Henry went to the rubber ball because of cost. Fewer parts, simpler design.
Both work well but the rubber ball may need to be replaced every so often.
Chris W.
Having assembled 25 Burtz engines early on, I machined the "O" ring groves myself before Terry was offering bolts with the groves. I always machined the groves with radiused bottoms. The square groves are definitely a stress riser.
Chris W.
Is Rootleib still making hoods? I want to purchase a hood and they do not answer their phone of their emails.
Does anyone know if they are still making hoods?
Thanks,
Chris W.
I also have a a Model A with a 5.5 head and one with a 6.0 head. Have been running them for more than 15 years using 87 octane fuel with no problems. I also have a Bertz engine with one of Terry's early version of his 6.5 head that I have to run premium fuel. I think the later version of the...
I would definitely check the flatness of the head and block. Use the 509G gasket if things are flat. Be sure to use Copper Coat on both sides of the gasket and install while the Copper Coat is wet. Be sure the surfaces are absolutely clean and free of any grease or oil. Use acetone of lacquer...
I agree. Looks like a nice engine. Replace the rod. Get it balanced and you will have a good engine. Trying to do something with rethreading is not a good idea.
My opinion after working on these engines for more than 70 years.
Chris W.
That is fine for a late model F150 but the question was oil for a Model A Ford.
Late model lubrication requirements are different than cars that were built almost 100 years ago.
Chris W.