I am in the process of installing Posers rear disc brake conversion on my 1965 FJ40. After reading many of the forums I decided to install longer wheel studs to accommodate for the additional thickness of the disc assembly. I picked up a dozen Dorman 610–414 studs only to find that the knurling doesn’t match the original studs, it is much too course and does not fit in the axle hub. I tried the NAPA 641-1628 option that I found on this forum but found that it didn’t even come close. I’ve read that the Dorman 610-265 works but no one in town carries them.
Does anyone on this forum happen to know if the early model FJ40 axles have a different knurling pattern in the wheel stud holes then later models?
OEM on the left and Dorman 610-414 on the right
OEM on the left and NAPA 641-1628 on the right
The shoulder on the NAPA part doesn’t allow the stud to engage the knurled portion of the hole.
You can see the damage done to the hole from trying to make the Dorman 610-414 fit.
Does anyone on this forum happen to know if the early model FJ40 axles have a different knurling pattern in the wheel stud holes then later models?
OEM on the left and Dorman 610-414 on the right
OEM on the left and NAPA 641-1628 on the right
The shoulder on the NAPA part doesn’t allow the stud to engage the knurled portion of the hole.
You can see the damage done to the hole from trying to make the Dorman 610-414 fit.