Wheel stud confusion

[tirwin]

I wanted to install longer wheel studs so I ordered 72mm bullet nose from Sway-A-Way.

I read where others had successfully installed 72mm on the rear hubs by removing the parking brake adjuster. I知 redoing the rear brakes anyway so good timing.

I got everything off and the old studs came out. But the new studs are too long to fit. The gap between the backing plate and the hub is 62mm.

The total length of the new studs is 85mm.

Either I was sent the wrong length studs or the extra length of the bullet nose is not accounted for in the size specs.

SAW is not open on Saturday and I知 trying to figure out if I知 at an impass or not, otherwise I would just call them.

If these are the wrong ones, I知 better off waiting until I can get the right ones.

If these are the correct ones, then I need to figure out to move forward.

Short of replacing the wheel bearing (no desire to do that right now), the only other thing I can see to do is to get out the dremel and cut a U-shaped channel in the back plate big enough to pass the stud through.

Thoughts???

Thanks in advance.

[75 911s]

Tim, I think you may have seen my vid of passing a 72mm stud through - mine were non bullet nose..

Sorry, but no pic of the total length of the 72 non bullet nose version,
but here's a comparrison next to the stock 45mm studs



Line yours up with the hole and plate, is it about as long as this one?



If so, come in the hole at a slight angle, then carefully wiggle the hub back and forth. Do not force anything. It will go in with enough wiggle. (unless the bullet nose are longer than these)

Edit: Oh here's my video

A great tutorial on #pelicanparts forum says 67mm studs might be the longest stud you can fit through the back without taking the rear hub apart on your #classicporsche -72 mm studs can actually be put through with a bit of wiggle and removing the brake adjuster as well as one splash shield bolt/nut. You also don't have to remove the hard brake line, just pop the clip off the trailing arm and move the caliper out of the way so you can get the brake disc off. #shadetreemechanic

A post shared by Duane Wik (@duanewik) on Aug 11, 2017 at 11:15am PDT

[tirwin]

Thanks, Duane. That is very helpful.

Unfortunately, these studs look to be slightly longer than yours. I have tried wiggling as you suggested but they are too long. All I’ve done is chew up the finish of the bullet nose.

What I don’t understand is if it’s supposed to be 72mm PLUS the bullet nose or INCLUDING. I looked at the specs again and it confuses me even more. I can’t figure out how they are measured.

Total length is 85. 85 - 72 = 13mm so about 1/2”. That’s a good bit longer but again I’m not sure what the relative measurement is from and to.

[75 911s]

I think someone else claimed 100mm studs without removing the hub. Bustarib maybe? I forget how it was done. To be honest, leaving the hub on is kinda mickey mouse. Best to take it off and press the studs in - but life doesn't always go that way.

[tirwin]

I think I found the answer.

Looks like the trick is to make a cut on either side of the captive nut and then bend it backwards out of the way and then bend it back in place when done.

Pics in this post:
max wheel stud size wihout pulling Hub

I would probably feel better about using my press but man I just do not want to tackle replacing the rear wheel bearings right now if I can help it.

[Busta Rib]

I installed 100mm studs in the rear without any cutting. Remove the parking brake assembly and dust shield. On the inboard side of the hub/arm, you will find a small hole to thread the stud through. Line up the hole with the hub, push through and then use the double-nut technique with an impact gun to pull it through. I bought about 4 nuts that I didn't have to worry about re-using to pull them through. They get pretty beat up from the gun once you are all done. Good luck.

[tirwin]

Oh I get it now. I did not remove the parking brake assembly. Roger that.

Have plenty of sacrifical nuts. Got some cheap ones to use to beat the old wheel studs off.

Thanks!

[tirwin]

Boom!

Thanks, guys! Pelican braintrust comes through again.

Unfortunately I didn稚 have enough time to get everything done so I put the wheel back for a quick test fit.

I知 happy with the way it turned out.

[Busta Rib]

Looks good, Tim.