Hmmm how did they do that?
I have a A2B on my -4 that did not come, per the parts manual, with hold down plates. Because of that, I was leary to put higher compression piston in it. I was told that I could go with longer studs and add the hold down plates.
It is interesting to note that there are A2B narrow decks and A2B wide decks. I have done two annuals this past year on A2B wide decks. One was on a Super Cub and one was on a Citabria. The Cub engine was a factory reman from Lycoming. Both 150 HP.
I have not researched to find out if Lycoming made a A2B wide deck in later years or if they had been converted.
Any thoughts???
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