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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Engine » Big Mechanicals: Head, Cyl, Piston, Rod, Crank, Flywheel, Cases, Bearings » XB12X rear head oil leak at top - requesting help/advice « Previous Next »

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Joypipe
Posted on Wednesday, July 06, 2011 - 03:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hi I have an 08 XB12X Uly and there seems to be a leak from the top
gasket of the head. I've already bought a new upper and lower gasket
and replacement fiber/gaskets for the screws. I think all that is left
is to figure out how to rotate the engine in my garage or at the
Military Base Hobby shop.

How should I support the bike while I do this? What would the McGiver
solution be if I don't have specialized equipment?

After removing the bolts holding the engine in how do I rotate it safely
to work on the rear head? I'm big and strong.

I heard someone had pictures on the site of a XB12 rebuild but can't
find them.

I have all 3 manuals, parts/service/maint. Service manual has a nice
section on rotating the engine for headwork. It's very specific on how
the get the engine to rotate but I don't have experience with engine
work so I'm fuzzy on how to manuever everything else.

Any advice would be appreciated!

-Chris Smith
Colorado Springs, Co
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Fordhotline
Posted on Monday, June 04, 2012 - 12:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Chris,
How did you make out with this project? I have noticed a leak in the exact same spot. Was repair straight forward with no surprises?
Thanks
Curtis
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Mtnmason
Posted on Sunday, July 08, 2012 - 02:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Rocker box gasket leaks are somewhat common on XB motors. The OEM gasket is not as good as the aftermarket gasket. Also, if youve re-routed the crank case breathers this supposedly puts more stress on the gaskets due to the air having to travel a longer distance to escape. My re-route had the tubes going to the rear of the bike and emptying back of the seat. When I replace the RB gaskets I plan on routing the breather plumbing forward of the engine for quicker escape. Below is a link for a pictorial on engine rotating. If youre replacing the gasket I think you'll need to rotate the engine down a little further than in the write up. Good luck - it will take the better part of a day but it is by no means 'major surgery'

link:

http://www.buellxb.com/Buell-XB-Forum/Do-It-Yourse lf-Buell-Mods/How-to-Rotate-your-engine--With-Pics
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Reepicheep
Posted on Monday, July 09, 2012 - 08:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The old style paper tuber rocker box gaskets were junk, but the new metal style (for XB and Tuber) have seemed worked well for me.
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