1935 Miller-Ford Indy 500 Race Car

I finally got rested up enough from my vacation to go out and get something done on the kart. Today I opened up the motor and got rid of all the governor guts, and the low oil float. I then tapped the holes left in the engine case and screwed in some plugs. I also put the jet kit in the carb and the offset key in flywheel.
When I removed the side cover of the engine case, the cam stuck in it and I inadvertently pulled it out. I saw the thing on the back side of the cam gear and thought "what the heck is that for?" I didn't think much more about it until I was reassembling it and I was checking the valves to make sure I had the push rods installed right and they were moving properly. I was turning the crank by hand and I noticed the exhaust valve opened a little when the piston starts on it's compression stroke. Then I realized what the thing on the back of the cam gear is for. It opens the exhaust valve at the start of the compression stroke to relieve some compression pressure to make it easier to start. Then when it get spinning, the weight swings out and the valve operates normally.
I always wondered why it was so easy to pull the rope on this motor compared to the Tecumseh 6 HP in the Model T. That thing will rip the starter handle out of your hand if you're not careful.
So when that was finished I bolted the motor in and ran some wires to the dash for the kill switch. I found this nifty little rotary switch on ebay. It's actually for an electric guitar, but I think it looks right on the dash.
BTW, the motor started on the second pull. Sounds great too.