Item Subject: Carbon on piston heads and other worries
Scott,
Wipe the cylinder wall above a piston dry. Oil around the piston lightly.
Rotate the cylinder to TDC. Pack heavy grease around the side of the piston.
Protect the adjacent areas from debris and clean off the carbon with whatever
method you prefer. Then just rotate the engine away from TDC and clean the
contaminated ring of grease off the cylinder wall. The oil on the side of the
piston makes the grease "release" easier so most of the carbon and grease stay
on the dry cylinder wall where it cleans off easily. Repeat for the other
cylinders. I've used this method several times with very good results.
Clay
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Subject: Carbon on piston heads and other worries
Author: Non-HP-owner-triumphs (owner-triumphs@triumph.cs.utah.edu) at
HP-Boise,unix2
Date: 10/31/95 9:32 PM
So I had to take the head off the TR-4 today,
<stuff deleted>
I'm guessing that you cant go cleaning off the pistons while they are still
installed? Getting some of that carbon down on the sides for the piston
rings to deal with would not be good I'm guessing. The sight of it bugs me
though. I cringe at putting the head back on top of that mess.
Then again maybe I am wrong.
Someone tell me what precautions to take in this area, I don't wanna mess up
my engine.
FYI the engine only has about 2500 miles on it since a TOTAL rebuild, the
carbon is due to a mixture problem that went unchecked for a while is my
guess.
Scott Tilton
sweating in Richmond Virginia
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