Axle hole size for new studs question.
#2010933
02/13/16 02:55 AM
02/13/16 02:55 AM
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Mi.
G-Money1320
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I am installing new ARP 3" wheel studs in my axles. My question is what size smaller does the hole need to be safely for the knurl to properly be secured?? I have Moser axles and the tech said the holes are drilled at .656 for a .665 knurl and the new studs are .680. I can get a 43/64 drill bit that will open the hole to .671. Is that going to be tight enough or could I go a little tighter?? I will measure the studs and holes in the axles to get the exact measurements before any alterations, but would like any experience on the tightness if possible. Thanks!!
416 stroker from Nick at Compu-flow. 11.14 in full street trim. Seems like a new best every time out.
11.06 open headers----so far!!
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Re: Axle hole size for new studs question.
[Re: G-Money1320]
#2010957
02/13/16 05:29 AM
02/13/16 05:29 AM
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Bend,OR USA
Cab_Burge
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Last edited by Cab_Burge; 02/13/16 05:32 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Axle hole size for new studs question.
[Re: G-Money1320]
#2011298
02/13/16 08:13 PM
02/13/16 08:13 PM
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Rio Linda, CA
John_Kunkel
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.005"-.007" undersize hole is all you need.
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Re: Axle hole size for new studs question.
[Re: G-Money1320]
#2011303
02/13/16 08:19 PM
02/13/16 08:19 PM
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NC
440Jim
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I can get a 43/64 drill bit that will open the hole to .671 Remember, when you drill with a bit that is .671", the resulting hole will normally be slightly oversize, maybe +0.003 depending on machine and technique.
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Re: Axle hole size for new studs question.
[Re: 440Jim]
#2011629
02/14/16 10:40 AM
02/14/16 10:40 AM
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north of coder
moparx
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"Butt Crack Bob"
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north of coder
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I can get a 43/64 drill bit that will open the hole to .671 Remember, when you drill with a bit that is .671", the resulting hole will normally be slightly oversize, maybe +0.003 depending on machine and technique.  absolutely correct. possibly more depending on the runnout or play in the quill of your drill press. and if drilled by hand, any amount of problems can arise, from way oversize hole diameter,egg shaped holes, crooked holes, tapered holes, etc. 
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Re: Axle hole size for new studs question.
[Re: moparx]
#2012126
02/14/16 11:47 PM
02/14/16 11:47 PM
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Joined: May 2007
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Mi.
G-Money1320
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Thanks for the input, if it wasnt so cold here I could go out and knock one of the old studs out and get a measurement.Greg
416 stroker from Nick at Compu-flow. 11.14 in full street trim. Seems like a new best every time out.
11.06 open headers----so far!!
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Re: Axle hole size for new studs question.
[Re: G-Money1320]
#2012241
02/15/16 03:14 AM
02/15/16 03:14 AM
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Joined: Jan 2003
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Park Forest, IL
slantzilla
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Mr. Gasket makes a set with .665 knurls on them. I just went through this putting a set ij my stock Duster axles. .680's just would not go in.
"Everybody funny, now you funny too."
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I think they both use to offer them in the proper sizes, measure the I.D. of your holes before ordering them though 
I have had axles redrilled and tapped for 1/2 inch screw in studs for the 4.5 inch pattern also on the A body small bolt pattern axles in the past 
