four-wheel buggy is A-dollaring me to death.
For gas and oils and fluids and grease, And wires and tires and anti freeze....And them accessories, Well honey, that's something else.