The Pennsylvania Railroad K4 was a class of 425 4-6-2 steam locomotives built between 1914 and 1928 for the Pennsylvania Railroad (PRR), where they served as the primary mainline passenger steam locomotives on the entire PRR system until late 1957.

Pennsylvania Railroad 1361 is a K4 class 4-6-2 "Pacific" type steam locomotive built in May 1918 by the Pennsylvania Railroad's (PRR) Juniata Shops in Altoona, Pennsylvania. It hauled mainline passenger trains in Pennsylvania and commuter trains in the northern New Jersey Shore on the PRR until its retirement from revenue service in 1956.

From 1914 until 1956, the many passenger trains of the PRR were hauled by an iconic steam locomotive: the K4s Class engine—a masterwork of technology, engineering, and innovation. This class was the first scientifically designed engine, developed by …

Jan 17, 2025 · The firebox and boiler of PRR Class K4s 4-6-2 engine No. 1361 under restoration at Altoona, Pa., with the tender in the foreground. Fund-raising has tipped past the halfway point for the $2.4 million project.

Sep 2, 2021 · The recent announcement of a fresh start in the long effort to restore the Altoona Railroaders Memorial Museum’s class K4s steam locomotive No. 1361 is great news for Pennsylvania Railroad fans. More than any other locomotive, the K4 was the face of …

Jun 25, 2021 · ALTOONA, Pa. — Pennsylvania Railroad Class K4s 4-6-2 steam passenger locomotive No. 1361 will be restored to operating condition under a $2.6 million campaign announced Thursday by the Railroaders Memorial Museum and its partner, engineering consulting firm FMW Solutions LLC.

Aug 25, 2024 · Pennsy's K4s-class engines, with their powerful yet graceful design, symbolize the peak of steam locomotive development. By restoring PRR 1361, preservationists are ensuring future generations can experience, firsthand, the marvels of early 20th-century engineering.

The PRR K4s was the largest steam locomotives ever built by the Pennsylvania Railroad, and it is no surprise that they are still popular today with railfans all over North America. This blog post will discuss this Pennsylvania railroad icon’s history, which spans both World Wars I and II as well as peacetime between them.

The Pennsylvania Railroad K4 was a class of 425 4-6-2 steam locomotives built between 1914 and 1928 for the Pennsylvania Railroad (PRR), where they served as the primary mainline passenger steam locomotives on the entire PRR system until late 1957.

In September 2021, two major milestones were reached. First, the weld defects in the steam dome flush patch were repaired. Secondly, the firebox and rear flue sheet were removed, both of which had posed serious concerns. Upon initial inspection by FMW, the firebox failed to comply with the minimum factor of safety (FoS) rating of four.