MG Sports Cars

I am trying to fit a ford 8 in and need to use a spacer for wheel clearence. I will need longer wheel studs. What are the specs on the studs on a B? I need the knurl diameter.
Thanks
Steve

The lugs are 1/2" by 20... but the diameter at the knurl depends on the Ford (or Moser, or Currie, or whatever) axle shafts.

My narrowed "Ford 8.8" axle shafts were made by Moser Engineering. The new lugs I put in them last week are 0.615" at the knurl. They're Dorman part number 610-280.1, which is a Ford pick-up truck lug. I selected these particular lugs because they would work well with my newly machined-down hubs (7mm now instead of ~10mm). They have grade-8 head markings plus an underlined "M" manufacturer's mark (and they were marked "Made in Canada" on the packaging. Dorman seems to be converting over to Chinese manufacturers.)

The Dorman site is pretty good: [www.dormanproducts.com]



Edited 1 time(s). Last edit at 02/25/2008 05:44PM by Moderator.

Cutris,
I am using MG axels. I need the knurl diameter of the MG stud.

Steve

In that case... I'd press or hammer out an old stud and measure it. You can go up a little in size when you replace the studs (since the hole gets bigger with each lug installation.)

The Dorman site doesn't list a stud for an MGB-GT.

.509 knurl on the MGB studs. I am fitting spacers to my MGC WW axle to bring it to steel wheel width so I have to use longers spacers. Compounding this, I want to keep my OE V8 wheels and wheel nuts so I need to keep with the ½-20 threads. The closest knurl diameter I have found to the OE MGB studs that are longer have a .562 knurl (Moroso), so that means I'll have to drill out the hubs and shorten the knurled portion to fit the brake drums. I am almost ready to run the FEA on it to see how it will function stress wise, hopefully it won't be a problem.



Edited 1 time(s). Last edit at 02/27/2008 10:28PM by filospinato.

Jake,
That's what I've found also. No one seems to make longer studs with that knurl diameter. I do not have to space mine much, so am just goint to see if I can use the sock studs.

Steve

Well, there are longer studs with that knurl if you don't mind a 12mm thread.

ARP 070-100-7713
.509'' Knurl Wheel Studs
Late GM (F-body, Corvette)
12mm x 1.5
3.250" long
5 per package


ARP 070-100-7708
.509'' Knurl Wheel Studs
Most late GM (F-body, Vette)
12mm x 1.5
2.5" long
5 per package

When I put in my 8" ford rear I made it shorter and put 1/2" spacer on each side.
I had longer studs put on and my lug nuts that worked on the MG still work on the Ford rear.
I do not remember the lenghth or size but they were at least 1/2" longer than stock.
Denny

Thanks Jake and Dennis. I will have to find out if I can get the proper wheel nuts to go with my Keystone Mags in 12 mm thread.
I would probably change all four hub to that thread if it will work.
I am running the spacers with the stock studs and it seems to be doing fine. I'll keep looking.

Steve

I would seriously consider NOT switching to mixed threadsizes. so if you swap the back then also swap the front. Personally I am reboring the holes and going with the larger size. Alternately you could use headed bolts, both Dorman & Moroso have them.

There's also the option of screw-in studs to find what you need.