EVO All Evo Model Discussion

Reinstalling cylinders

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Old Nov 28, 2012 | 10:05 AM
  #21  
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Originally Posted by HarleyReece
Nothing was decked. 9.5-1 comp pistons now. The manual shows an o-ring that sits ON TOP OF the dowels.

So no still?
decking the pistons is a simple measurement with each cylinder at TDC in it's bore without the head on...when the piston is at its highest point in the bore, with the cylinders fastened to the case (not torqued!)... the top of the piston at its edge should be flush with the surface of the cylinder...if it rises higher, you obviously need a thicker head gasket...if it's lower, then a thinner one...if it's spot on, then no worries... stock or something thinner is fine, depending on build

you should do this to make sure you have the proper guaged cometic gasket, unless everything is stock...in which case, your head gasket should be a stock .045

and no, you do not use the o-rings with cometic gaskets....also, cometic likes you to use their torque procedures...not what's outlined in the HD manual
 
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Old Nov 28, 2012 | 01:46 PM
  #22  
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Originally Posted by HarleyReece
Nothing was decked. 9.5-1 comp pistons now. The manual shows an o-ring that sits ON TOP OF the dowels.

So no still?
Gasket sets that don't need the dowel O rings don't come with them.
 
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Old Nov 28, 2012 | 05:37 PM
  #23  
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No on the o rings with the cometic head gaskets, or the newer stock Harley head gaskets. They don't use them. Be careful torquing those cometic gaskets down. Their instructions call for a torque of 42 ft lbs. Go easy, you don't want to pull a stud out of the crankcase. I just went through that little repair.
 
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Old Nov 29, 2012 | 12:26 PM
  #24  
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Got her all locked down now. Followed cometic torque procedure, and went back after a couple of hours and rechecked to make sure all was well. Started to do push rods and rocker boxes, but decided to repaint lifter blocks ( I know, I should have done that already) and with that, wanted to get rid of the 12 point bolts and change em to Allen head.

She's coming back together ok so far. Should know for sure tomorrow when I fire her back up.
 
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