Projects break drum

ok

 

Did they fit before painting/coating?

 

Is all of that stuff powder coated? Could be your problem right there.... clean it off.

 

Machine them? I would just hit them a bit with one of those rubber sanding drums you put a sand paper sleeve on.
The slight amount you need to remove should dust out of them really quickly.

 

If the difference is only 0.005" scraping the paint off the mating surfaces may be enough, or just spending a few minutes cleaning things up with a file. If machining is required I'd do it to the drums, since the hub is original and the drums are aftermarket.

 

Looks like you'll have to drill the stud holes a little over size? Speedway drums have had problems in the past.

 

Your new studs aren't for that set up.
Get the right studs or drill out the drum to accept that shoulder

 

X2^^^

 

Absolutely correct.
If you had the right studs the shoulder would be shorter and wouldn’t stick out like that.

Simple, measure that shoulder and drill the drums.

 

Because your drums pilot on the hub you can drill the lug holes oversize with no issues.

 

I'm guessing here ,,,,
Studs for swedgedededed drums but trying to fit them like a slip on.

Mixing apples and oranges gives orpleange and other things that don't make sense.

 

Wondering, will the drum take up enough of the shoulder protrusion so that the
wheel will seat properly and not have the same issue as the drum?

 

I would first try using a 45 degree chamfer tool on the insides of the drum stud holes, probably a 1/16" chamfer or so would be enough to get them to sit flush.

 

I have done exactly what you are doing many times ( original hubs, 610-234 Dorman studs and new Lincoln style break drums ) the drums are hub centric all you need to do is drill out the stud holes so there is no binding on the studs to allow the break drum to center on the hub.

 

You’re probably referring to brake drums,
They’re certainly not break or breaking drums
If so they’ll need replacing.

 

Don't screw around with your drums. Go to your supplier and find a Dorman stud the same length in a 1/2 20 thread, but with the shorter shoulder. I went through the same thing. Sorry I don't remember the part number.
And you thread title slanders Speedway when you actually installed the wrong studs.

Warren

 

I used studs for a F1 and they fit the drums perfectly.

 

Perfect. Why don't the "techs" at Speedway know this? They gave me a Dorman part # that didn't work - 610-234. But Dorman 601-109 is what you recommended and they are right on.

 

Specs for Studs Dorman 610-234 1/2" - 20 .621 Knurl 1 5/8" Length
Dorman 601-109 1/2" - 20 .625 Knurl 1 5/8" Length