re-fabricated magnetic oil drain bolt/welding it inside main

franknorway · Dec 30, 2008

Quick question: i stripped, because i'm an idiot--the magnetic oil drain bolt--probably becuase the bolt doesn't have a rubber seal/washer (i forget the name of it right now?) so i've been draining my oil through the main oil drain bolt that sits right next to the magnetic oil drain bolt. To make a long story short. 6 months later, i notice a lot of small metal shavings everytime i drain my oil. this is probably a result of the magnetic bolt (which will no longer come out becuase it is stripped) is probably chalk full of metal shavings already so the excess just floats around inside the oil. so today i took another new maganetic oil drain bolt and had it welded into the main oil drain bolt (SEE attached picture) thinking/hoping that this will now act as a my new "Magnetic" drain plug. but after all of the welding and heating of the bolts with a welding torch (here comes the question--is it possible that all the heat from the welding torch "de-magnetized" the bolt so that it no longer has magnetic abilities?? the reason i ask is becuase, after i was finished, i touched the end of the bolt (where the magnet is) against some metal--i.e screw drivers, bolts, washers, etc. and it has no magnetic pull??

thanks, Frank

magpie114 · Dec 30, 2008

RE: re-fabricated magnetic oil drain bolt/welding it inside

Thats the quickest way to demagnetise it. If you heat a magnet above a certain temperature called the curie temperature it will lose its magnetism. It depends on the type of magnet but usually its about 700C or more.

greasygas · Apr 26, 2009

RE: re-fabricated magnetic oil drain bolt/welding it inside

cant see the shavings being from the bolt threads really how did you get it to seal after stripping threads? isnt the bolt beside it for the strainer screen ? how often do you change oil ? filter? hope you get it solved ,casnt be good you engine as its sharing this oil thru out .
good luck

Badvoc · May 14, 2009

RE: re-fabricated magnetic oil drain bolt/welding it inside

Why didn't you just Helicoil the plug hole and then its as good a new. cant now as you've welded it up unless you drill it out.

franknorway · Jun 14, 2009

RE: re-fabricated magnetic oil drain bolt/welding it inside

update: No, i never welded the plug hole shut. i simply welded a new magnet to the inside of the oil plug that holds the long skinny oil filter. however, that weld did not hold and the magnet came loose and fell off where i retreived it and tossed it into the garbage because it seemed to be de-magnetized anyway. since then, the other oil plug that normally holds the magnet in the middle of the plug has been newly helicoiled but to one size larger than the original size hole, which means, i now have two functioning oil drain plugs but no more magnet because the new plug is bigger than the original and only the original comes with a magnet built into it. So,i'm curious, any ideas how i can get another magnet attached to the new oil plug so that it can catch the loose metal shavings??

bushmechanic · Jun 14, 2009

RE: re-fabricated magnetic oil drain bolt/welding it inside

I dropped mine and broke the magnet.

i drilled through the nut from the outside till i hit the magnet then hit it out with a drift. welded up the hole and put a new stronger magnet in from the other (in) side, they are cheap on ebay.

you could also just stick a really big rare earth magnet on the outside of the drainplug like a 1/2 inch cube it should stay on by itself.

franknorway · Jun 15, 2009

RE: re-fabricated magnetic oil drain bolt/welding it inside

Good suggestion. thanks, i'll try that!
Frank

ivogiev · Jul 12, 2009

guys,i read you do welds on your engines,but isn't the engine a magnesium unit?how you weld it to it?
i was warn by a mechanic that this metal cannot be welded,so i have to be very careful.

by the way,i have the same problem,cause when i got the bike the thread was damaged,so i am now using bigger bolt without magnet.
i will check if they sell magnet bolts with that size,so i can straight use it in there.

Faust · Jul 12, 2009

There is no point in using a magnet in the main oil drain bolt that holds oil screen because there is already filter on it(if the magnet is to be placed in the filter core).Moreover you have the risk of covering the filter with shavings which results in resistance to oil flow.You can weld a lever on magnetic drain plug to remove it.

Faust · Jul 12, 2009

ivogiev said:
guys,i read you do welds on your engines,but isn't the engine a magnesium unit?how you weld it to it?
i was warn by a mechanic that this metal cannot be welded,so i have to be very careful.

by the way,i have the same problem,cause when i got the bike the thread was damaged,so i am now using bigger bolt without magnet.
i will check if they sell magnet bolts with that size,so i can straight use it in there.

1-if there is any magnesium around it is only the cylinder head,stator cover or clutch cover in all engines.
2-he said he welded the magnet to the drain plug.please read carefully

re-fabricated magnetic oil drain bolt/welding it inside main

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