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Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

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  #1  
Old 24th August 2020
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Default 84 top end disassemble

Hey all,

Having a hard time getting the last two bolts off the rear cylinder head. The frame is too tight to the head to allow an extension for my wrench, and its hard to get enough leverage with a universal joint. Anyone run into this issue?

Do I need to remove the engine from frame to do this? I want to keep it mounted as long as possible to help with the disassembly.

Thanks!
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Old 25th August 2020
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Might wanna remove the rocker box fasteners and wiggle it around for clearance. Gotta be the right head bolts. On my 77 and past 75 & 72, I used a 3/8" ratchet, 8" extension, swivel joint and the socket . . . from the left side of the engine. Works all the time.
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  #3  
Old 25th August 2020
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Do you have 12-point head bolts? My favorite tool for getting those off is a regular wrench with a cheater bar.
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Old 25th August 2020
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i had good luck with a wobble extension rather than a swivel joint, and +1 for removing the rocker bolts to make more room.
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Old 25th August 2020
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Go through. The pushrod side with a boxed end wrench to break it loose.
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Old 25th August 2020
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rocker box is going to come off anyway.get the bolts loose,pull up the ones you cant get out,make sure the box is loose,hold them up,and wiggle it off.then you can get to the head bolts.put it back together the same way you took it off holding the center bolts up,wigglein like a pole dancer,haha.torque the headbolts with the boxes off making sure you tighten them in stages up to 60 pounds.the thin copper ones are the best and spray both sides with Permatex copper spray a gasket both sides.works for me
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like Mike said remove the pushrods and you can use a box wrench on the right from the side.once you've done this you'll wonder why people fool around with swivels etc.from the top.
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THANKS FOR ALL THE ADVICE! JUST TOOK SOME FINESSE AND ONLY ONE SNAPPED SWIVEL.
SOME PROGRESS PICS. NOW ONTO BOTTOM END.



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Oh hey, you have the retrofit sprocket nut. Try to save that if you can - nobody makes them anymore.

To help with all that rust, a 50/50 mix of ATF and Acetone supposedly works as well as or better than commercial penetrating oils.
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Quote:
Originally Posted by BigMek View Post
... To help with all that rust, a 50/50 mix of ATF and Acetone supposedly works as well as or better than commercial penetrating oils.
Machinist's Workshop magazine in their April 2007 issue...
https://www.practicalmachinist.com/v...ng-oil-196347/
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