1965 Tech Info Manual (and maybe 1966 - but I don't have that copy) calls for 1-3/8" long valve stems (I assume this means from the steel rim surface to the tip of the brass(?) threads. The manual adds that the stem "protrudes from a hole in the hubcap (wheelcover ?).
But on several stock dated 15-1/2 JK rims I've accumulated from different sources, all measure 2" long, exactly. And when the wheelcover is installed, the brass threads protrude; the rubber stem is just below the surface of the cover stem hole. If the stem was 5/8" shorter, you'd have to remove the wheelcover to check pressure or add air.
What are the thoughts of others -- 1-3/8" or 2" on stock steel rims ? I can see calling for 1-3/8" on knock-off rims,though
P.S. Note the date and rim code on the lower left of the photo below [65 and 3 (March)], as well as one of the "nubs" on the rim of the '66 wheel (located in the pic of the link below on the rim opposite about half way down the stem)
But on several stock dated 15-1/2 JK rims I've accumulated from different sources, all measure 2" long, exactly. And when the wheelcover is installed, the brass threads protrude; the rubber stem is just below the surface of the cover stem hole. If the stem was 5/8" shorter, you'd have to remove the wheelcover to check pressure or add air.
What are the thoughts of others -- 1-3/8" or 2" on stock steel rims ? I can see calling for 1-3/8" on knock-off rims,though
P.S. Note the date and rim code on the lower left of the photo below [65 and 3 (March)], as well as one of the "nubs" on the rim of the '66 wheel (located in the pic of the link below on the rim opposite about half way down the stem)
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