How was this engine manufactured?

[Alphawolf45]

I am working on an early 1950s 5hp Firestone outboard. I wonder can the iron cylinder be pressed out of the aluminum block..Anybody know if the cylinders were pressed in at the factory or cast in place at the foundry?..
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I suspect it may be too much to expect anybody here to have intimate knowledge concerning the manufacture of this particular engine...But if you know how any of the small old engines were built I'd like to hear what you know...
Thanks
Steven

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[ACarbone624]

BassBoy might know...he is our outboard guru

 

[ben2go]

I thought those were aluminum cylinders with water jackets cast around them.That's how my older motors are.