Wheel Stud Q

[modular93fox]

I was wondering if there will be complications further down the road.
Application, C-10 stock 10-bolt, stock axles.
Upgraded to 13.8" Dodge rear brakes.

Factory studs were not long enough and therefore needed to be replaced. Dorman shows them (stock) to be at a .535 knurl and there is nothing offered in a longer length. What I found and used was a longer stud that had a .547 knurl (.012) larger. Didnt see a bit that would fit the new knurl size so I just pressed them in with a hammer and used a vice with the mouth opened up just enough so the stud passed through it. Went in fine, no problems, been on the the truck for a few months. I just read a thread about ATS spindles and upgrading to 1/2 studs something about .006 interference fit... according to that number, I'm double that. Also in that page, it sad something about cracking or distorting the hub??? Im talking about the rear axle...
Thoughts, Opinions, Solutions?
clint

[Apogee]

Clint,

Which wheel stud part number did you use? Was the knurl count similar to the ones coming out? If they were and are a fairly course knurl, you should be fine as the material will flow around the knurl to a certain extent when you pressed them into the axle flange, so the true interference can be difficult to determine unless you knew the original size of the hole, prior to the first set of studs being installed.

You could spin the axle and measure the runnout on the truck to get an idea about the runnout or you could pull them and throw them in a lathe if you want to know exactly where you stand. My gut tell me you're fine at .012" interference...my engineering judgement says you should pull the axle and make sure nothing has plastically deformed to the point that there's a potential problem. You wouldn't probably be asking unless you were concerned, so you may as well put your mind at ease rather than assuming you have a problem where one may or may not exist.

Tobin
KORE3

[dipren443]

Actually... Wouldn't you halve the diameter difference which would make it a 0.006" interference? The difference in knurl is 0.012, but you would only be displacing 0.006" of material around the circumference?!?!

[CHILI442]

What size was the original hole? I believe Dorman recommend .017 - .027 interference.

[modular93fox]

not sure of the original hole.. I do plan to purchase a set of Mosers economy axles once I finish mocking up my rear disc brakes... but I was curious about the wheel studs and all... I guess when I order the axles, I can just tell moser I want to run a certian size knurl? anyone order a set of axles from them before?
Thanks for all of the help too
clint

[Bryce]

I have order moser axles before. I think I went with screw in studs. i like screw in studs better.