3” arp wheel studs installation

J_lope82 · Feb 12, 2022

Guys looking for tips/advice on how to install 3” arp wheel studs on new rear axle shafts. I just ordered two new drill bits to drill out the holes. I ordered a 37/64 and a 39/64. I couldn’t find them locally. I’ll try the 37/64 first and see how that works.
Any advice to make things easier Would be greatly appreciated thanks!!

lwarrior1016 · Feb 12, 2022

Check the arp site and see what size bit it calls for. When I did mine, I went straight up to the size it required. Use some never seize on the threads, if you have an old open end lug nut flip it upside down, stack some washers on the lug, and pull them in with a wrench.

Or you can get fancy and order a lug installer that is a nut with a bearing on it and pulls them in smoothly.

Warhorse Racing · Feb 12, 2022

I went with the 2.5" studs, but there's information about tools and install tips in this video that might help:

ttocs · Feb 12, 2022

when I needed to install longer studs it took a little bit of time to find one that would just press in but I did find arp made them. It would probably be cheaper than buying bits as well as you don't have the issue of messing the hole up.

J_lope82 · Feb 12, 2022

Did you all use a regular drill or a drill press? I dont have a drill press.

ttocs · Feb 13, 2022

the set I got all I had to do was pound them out with a hammer and then I used special bearing that I put on it and then used the impact wrench to pull it into the hole. Even with a drill press you run the risk of moving the hole a little bit.

J_lope82 · Feb 13, 2022

ttocs said:
the set I got all I had to do was pound them out with a hammer and then I used special bearing that I put on it and then used the impact wrench to pull it into the hole. Even with a drill press you run the risk of moving the hole a little bit.

The ones I got say you need to drill out the holes with a 39/64 drill bit.

ttocs · Feb 13, 2022

I think I got the same studs you did and was on the same quest as you to find the right drill bit. After that was the question of it I could keep the lined up perfectly and after a little while I got the other studs.

lwarrior1016 · Feb 13, 2022

J_lope82 said:
The ones I got say you need to drill out the holes with a 39/64 drill bit.

Those are the studs I used, and have installed on a few friends cars. Just a regular old hand drill. Cut slow and spray the bit with some wd40.

Wmac · Feb 13, 2022

Before you press/pull in the new studs, add some red loctite on the knurl. Little added security.

Somewhere I have read that M/M suggested about a .005/.008 interference fit.

white95 · Feb 13, 2022

Lots of good advice here.

Back when I did mine, I used the 39/64 bit and then pulled the studs in with an impact. Been sending it ever since.

J_lope82 · Feb 13, 2022

Yes i know I can always count on you all for some great advice. The drill bit will be in Tuesday. I’m off Wednesday so I’ll probably do it then.

Wmac · Feb 13, 2022

Used this on all 4 corners. Pic of front. Studs cut down to approx 2.5" to allow fitting of wheel centre caps.

ttocs · Feb 13, 2022

I was assuming that you would drill them out on a drill press but I am sure someone has done it on the car? How?

lwarrior1016 · Feb 13, 2022

ttocs said:
I was assuming that you would drill them out on a drill press but I am sure someone has done it on the car? How?

I did mine on the car, just used a hand drill.

white95 · Feb 13, 2022

ttocs said:
I was assuming that you would drill them out on a drill press but I am sure someone has done it on the car? How?

Removing the axles is extreme..

lwarrior1016 said:
I did mine on the car, just used a hand drill.

This.. Believe I was texting you videos while I did mine!

ttocs · Feb 14, 2022

eh then I am glad I was able to find the press in version myself. They are out there if anyone else is reading and I wish I had the model number of the ones I used to help.