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  1. #1
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    Default Panhead Head Bolt Tool recomendations

    Spent this afternoon pulling everything I needed and am all ready to pull the heads on my bike but have run into an issue. The mo0tor is pretty fresh, maybe 2,000 miles on it and it has 12 Point bolts for the heads. I first tried a 7/16" x 12 point flex socket but I don't want to put to much force on the socket. I then tried an old Craftsman box end wrench with a helper and bent the body of the wrench!

    I really hate taking a torch to the motor with it in the frame, but I am guessing that is my next step, to heat up the heads that is. Before I go that route, is there a "special wrench" for this job?

    I am open to suggestions, thanks,
    -DB

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    What kind of head bolts do you have??????? 7/16???????? Who put them on???????

    I wouldn't torch it unless they used locktite............. If it were me I would ask who ever put it together if they did something stupid like that...........

  3. #3

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    The best thing to use to loosen head bolts is the HD 3/8 drive tool, which has a 90 degree bend on each end and different length legs. You could duplicate one by heating and bending a long 3/8 drive extension. Use appropriate socket.

    Next best is a 3/8 drive torque adapter and a breaker bar. (The torque adapter is essential to torque the bolts upon assembly.) BUT, on a pan, you may not have enough room for the torque adapter on the two bolts between the cylinders. (No problem on a shovel.)

    Jim

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    Torque adapter ordered, will start there and make sure I can break the to inner ones loose.

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    Yea they work very well.......... But a 7/16????? Why???????
    Attached Thumbnails Attached Thumbnails MVC-002S.JPG  

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    Somewhere down though that motor's life, the headbolts was changed out from the Oem 9/16" 6 point bolts to the 12 point 7/16"....
    S&S been using the 7/16" for eons ....

    Max Torque on those Bad-Boys is 65 lbs ..
    (That's dang near two grunts and a fart for the one's that go by the seat of the pants method)



    (If you soil your knicker's .... You over-torqued em)
    Last edited by Dragstews; 12-08-2019 at 8:04 PM.

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    These are S&S, what was on there was 70's chopper acorns.

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    Quote Originally Posted by DoomBuggy View Post
    These are S&S, what was on there was 70's chopper acorns.
    So they were cool looking????????

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    Quote Originally Posted by Tattooo View Post
    So they were cool looking????????
    12 points makes for much easier access working the bolts than 6 points do...

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    Quote Originally Posted by Dragstews View Post
    12 points makes for much easier access working the bolts than 6 points do...
    I get that....... But a 7/16 for a head bolt?????????

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    Quote Originally Posted by Tattooo View Post
    So they were cool looking????????
    LOL anything but, this poor old girl was not treated well in the later part of her life.

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    Quote Originally Posted by DoomBuggy View Post
    LOL anything but, this poor old girl was not treated well in the later part of her life.
    I really like acorn nuts myself....... just in case you don't believe me.......LOL
    Attached Thumbnails Attached Thumbnails Sexy DG Aug 2018 -10.jpg  

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    Quote Originally Posted by JBinNC View Post
    The best thing to use to loosen head bolts is the HD 3/8 drive tool, which has a 90 degree bend on each end and different length legs. You could duplicate one by heating and bending a long 3/8 drive extension. Use appropriate socket.

    Next best is a 3/8 drive torque adapter and a breaker bar. (The torque adapter is essential to torque the bolts upon assembly.) BUT, on a pan, you may not have enough room for the torque adapter on the two bolts between the cylinders. (No problem on a shovel.)

    Jim
    I strongly agree and those bent extensions are the standard home modded tool since forever. Makers should use a quality extension and don't forget to hang another extension off that one or a close fit cheater tube for the extra leverage and finer control that offers.

    Those new to bending extensions should use another, longest available extension to hold the square drive end while bending and protect the ball detent spring from being annealed by the torch. The tool still works without it but the detent beats chasing loose sockets around the shop.

    I get that....... But a 7/16 for a head bolt?????????
    Smaller heads permit for easier access. That's why (along with slightly lighter weight irrelevant on a motorcycle) that bolt in an aircraft application would have a 7/16" 12 pt. head. Of course aircraft bolt specs tend to be superior and typical aircraft mechanics use quality tools so the small size poses no stripping issues and doesn't result in many split sockets.

  15. #15

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    [QUOTE=farmall;834766]I strongly agree and those bent extensions are the standard home modded tool since forever. Makers should use a quality extension and don't forget to hang another extension off that one or a close fit cheater tube for the extra leverage and finer control that offers.

    Those new to bending extensions should use another, longest available extension to hold the square drive end while bending and protect the ball detent spring from being annealed by the torch.

    I am having trouble grasping this. Could someone post a pic of the bent extension?

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    Last edited by Dragstews; 12-09-2019 at 9:07 AM.

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    ^^^^^^^^^^Yes that or.....^^^^^^^ These..........
    Attached Thumbnails Attached Thumbnails MVC-006S.JPG   MVC-003S.JPG  

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    Those posted box end wrenches are typically called "starter wrenches" originally popular for getting around automotive starters. They work well.

    The bent extension is just a 3/8" drive extension with a roughly inch long L at the square drive end. Copy the bottom bent extension but only modify one end then stick another extension in the female square drive hole. Anywhere between the two bend lengths shown will do, I'm not sure why he bent both.

    Pic is not mine. It's from the AMCA site but you have to register to view so that's off a Pinterest screenshot.
    Attached Thumbnails Attached Thumbnails Screenshot_2019-12-09_10-33-24.jpg  

  19. #19

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    Bottom tool in farmall's pic is the HD factory tool (made by Kent-Moore, like most HD tools).
    Part # 94590-73.

    Jim
    Last edited by JBinNC; 12-09-2019 at 10:36 AM.

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    I’ve heard people running old cars so the heads get hot so you can remove the exhaust manifold bolts easier because of the heat. Those tend to be cantankerous and sounds like yours are being that way as well. Can that be applied to these, if you’re having trouble getting them loose, instead of using a torch?

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