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Question on Head Stud Threads
I think I did a foolish thing this weekend. I used a 10Mx1.5 tap (Snap-on) to clean out the head stud threads of any old loctite that might still be in there before I install 12 replacement steel studs. The tap threaded in with only mild resistance and didn't appear to be removing any metal in the process (or I'd have stopped immediately), so I wasn't initially concerned. Afterward, I tried threading in one of the old Dilavar studs and it threads in with no resistance at all.
![]() I'm sure the studs need to be a snug fit into the case and I'm angry at myself for doing this without checking after the first one (I know better)... ![]() Have I screwed up (no pun intended ![]() Btw, this is a '79 3.0 Alum case. Thx, Mike
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'84 Carrera Targa (3.0 with SSIs, Webers, DC-19 Cams, MSD) - Sold Last edited by SCrescue; 02-11-2008 at 02:34 PM.. |
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Join Date: Mar 2004
Location: So. Ca.
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A little green loctite and everything will be fine.
regards |
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Oh by the way use a thread roller like in a Time-Sert kit (for installing the insert) or one you can by from Snap On for thread restoration,m It will not cut material out but rools it back into place and restores the original pitch.
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I have the green loctite (hi Temp retaining compound 40), I guess all I need now is the thread roller. Thanks.
Mike ![]()
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'84 Carrera Targa (3.0 with SSIs, Webers, DC-19 Cams, MSD) - Sold |
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The thread roll tap is for next time, leave the case alone and assemble with the green Loctite that has bearing mount as a feature, high temp, etc.
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Don't worry about it. As long as the locktite keeps the stud from turning when you put on the headstud nuts you'll be fine.
-Andy
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72 Carrera RS replica, Spec 911 racer |
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I seem to recall just seeing a comment that a thread cleaner could be made from an old exhaust stud simply by using something like a dremel tool and a cutting wheel to make a slice in the threads, I assume perpindicular. Should this be done with a new stud or an old one. Should the slice simply be that, a slice or should one side or the other be tapered a bit to hold the loctite or whatever is being cleaned out of the threads?
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Buck '88 Coupe, '87 Cab, '88 535i sold, '19 GLC 300 DD Warren Hall, gone but not forgotten |
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Thanks for the sanity check guys (racing97 & Eagledriver)
Quote:
Mike
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'84 Carrera Targa (3.0 with SSIs, Webers, DC-19 Cams, MSD) - Sold |
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