Just a few random things today in between house chores. I sorted out which spark plug wires go where based on the lengths and started figuring out the routing to the PMags. I'm going to leave the top plugs out of the cylinders until it's time to run the engine. That will let me keep the dessicant plugs in place as long as possible.
I drilled the plug wire holes in the left side back baffle (I had drilled the right side a while ago). Something so simple turned out to be rather difficult just due to access. I definitely should have drilled the holes before I put the baffle in place.
The cylinder 3 and 4 baffles have holes for spark plug access in them for other engine configurations. Since I don't need the holes, they have to be plugged up. Van's supplies a few screws and tinnerman washers. This closes up the holes, but I'll still put some sealant on them I think.
The right side uses much thinner angle on the outside (I modified the left side to beef up the oil cooler corner), so the nut bottoms out on the shank of the screw. I grabbed some 1/8" aluminum scrap and made a disc for the inside washer to nest in. That was enough to allow everything to snug up nicely. A little goofy to do, but it's faster than ordering new hardware.
A major benefit of using PMags is the fact that they can use standard automotive spark plugs - much, much cheaper than aviation plugs. They are a different diameter than aviation plugs, so use an adapter. The adapter is threaded onto the spark plug first (finger tight only), then the combo is threaded into the engine. The spark plug is then torqued down to 18 ft/lbs.
