EVO All Evo Model Discussion

Double base gaskets????

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Old Mar 1, 2020 | 10:27 AM
  #11  
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Originally Posted by Racepres
Really??? You bought it New!!!
More than one person did not take Larry's advice

and popped a head Gasket,,, then rode with a Blown head gasket till they Flame Cut the Gasket Surfaces...
No Problem... just mill some off the head and probably Both ends of the jugs, and Go right??
Good point.
Thanks.
Thoughts are greatly appreciated, sarcasm, not so much.

I don't see any evidence of the surfaces being milled and I'm told (although people do lie) that this it the first time this motor has been torn down.
Hmmmm....
 
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Old Mar 1, 2020 | 10:34 AM
  #12  
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With the double gaskets, it's a certainty that someone's been in there before.
 
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Old Mar 1, 2020 | 10:36 AM
  #13  
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Originally Posted by Uncle Larry
EVO's love a bit of heat in the kitchen before taking off ... Give 'em a few seconds to warm up and feel the love ... Your gaskets will return the favor
. Good rule, rocker boxes need to be good n warm.
 
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Old Mar 1, 2020 | 10:51 AM
  #14  
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Any chance of a pic of this beaded gasket?
Just curious to see it.
Lots of things I haven't seen and this would be one.

WP
 
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Old Mar 1, 2020 | 08:42 PM
  #15  
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Originally Posted by 0maha
With the double gaskets, it's a certainty that someone's been in there before.
Yup...
So here's the fuller explanation of how I got to this point.
Bought the motor from a guy on ebay. He said he was the original owner and had torn it down to put in new cam and clean it up for a project bike (Powder coated rocker boxes, cam cover, etc...). For some reason he gave up on it and sold the motor to me... in pieces... although loosely bolted together.
In checking it over I discovered the double base gaskets, which apparently he put on but never tightened down on.
 
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Old Mar 2, 2020 | 04:53 AM
  #16  
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Ever tried to scrape off cooked on OEM base gaskets? Original owner tried and said F it, sold motor.

Don’t know about rubber base gaskets, always used Cometic metal with a spray of copper coat, unless the black coating is what they’re referring to, I spray ‘em anyway.

Your going to have to establish deck height to know what thickness gaskets you need, you want close to 0.00” or a little in the hole rather than out.

With base gasket surfaces clean, drop the cylinder on and measure how far the piston is above the deck, you don’t need the rings on the piston, if it’s protruding say .008”, go with a .010” base gasket to end up .002” in the hole.


 
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Old Mar 2, 2020 | 08:31 AM
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Originally Posted by Schex
Ever tried to scrape off cooked on OEM base gaskets? Original owner tried and said F it, sold motor.

Don’t know about rubber base gaskets, always used Cometic metal with a spray of copper coat, unless the black coating is what they’re referring to, I spray ‘em anyway.

Your going to have to establish deck height to know what thickness gaskets you need, you want close to 0.00” or a little in the hole rather than out.

With base gasket surfaces clean, drop the cylinder on and measure how far the piston is above the deck, you don’t need the rings on the piston, if it’s protruding say .008”, go with a .010” base gasket to end up .002” in the hole.
Pretty good... for Known Stock Components... Not Knowing what Pistons, or especially What Cam... I would Clay that engine!!!!
 
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Old Mar 2, 2020 | 08:42 AM
  #18  
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I'd love to see pis of the double gasket?
 
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Old Mar 2, 2020 | 08:54 AM
  #19  
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Originally Posted by Racepres
Pretty good... for Known Stock Components... Not Knowing what Pistons, or especially What Cam... I would Clay that engine!!!!
Loose a little time ... Save a whole bunch of money :>)
 
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Old Mar 2, 2020 | 08:56 AM
  #20  
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Originally Posted by 98hotrodfatboy
I'd love to see pis of the double gasket?
Will post pics after I get home today.
 
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