Wheels-Tires drilling out axles for arp ext studs

fredfifty

5 Year Member

Nov 23, 2011

318

57

59

SF Bay Area

Apr 19, 2020

#1

• Apr 19, 2020

• #1

so got some arp ext studs 2.5” going in my stock 4 lug axles. mm says to drill out axle flange with a 39/64” drill bit so arp one will fit. cant find a drill bit in that size. would a hole file work or a 5/8” drill bit work?

thnx

 

STEVE PATTON

I smell a conspiracy

Jan 6, 2019

201

89

53

ohio

Apr 19, 2020

#2

• Apr 19, 2020

• #2

fredfifty said:

so got some arp ext studs 2.5” going in my stock 4 lug axles. mm says to drill out axle flange with a 39/64” drill bit so arp one will fit. cant find a drill bit in that size. would a hole file work or a 5/8” drill bit work?

thnx

Click to expand...

I'm sure arp stud splines need to displace a certain amount of metal while pressing.Maybe a 19/32 and a round file ,youneed .6094"dia.

 

jrichker

StangNet's favorite TOOL

In Remembrance. Thank you for your contributions

Mar 10, 2000

27,512

2,813

234

Dublin GA

Apr 20, 2020

#3

• Apr 20, 2020

• #3

MSC Direct will have exactly what you need. Wheel studs are a press fit item and the hole MUST be the correct size for them to work properly.

See https://www.mscdirect.com/browse/Holemaking/Drilling-Drill-Bits?navid=12106070

 

redNfast

Active Member

Apr 5, 2020

70

33

28

Woodstock, GA

Apr 20, 2020

#4

• Apr 20, 2020

• #4

If it were me I would get that done by a rear & axel rebuild shop, unless you're a machinist . Not something a home mech should attempt.