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basmn

07 trx400 oil drain bolt housing cracked

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A friend has a 07 trx 400ex..the engine drain bolt housing has a couple of cracks where the drain bolt threads in and is leaking oil...a one had any luck sealing this area with JB weld or something similar ?

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We had a member that had this problem.  It’s a tough call working with this sort of thing.  

JB well does work but it’s not a permanent fix by any means.   There are secondary drain plugs you can install that get installed and they have another drain plug that’s within the new plug. Much smaller hole but it works.  You could install that and carefully thread it in with high heat silicone.  That should hold on for a while but you have to constantly check it.  

Second way to do it is have a good heli arc welder weld the cracks and maybe re tap it.  

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Thanks Frank...do you have a link to the secondary drain plugs please?

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Hey Bro I used these myself on spark plugs that got striped out and never had a problem so thing I go this route over the JB weld any time.I used it ti in crazy places always worked but if you lost the oil that work but the end if it.

Good luck hope it works for ever what route you choose buy heli coil is very safe and no real pressure on it either like a spark plug has 

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Problem solved...took it to a reputable welding shop  ( engine still together ) and had them weld it up....works like a charm...only $200 for the repair, compared to stripping it down and replacing the engine case.

😋

20200318_105655.jpg

20191222_142725.jpg

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Yes...skill indeed...the welding shop is not cheap..but do excelent work.

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I don't think you can put a price on that fix.  Splitting, locating a covet and reassembled is a number i don't want to think about! $200 is a score.  

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3 rides since the repair and NO LEAKS ....all good best $200 spent I'd say

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