View Poll Results: A poll
dynamite
0
0%
hammer and chisel
0
0%
put more oil on it to make it solid black
0
0%
sell the engine, but don't show the muffler
0
0%
never buy another 4-stroke
0
0%
Voters: 6. You may not vote on this poll
How do you remove burnt oil from a 4-stroke muffler ?
]
01-09-2004, 01:10 PM
#2
Senior Member
RE: How do you remove burnt oil from a 4-stroke muffler ?
Have you tried just a soft brass wire brush? Most other cleaners will discolor the aluminum when used, but you could try carburator cteaner and the wire brush. May remove some more of the gunk. [&:]
01-09-2004, 01:11 PM
#3
RE: How do you remove burnt oil from a 4-stroke muffler ?
All of the above! I gave a few to my nephew-in-law and he glass bead blasted 'em for me. Also sand blasted some myself w/ fine sand @ low pressure. Then I ultra sonic cleaned 'em in alcohol to get the grit out. I think wire wheelin' them works good too, If you don't mind the finish it leaves on 'em...I had this blue liquid for cleaning jewlery that smelled like that home permanant stuff my sis used to use, that came w/ the sonic cleaner, but I can't find it anymore. That stuff would take anything off, inc. rust, but it would leave a gray dis-coloration on alum. parts.
01-09-2004, 01:16 PM
#4
Senior Member
My Feedback: (7)
Join Date: Oct 2003
Location: Round Rock,
TX
Posts: 2,024
Likes: 0
Received 0 Likes
on
0 Posts
RE: How do you remove burnt oil from a 4-stroke muffler ?
Can I ask what kind of fuel you used? Synth oil or castor based?
Some folks at our field say there is a new cleaner from Dawn called "Power Dissolver" that will dissolve this baked on oil when left on overnight. The cleaner is designed for the stove but is a simple Detergent based cleaner with a higher than normal lye amount (but doesn't seem to be enough to react with the aluminum). I have no personal experience with it let but the cleaner cost about $3.00 a bottle at Target.
Some folks at our field say there is a new cleaner from Dawn called "Power Dissolver" that will dissolve this baked on oil when left on overnight. The cleaner is designed for the stove but is a simple Detergent based cleaner with a higher than normal lye amount (but doesn't seem to be enough to react with the aluminum). I have no personal experience with it let but the cleaner cost about $3.00 a bottle at Target.
01-09-2004, 01:39 PM
#7
Senior Member
My Feedback: (13)
RE: How do you remove burnt oil from a 4-stroke muffler ?
Get some Low Odor Aircraft Stripper for aluminum. Auto Zone has it.
It is goopy. Best way I have found to use it is slop it on over all areas you wish to clean and let it sit for half an hour. I have an old saucepan for the part(s) to sit in. Then use a wire brush to scrub the gunk off.
Wear rubber kitchen gloves; this stuff is caustic.
.
It is goopy. Best way I have found to use it is slop it on over all areas you wish to clean and let it sit for half an hour. I have an old saucepan for the part(s) to sit in. Then use a wire brush to scrub the gunk off.
Wear rubber kitchen gloves; this stuff is caustic.
.
01-09-2004, 04:23 PM
#9
Senior Member
My Feedback: (3)
Join Date: Dec 2001
Location: San Francisco, CA
Posts: 1,147
Likes: 0
Received 0 Likes
on
0 Posts
RE: How do you remove burnt oil from a 4-stroke muffler ?
I think the best way to keep it to a minimum is to wipe off the muffler and header (if possible) after each flight and not use castor based fuels. Secondly periodically remove the muffler and header and soak in Chevron Perfect Engine Cleaner which seems to work well enough for me or you can try Demon Clean or Z Best but the key is to do this before the muffler and header get too gunked up. I know this seems lke a lot of work but just look at it like a regular maintenance item. Also consider using the "Yellow" teflon plumbers tape for sealing all joints in the exhaust system as keeping leaks to a minimum helps a great deal to reduce the baked on gunk problem.
