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  #11  
Old 09-19-2013, 12:29 PM
maxpower220 maxpower220 is offline
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Originally Posted by CantRepeat View Post
Mr Graham is doing it right!
Looks like he is spraying for mosquitos.


While you can do both methods of fogging. Due to the sensors and the injectors, if I were you I would spray through the spark plug hole as the last step in fogging. I would also spray the whole motor with a product like WD-40 (there are some better products that won't evaporate as quickly).

Fogging is done to protect the steel cylinder walls from rusting due to some exhaust valves being open. If you fog while running the motor until is smokes for a little while, you still need to fog the cylinders after shutting down the motor. If your intake is aluminum, it won't rust and doesn't need fogging oil.
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  #12  
Old 09-19-2013, 01:27 PM
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Might be a stupid question - are new motors all aluminum? I don't think so...
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  #13  
Old 09-19-2013, 01:36 PM
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CantRepeat CantRepeat is online now
 
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The 5.7 is still cast iron.

http://en.wikipedia.org/wiki/GM_LS_engine
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  #14  
Old 09-19-2013, 10:08 PM
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Originally Posted by CantRepeat View Post
I looked through the 6.2 owners manual I downloaded from Ilmor before I posted. It has nothing in it about fogging under their winterization procedures.

http://www.ilmor.com/en/marine/recre...s-manuals.aspx

I believe the concept is that it's a dry intake and coating it with heavy oils is not recommended.
I know I've read it on a Ilmor owners manual before and I was surprised. Can't find anything about fogging now?
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  #15  
Old 09-21-2013, 09:44 PM
packman312 packman312 is offline
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Ok 6.2l has aluminum block, cylinder head, intake manis. Says cast iron exhaust mani. Does this explain the no fogging advice from some?
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  #16  
Old 09-22-2013, 07:24 AM
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Even though the block is aluminum it has steel cylinder sleeve inserts thus can still rust and corrode like any other block.
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  #17  
Old 09-23-2013, 02:45 PM
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Originally Posted by mikeg205 View Post
dry intakes no fogging thru intake - fog thru spark plugs - mine fogs like above pic...
Question -- If you fog through the spark plug holes then I presume you reinstall plugs and run boat? It seems to me that the smoke results from fogging through the intake via the fuel injection openings behind the air filter? What am I missing here.
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  #18  
Old 09-23-2013, 04:11 PM
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Originally Posted by Voodoo View Post
Question -- If you fog through the spark plug holes then I presume you reinstall plugs and run boat? It seems to me that the smoke results from fogging through the intake via the fuel injection openings behind the air filter? What am I missing here.
Reinstall the plugs, pull the safety lanyard and turn the boat over. You do not want to start the boat as that would burn off the oil. The idea is to coat the insides of the cylinders so they don't rust or corrode.
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  #19  
Old 09-23-2013, 04:29 PM
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Originally Posted by CantRepeat View Post
Reinstall the plugs, pull the safety lanyard and turn the boat over. You do not want to start the boat as that would burn off the oil. The idea is to coat the insides of the cylinders so they don't rust or corrode.
OK, thanks. So, the pic with the smoke -- would you agree that he must have been fogging while the motor was running?
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  #20  
Old 09-23-2013, 05:41 PM
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Originally Posted by Voodoo View Post
OK, thanks. So, the pic with the smoke -- would you agree that he must have been fogging while the motor was running?
I didn't give it any thought, but I assumed it was just steam and exhaust.
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