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SmokeEater829
MMT 1000 Club
Joined: Sat Jun 13, 2009 8:48 pm
Posts: 1830
Location: Belle Chasse, LA
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 Replacement case gasket Got a buddy that needs to replace the case gasket on his motor. Mud Buddy 35 with some mods. Which gasket is the best to use? Go back with a stock gasket, or use the FelPro? I seem to remember something about a copper gasket, but maybe I'm wrong. According to my wife, it happens often.
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Mud Buddy 4500 Black Death hauling the Uncle J 18x58
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| Thu Dec 19, 2013 1:13 pm |
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stumpjumper
MMT Pro Member
Joined: Fri Aug 06, 2010 11:39 am
Posts: 166
Location: Luling, Louisiana
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Re: Replacement case gasket I went with the stock gasket and permatex ultra grey rtv silicone gasket sealant.
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35HP GATOR TAIL GTR W/ MARSHMELLOW EXHASUT AND MINKUNI CARB PUSHIN MY BIG AZZ AND A
16 X 50 ALUMAWELD HULL.
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| Fri Dec 20, 2013 12:03 am |
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p5388
MMT Pro Member
Joined: Wed Jul 24, 2013 9:16 pm
Posts: 232
Location: Deep East Texas
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Re: Replacement case gasket X2 on the stock with grey permatex - both sides on with the permatex though - engine and sump cover, sandwich the gasket in between... BTW, if you haven't figured it out yet, the the most important words you can learn are... "Yes, Dear..." 
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The key to a successful marriage?
Give a man a 4X4 truck, a rifle, a shotgun, a Mud boat, and a fishing pole - he will be out of your hair most of the year...
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| Fri Dec 20, 2013 12:20 am |
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breakuplandreneau
MMT Pro Member
Joined: Sat Mar 20, 2010 11:20 am
Posts: 143
Location: O' piece a' loose azz
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Re: Replacement case gasket Just a quick question, why even use a gasket if your gonna put permatex on both sides? All a gasket does is fill the imperfection between two mating surfaces of metal, if a sealant is going to be used then should a gasket be used also? I'm about to change out my case gasket on my own motor and I was gonna use the gray permatex by itself, but if there is any clearance issues that require a gasket then I'd like to know.
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Brother Breaux 18x54 and a 36 Prodrive with all the goods
1851 excel with a 35 mudbuddy.......sold
17x42 geaux skiff with a 27 prodrive........sold (should've kept this one)
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| Wed Dec 25, 2013 8:01 pm |
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dfou
MMT 1000 Club
Joined: Sun Dec 12, 2010 12:38 am
Posts: 3986
Location: Pville, La
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Re: Replacement case gasket
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| Wed Dec 25, 2013 8:04 pm |
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AKA Freshwaterkilla
MMT Elite Member
Joined: Sun Jul 29, 2012 12:06 pm
Posts: 6584
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Re: Replacement case gasket
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| Wed Dec 25, 2013 9:03 pm |
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Will
MMT Elite Member
Joined: Fri Jul 08, 2011 1:54 pm
Posts: 8133
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Re: Replacement case gasket
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Before the internet, the majority of the village idiots stayed in their villages.
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| Thu Dec 26, 2013 5:43 am |
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breakuplandreneau
MMT Pro Member
Joined: Sat Mar 20, 2010 11:20 am
Posts: 143
Location: O' piece a' loose azz
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Re: Replacement case gasket So Will, I guess your saying that if a sealant is used it should be a very thin layer so as not to affect the thrust load on the cam and crankshaft? This was my original thoughts I just wanted someone else to confirm it.
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Brother Breaux 18x54 and a 36 Prodrive with all the goods
1851 excel with a 35 mudbuddy.......sold
17x42 geaux skiff with a 27 prodrive........sold (should've kept this one)
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| Thu Dec 26, 2013 7:35 am |
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Will
MMT Elite Member
Joined: Fri Jul 08, 2011 1:54 pm
Posts: 8133
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Re: Replacement case gasket I would say so, the main engine guru's say no sealant at all if you're using a gasket, just get it surgically clean and locktite the bolts. The gasket is not what causes the fail, it's the bolts becoming loose and the case moving around that makes the gasket fail. The shitty block design is the flaw. It's literally the other side of the block so you can imagine the crank shaft working on it when things become loose.
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Before the internet, the majority of the village idiots stayed in their villages.
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| Thu Dec 26, 2013 7:40 am |
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