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weekend so arp office is closed,would like to drill today.anywho,need to but longer wheel studs in car and need to drill bigger holes in axles.knurl size is 5/8" or .625" . what size bit do i use to get proper bite. anyone????

Kevin 276

I just put ARP studs in last weekend for the north vs south, no drilling required. Just bang the old ones out and install new ones. Now if you are talking the larger than stock diameter studs forget it and send them back...we went through 3 drill bits trying to drill through that hardened plate, it is hard let me tell you.

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ok now i could be in big ****.the rear i ordered from moser had stock studs.i need now a 3" stud.sooo my parts guy says i need to go to a bigger stud . so he sold me these ford and chrysler monster studs from arp with a 5/8" knurl.i have 2" studs on the car now but the prostars xp i got have a 2" flange,sooo i need a 3" stud???? how long are your studs ya just but in????

Kevin 276

I also have a 12 bolt...the ARP's are roughly just went out and looked at the car, they stick out about 3/4" past the factory lug nut once its seated.

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you bet,those are the 2" ones i have.i am hoping with a hardened bit a guy can drill these out or i need to get a different wheel.???? prostar xp have too thick of a flange???

Kevin 276

If you could remove them and use a drill press, I am sure it would not be bad. Like I said, we had the car on the lift at stand up height using full body weight and more, with brand new bits and like I said, it was a bitch. I am also running the prostarts, 15x10 with a 7" backsapce the studs I used worked fine.

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how thick are the flanges on your wheels???? i have 16" prostars xp which have the 2" flange depth???? i have to drill or buy new wheels and sticky tires.

Hawkn01

iTrader: (1)

ARP has a hardened 12 mm stud that has a .505 knurl if you don't want to hassel with drilling. They will press right in and have worked fine for me. The guys at Moser recommended these. They are much stronger than the stock studs.

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i have arp 12mm by 1.5" pn 100-7708 in the car now, those are 2 inch.do they make 3 inch in this knurl size???? thks.

Squintz Palladoris

iTrader: (1)

Don't worry about the thick flange on the wheel. If you are using the correct lug nuts you will not have a problem. There are longer Studs out there that will fit the stock hole in the axle as I think was already mentioned here. That will help you with tech inspection if that is why you are worried about the flange thickness.

Brad

ktmrider

OK, the "Free Beer" title got my attention! Sorry I can't give ya any relevant info but sounds like the others have you covered. Good luck, motor on.

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thks Brad. that will do the trick if i could find this stud i need 1/2" longer to make tech at the track. arp's stud is the 1/2" short. who makes the longer stud and where do i order them from. thks. for the info!!!!

Hawkn01

iTrader: (1)

I have the Strange drag brakes so I'm able to run the race only Bogarts that don't have the spacer welded to the wheel. The ARP 12 mm studs worked for me with my set-up. I haven't had any problems so far with them. I've cut a best sixty foot of 1.49 and average low 1.50's at a 3100lb weight with a S/I car.

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looks like i get the beer.have to phone moser on monday.thks. all!!!