I drove it to Crown Hill and back last week before our meeting and I noticed the MSD was a little warm, nothing alarming. I am going to get a 12v whisper fan from DigiKey and create a small air flow through the box to keep it cool.
I have been also playing with the timing after talking to Pat at the last meeting. The issue I am having is the vacuum advance is causing some back fires which tells me it is advancing too far on acceleration. I observed the vacuum advance lever with it connected and noticed it pulled the most on the initial throttle then varied as I applied more throttle. I have been leaving it off for now but under heavy acceleration (hills) there is some knocking and lack of HP of course.
I pulled the duraspark apart tonight to adjust the mechanical advance and noticed I had it set on 24 instead of 16 (plus the 10 degrees at idle). Murphy's law set in and one of the advance springs (the lighter one) took flight somewhere so I am going to get the Mr. Gasket 925D kit as recommended by http://classicinlines.com/DSII_swap2.asp. I also understand now how to limit the advance by adding some weld to the mechanical plate to close the gap. I am going to start with the 16 and see how it goes from there. There are also many adjustments on the Holley I need to play with.
It seems like it could take me a month or more to really tune this engine in to the "sweet spot". Overall it has been firing right up and burns real clean, the electric choke is working well and the MSD 6AL with the Blaster 2 coil is real smooth. More to come, I'll take a video of my first wheel stand
Brian
'67 Falcon Bus/240/C4/Offy DP/MSD Duraspark II/Holley 4160
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