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Discussion Starter · #1 ·
well i adjusted the jets got those right no more red hot exhaust.. yesterday i started my 450 and let it warm up and i looked at the engine from a glance and had oil coming out the side of the block i called a welder and he said he could not heli arc it cause it is too thin he said to jb weld it that just seems stupid to me but i am needing advice i dont know what to do the four wheeler is in great shape no other problems with it except for this now any help with this would be good.... thanks :icon_twisted:
 

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How big of a crack is it?
 

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JB Weld will hold. I have a friend that snapped a U Joint while we were camping/4x4ing in the trucks. He actually used JB Weld to hold half of the U Joint together. Let it dry for the next 2 days, he is still running that U Joint on his drive shaft. That was 1.5 years ago.
 

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Yeah I have seen several people repair cracked blocks with JB Weld. If its done correctly it will hold fine and last as long as the rest of the bike. Make sure its VERY CLEAN and mix the to parts correctly and give it plenty of dry time.
 

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Discussion Starter · #5 ·
the crack is 3 inches long but its not a deep crack just enough to let a little oil come through im gonna jb weld it and i will let yall know how it turned out thanks so much
 

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the crack is 3 inches long but its not a deep crack just enough to let a little oil come through im gonna jb weld it and i will let yall know how it turned out thanks so much
Since it's a crack, I would drill a small hole in each end of the crack to keep the crack from getting bigger. Like they said, if you clean all the oil and grease off of it good and let it dry for the specified amount of time, it will hold. I've fixed some big holes in blocks, before, with JB Weld.

I would use Acetone to remove all the oil and grease. Acetone is good at dissolving oils and grease and it dries quick, without leaving any kind of residue behind.
 

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Discussion Starter · #7 ·
well the jb weld did the trick back to riding again and feeding cows.. thanks for your response it was helpful
 

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Glad you got it fixed. That JB Weld is some good stuff.
 

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It is amazing what JB will hold. Good job
 
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