I spent a little time on the Mustang each night after work but much less than in previous weeks. After little success with the idle mixture screws on Monday, I decided to tackle some small projects and return to carburator adjustments later.
On Tuesday, I fixed the wiring for the electric fan. I had it wired constant to the adjustable temperature controller for engine break-in. Today, I wired in a relay and have it running off an ignition wire which is connected to my new fuse block.
On Wednesday, I swapped out my spark plug wires for the MSD StreetFire ones I used previously. I did not thik they would work as I needed 45 degree boots. However, while searching for new ones, I found these can be bent at the boot and effectively become 45 degree boots. I fixed the one which was melted on the header and the reinstalled them.
On Thursday, I cleaned up the inside of the Mustang a little and wiped off the outside. I installed the windlace on the inside of the car which was the final interior piece I needed to install.
Last night, I worked on setting the idle mixture but did not have much luck. The vacuum is at 14 with the idle at 900 RPM. From what I read, this is about normal for my cam but probably just a little low (15 would be good). It is likely a little low due to the timing and fuel mixture not being correct. After setting it at 1.5 turns out and driving around the block a little, I pulled a plug and found the following... looks a little rich.
Since the engine was still warm, I decided to go ahead and change the oil. I swapped out the Comp Cams 10w30 break-in oil with Brad Penn 10w30 oil. This oil has all the additives needed for running flat tappett cams which is missing from most off the shelf types of oil. I purchased it from Summit and installed a new Wix 51515 filter to go along with it. I'll cut up the old oil filter in the future to see what is in the filter from the break-in process.
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