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xs650 > > High Performance Modifications > > Top End Work > > Main engine studs.... HELP!!!!!!


Main engine studs.... HELP!!!!!!
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CoryJ
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Joined: Aug 18, 2009
Posts: 4
Location: Aurora, Co

PostPosted: October 6, 2009, 7:57 pm    Post subject: Main engine studs.... HELP!!!!!!

Any one have any good ideas on removing the (8) main engine studs that sandwich the whole the top end together? Need to have a crack in my case welded and one of the cam chain guide's screws have a tip from a impact driver snapped off in it. SO now I need to remove the big studs to drill and tap it correctly...... Help Please!!!!

P.S. already tried the old run to a hardware store and get a nut that backs up to the acorn nut on top. Doesn't work, studs are really in there!!!!
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jayel
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Joined: Apr 16, 2006
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Location: SE Iowa 1974 TX650A

PostPosted: October 6, 2009, 9:07 pm    Post subject: Re: Main engine studs.... HELP!!!!!!

use THREE nuts tighten against one another heat the cases with a propane torch (HOT) before turning studs out
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CoryJ
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Joined: Aug 18, 2009
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Location: Aurora, Co

PostPosted: October 6, 2009, 11:40 pm    Post subject: Re: Main engine studs.... HELP!!!!!!

jayel wrote:
use THREE nuts tighten against one another heat the cases with a propane torch (HOT) before turning studs out
Tried using 2 against the crown nut, but no heat. Although heat is what I was thinking. Hope this won't warp the block. Off to the hardware store in the morning for more nuts, and a torch!!! FiRe GOOD!!! UGH!
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gruff54
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PostPosted: October 7, 2009, 5:18 am    Post subject: Re: Main engine studs.... HELP!!!!!!

I borrowed a buddy's stud removal tool after the two-nut trick didn't work. I was afraid of heating with a torch(warping). The studs were really tight, but came out. I think it was a Craftsman set. I don't have a part #. It grips the middle of the stud where it won't damage the threads. I slid it down as low as I could to keep the studs from twisting. Good luck!!

gruff
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jayel
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PostPosted: October 7, 2009, 7:04 am    Post subject: Re: Main engine studs.... HELP!!!!!!

think the studs are red Loc-tited in needs heat to release the glue lol
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CoryJ
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PostPosted: October 9, 2009, 10:39 pm    Post subject: Re: Main engine studs.... HELP!!!!!!

Hmmmmm. Thanks guys. Needless to say, I never made it to the hardware store (I got a little too involved with a 12 pack of Odells 5 Barrel (Local Colorado brew)). I'm thinking maybe both now. Wonder if I heat the stud then use the puller, if that'll be better. My hold up on heat is that I actually have a matching numbers XS1B, and am trying as hard as possible to keep em matching for registration (just makes the whole process easier in Colorado). Thank you to everyone for the help.
Cory

P.S. From my Clymer manual it looks as if there may be a couple more bolts holding the cases together under the sump. Anyone have a 256 motor that can confirm this? My sump cover is sludge-locked on. Ha ha. Maybe some heat will get that off too!!!! Either way looks like I am not the first one to split the cases on this one, but judging by the "baby-poop" brown gasket glue/sealer that is on it, it's probably been at least 20 years since they were separated. Thanks again everyone. Awesome site! And great info for us first timers!
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xsleo
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Joined: Oct 28, 2007
Posts: 1528
Location: Earlville NY

PostPosted: October 16, 2009, 1:00 am    Post subject: Re: Main engine studs.... HELP!!!!!!

none in the sump, one behind the clutch.
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Srinath
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Joined: Sep 10, 2009
Posts: 343
Location: Charlotte NC

PostPosted: November 30, 2009, 12:36 pm    Post subject: Re: Main engine studs.... HELP!!!!!!

jayel wrote:
think the studs are red Loc-tited in needs heat to release the glue lol


www.sears.com/shc/s/p_...904458000P

To pull the head studs out, would somehting like that work ?
Thanks in advance.
Cool.
Srinath.
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650skull
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Joined: Jul 19, 2007
Posts: 1186

PostPosted: November 30, 2009, 4:09 pm    Post subject: Re: Main engine studs.... HELP!!!!!!

The XS1 and 1B has an extra one on the underside of the bottom case.

Quote::
none in the sump, one behind the clutch.
This is only on the electric start models from XS2 and later
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gordo
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Joined: Oct 09, 2008
Posts: 559
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PostPosted: November 30, 2009, 6:39 pm    Post subject: Re: Main engine studs.... HELP!!!!!!

Matco Tool's has a stud puller that is a pass through style. So you can get it down close to the case. Allot less twisting of the stud, and allot more leverage for removing the stud's.
How I did it was with the tool I described, and heated up the stud AND case, came right out. Oh, I used a Gearwrench on the stud puller, but a box wrench will do.
You'll also need a good anchor for the case, to keep it from moving around when you try to remove the stud's.

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