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What's the best way to rinse out the engine!?

  • Thread starter Thread starter Fraphead
  • Start date Start date
F

Fraphead

Guest
I'm about to repair my stripped oil plug threads in the crankcase of my '79 GS425. The first time I've had a pro work on my bike was an oil change last month while on a weeklong ride, and the mechanic over-tourqed the pulg... sigh.

Anyway... I've got a Heli-Coil fix-it kit while I'll seal with some silicone gasket stuff that I used when sealing my crankcase together with. I should be able to tap out the new threads just fine, and was planning on using some Moly-grease to try to keep the aluminum shaving from getting into the crankcase (there is no oil pan on my bike... just the bottom of the crankcase) while tapping the larger hole with the new threads.

The question I have is... what would be something that I could dump into the engine and let it flow out the oil drain to try to flush out any aluminum shaving so I don't end up having any bits of metal swimming around inside of my engine? Something that would have to be okay on the wet clutch without mucking up the clutch plates. My brother was suggesting kerosine or diesel, but prefaced that opinion with "This is just a guess..."

I've got a new filter in the engine right now (I was changing the oil after all when this problem became apparent).

As always, thanks for the input... everyone on this site rocks at life!
 
If any swarf gets away from the hole I don't think you could rely on a flush to get it out, There is probably a layer of sludge in there and the flow rate on drain will be very slow near the surface.I wouldn't flush with anything other than motor oil.
I think the grease plug is a good way to go especially if you can fashion a tool that will go in there and sweep the grease out. Pipe cleaner with a 90 degree band and a curved sweep head for example. I would load up the drill flutes and the tap with LM grease, sweep the floor inside afterwards and do a quick oil change after that.
 
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