Pelican Parts Forums - crank case cleaning

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I had a bad experience with Permatex gasket remover on a magnesium case. If you use it on a magnesium part, be sure to wash it off with solvent after a few minutes. I think that the active ingredient in the gasket remover is methylene chloride. I'm no chemist, but it sounds like the chlorine and the magnesium may have a problem getting along with each other. Whatever the chemistry may be, the result was a nasty corroded sealing face for one chain housing.

Quote:

Originally posted by bbh03

For the nooks and crannies, I have steel brushes from my dremmel. Any reason not to use these too?

Thanks!

Brian

I used these once on another project, and found that the bristles easily fell off after a short while. I would avoid using it...

-Wayne

ScotchBrite and Dremel Wire Wheels

So far my experience - on my aluminum case - is that both Scotchbrite and Dremel Wire Wheels (Stainless Steel) both do a very good job.
The scotchbrite does a real fine job on flat and reachable surfaces and the dremel wire wheels can reach the rest.
Dremel Buffs: # 511 actually work best of all - in the brown (aluminum oxide) grit - but they do wear quite quickly.

Whether it's Scotchbrite (green or red), Dremel buffs, or dremel or hand brushes (stainless steel), they all leave some residue.

To me the scotchbrite are probably the most worrisome - that green powder is everywhere - and it's still abrasive.

I've had the machine shop do a really thorough washing job - they ran it thru the washer 6 or 7 times, and thoroughly cleaned the squirters.

THEN, i've done the detail cleaning with the scotchbrite and the rest of the stuff, as well as using Snap-on 're-threaders' (not taps) to clean the tapped stud holes.

So - question: what's the absolute best and easiest way to reclean the entire case of all the detritus?
I'm thinking spraying with simple green and using the handy dandy Karcher power spray washer to blast it all clean, and follow with high pressure air throughout including a re-do on the oil squirter valves.

Any problems with that? Alternatives?

Thanks!
Jim

I WAS GOING TO TRY TAPING OFF THE INSIDES AND BLASTING WITH CRUSHED WALNUT. IS THIS A BAD IDEA? ANYONE HEARD OF BLASTING WITH DRY ICE? JOEL