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General Category >> Rubber Side Down! >> Head stud - major issue?
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Message started by adberns on 09/27/14 at 13:24:35

Title: Head stud - major issue?
Post by adberns on 09/27/14 at 13:24:35

Hi, all --

I am attempting to re-assemble my Savage, which I bought in pieces from the brother-in-law. When it was still running, it seemed to run fine, but had an oil leak. I was thinking it was the head bolt plug leak, and I have the new parts on order to tackle this.

However, as I was examining the bike for any missing bolts, I noticed this on the stud at the rear of the engine block, just under the carb boot:

http://https://lh6.googleusercontent.com/-LQSDFG8GaIU/VCcbDX2lhzI/AAAAAAAABfQ/bXZhfDb6Jho/s800/20140927_150107.jpg

http://https://lh5.googleusercontent.com/-Co9HCG2xU5o/VCcbGQUgDpI/AAAAAAAABfY/GMfMZoSCqyE/s800/20140927_150057.jpg

From my brief look at the parts fiche, I think this is a stud, and should have had a nut on the bottom (and on the top). However, it has no nut, and furthermore the threads look either trashed, or it looks almost like a self-tapping screw. Either way, I doubt I'm getting a nut on there, but I will try.

Anyway, the question: this is a trashed stud that should have had a bolt, yes? And is the only way to fix it to remove the head, which would require removing the engine?

Title: Re: Head stud - major issue?
Post by Jsud04 on 09/27/14 at 13:46:22

Nut, yes. Repair... If the threds are trash then you must remove the head to fix it.

Take it from me, if it's not causing an issue, leave it alone.

Title: Re: Head stud - major issue?
Post by justin_o_guy2 on 09/27/14 at 13:53:45

IF,IF it needs a nut and the threads are screwed up,run a die up it. They can cut threads in rod,they can clean those up.. IF it doesn't turn... I don't remember that thing. I had the head cover off I think 3 times.

Title: Re: Head stud - major issue?
Post by verslagen1 on 09/27/14 at 14:03:45

weird, I never seen one F'd up that bad.
a smart person woulda f'd up the nut and did everything they could not to touch the stud.
It ain't easy to replace that stud either.
Kinda think it's pressed in from above.

These two studs some times leak, and the fix is to clean and apply locktite... use the blue not the red!

I'd leave it until you had to pull the head, cause you'll need a new head gasket. either figure out how pull the stud then or run the thread die on it... don't think you'll have an easy time getting a die on it now, unless you can find a small hex die for it. then use a wrench to turn it.

Title: Re: Head stud - major issue?
Post by Serowbot on 09/27/14 at 14:14:38

Big screwdriver gouge along the upper edge of the fin...(the things some people do)... ::)...
Try a nut... there's always the chance it will still thread on... if it does, back it off and add some loctite then tighten it down again... (don't strip it.. it won't be as strong as new)...