- Feb 15, 2020
- Reaction score
Would be good to see some pictures of your engine.I used the Hemingway castings ( about 10 years ago so most likely different production run) and they were on the small side of things.
Engine runs OK, think I need to increase carburetor size, the one I have is RC modified for petrol.
I have one issue, psark plug size, I made the head for the 1/4 32 long reach plugs and they work OK, but the spark plug boots barely make it over the exhaust / intake casting piece, So I have a new head to machine and drill for 10-40 spark plugs, I think those will give you a better look and will give some room.
Have you thought of making spark plugs to fit rather than a new head?
One other question, in the build notes and plan Westbury states that the firing order is 1-2-4-3. Somebody has added in red text 1-3-4-2 !!, I assume Hemingway. I am slightly struggling to get my head round the valve events, always easier when you can see the valves moving. What order does yours fire in?