- Joined
- Mar 8, 2015
- Messages
- 311
Several months ago I talked my brother ( racer57) into a building a hit miss engine based on David Kerzel's design. I must say it was a rather ambitious project for someone who was a relative newbie to machining. Nonetheless he completed it but couldn't get it to run. I brought it home to my shop about a month ago. After about 40 hours of work, I finally achieved success today. Let's see... I remade the carb, made a new piston and rebored the cylinder, made a new rod bearing, and made a new cam shaft. We also had problems with the ignition module. After all this, I could get it to run, but not reliably. And it was hard to start.
Finally I decided to remake the valves. My brother cut the seats with 60 degree countersink and made the valves to match. I remade the valves and seats cut to 45 degrees. Turned out that made a huge difference. Engine runs great now.
My brother tells me I'm the engine's adopted father.
Check out the video
Finally I decided to remake the valves. My brother cut the seats with 60 degree countersink and made the valves to match. I remade the valves and seats cut to 45 degrees. Turned out that made a huge difference. Engine runs great now.
My brother tells me I'm the engine's adopted father.
Check out the video
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