Shipbucket

Does anyone know what happened to the 8 inch
gun turrets that were removed from the USS
Lexington and the USS Saratoga? The guns
do not look like the same caliber as those on
USN heavy cruisers.

They were the same guns used on earlier heavy cruisers of the USN, for example the Pensacola class.
According to Navweaps, the guns were dismounted and integrated into coastal artillery instead:
http://www.navweaps.com/Weapons/WNUS_8-55_mk9.htm

The mounts on the Pensacola class were different (I think), but they had the same guns. The guns themselves were used in a shore defense battery on O'ahu.

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𝐌𝐀𝐓𝐇𝐍𝐄𝐓- 𝑻𝒐 𝑪𝒐𝒈𝒊𝒕𝒂𝒕𝒆 𝒂𝒏𝒅 𝒕𝒐 𝑺𝒐𝒍𝒗𝒆

Weren`t the twins on the Pensacola class the same as the ones on the Lexington class?

If I remember correctly the were installed as coast defends batteries on Oahu

The gun its self was the same type used for the treaty heavy cruisers, but the mount was different. preliminary designs in the Pensacola design process used the same mount, but not the final design. The gun mounts were scrapped and the guns used for shore installations on Oahu.

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"All men dream, but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find that it was vanity, but the dreamers of the day are dangerous men, for they may act their dreams with open eyes, to make it possible. This I did." Thomas Edward Lawrence, The Seven Pillars of Wisdom

Hopefully, by now OP gets the point

Signal,

Here's a link to a good article from the "Coast Defense Journal" on the gun mounts and their reuse as coast artillery. http://www.eugeneleeslover.com/ENGINEER ... turret.pdf

It seems from this article that the guns, mount, gun house, and all were installed complete on their new foundations.