Posted by Clint Dixon [172.68.58.14] on Tuesday, February 19, 2019 at 19:34:36 :
In Reply to: Heading out to the shop now posted by Clint Dixon [162.158.74.180] on Tuesday, February 19, 2019 at 18:25:44 :
Thread lengths vary from 2.25 to 3 inches long. All widths are from inside of leg to inside of leg - 1.8125 inches. All lengths are measured from the underside flat of the saddle to the ends of the legs:
'47 WDX rear U-bolts - 9 inches long
'51 B3PW rear U-bolts - 9.25 inches long
'47 WDX front driver side U-bolts - 8 inches long
The parts lists are not much help. They indicate several changes over the years. My '47 and '51 have vastly different springs with different rates, however the U-bolts vary only slightly in length. It appears the parts lists also measure the overall length instead of from bottom flat on saddle.
Junior
'51 B3PW front driver side U-bolts - 7.50 inches long
'47 WDX front passenger side U-bolts - 8.25 inches long
'51 B3PW front passenger side U-bolts - 8.25 inches long
All U-bolts have cut threads. The non-threaded portions of the shanks measure from .560 to .566 in diameter. The thread major diameters measure from .554 to .558 diameter.
I have an original NOS overload kit (uninstalled), also with 9/16-18 threaded U-bolts. They have rolled threads. The widths between the legs measure the same - 1.8125 inches. However the non-threaded shank portions measure .525 diameter. The thread major diameters are right at .558 inches.
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