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 An oil leak

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J1anno
Montanarolo
Montanarolo


Posts : 19
Join date : 2014-07-06
Age : 32

PostSubject: An oil leak   Sun Aug 24, 2014 4:37 am

I noticed that my 8v GRiSO has started to leak oil from the left side of the engine.
Oil seems to be coming from an allen screw:
Cleaned of the oil in this picture.
Is it safe to tighten/screw it in?

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Phang
Grignapoco
Grignapoco


Posts : 170
Join date : 2013-11-22
Age : 44

PostSubject: Re: An oil leak   Sun Aug 24, 2014 8:44 am

I think that's the set screw to plug the end of the oil gallery drilled in the crankcase for the piston cooling jets.

I would remove it carefully and coat it with some kind of thread sealant before I screw it back.

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J1anno
Montanarolo
Montanarolo


Posts : 19
Join date : 2014-07-06
Age : 32

PostSubject: Re: An oil leak   Sat Aug 30, 2014 2:10 pm

Its abit hard to believe, but after a closer look, it seems like there is a crack in the engine block affraid
How the hell could this happen and what to do with it?
Any ideas ?

Bike is from 2008, so warranty period is over. Would there be any point of showing this to MG dealer?

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Pete Roper
GRiSO
GRiSO


Posts : 3769
Join date : 2013-05-29
Age : 59

PostSubject: Re: An oil leak   Sat Aug 30, 2014 4:40 pm

I think you are worrying a bit too much. Back the plug out. Wash the area with contact cleaner and have a really good squizz at it. Put a drop of blue Loctite on the plug threads and re-insert it. See if it stops leaking. If it still leaks? Clean the area again with contact cleaner without removing the plug and put a blob of epoxy over it, let it cure, paint it black.

Pete
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J1anno
Montanarolo
Montanarolo


Posts : 19
Join date : 2014-07-06
Age : 32

PostSubject: Re: An oil leak   Sun Aug 31, 2014 2:41 am

I wish I were worrying to much...but after cleaning the area again with break cleaner, this black line of oil occurs after a minute or so...even with the engine off. Sad

top:
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Center:
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Bottom:
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After an hour of riding:
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Phang
Grignapoco
Grignapoco


Posts : 170
Join date : 2013-11-22
Age : 44

PostSubject: Re: An oil leak   Sun Aug 31, 2014 2:46 am

Ouch Shocked

That looks like a cracked crankcase
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Pete Roper
GRiSO
GRiSO


Posts : 3769
Join date : 2013-05-29
Age : 59

PostSubject: Re: An oil leak   Sun Aug 31, 2014 3:41 am

Later pics are clearer. OK, once again, wash it with degreaser and then contact cleaner. It has to be clean AND dry/oil free. Get some Loctite 'Super Wick-in' and dribble it along what looks like the flaw. Leave it a few hours and repeat. Then once more. Heat the area with a heat gun or blowtorch, don't overheat it, just get it warm. Allow to cool then apply epoxy over and around the flaw. Allow to set for a day or two. Take it for a good flog and see if its stopped it. If it has? Paint it.

Pete
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Phang
Grignapoco
Grignapoco


Posts : 170
Join date : 2013-11-22
Age : 44

PostSubject: Re: An oil leak   Sun Aug 31, 2014 4:24 am

I ever sealed a pin hole leak from the cylinder head of my other bike with threebond 1211 successfully.  Basically clean and degrease the area. Rub the sealant in with my finger and put a small blob right on the pin hole.

It stayed dry since then (3~4 years ago) even after numerous hot and cold cycles.
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PostSubject: Re: An oil leak   Today at 5:52 pm

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An oil leak
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