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- Jan 5, 2006
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I finally ran out of the lapping compound a friend gave me to lap in pistons and sleeves. Does anyone know what grit is used? The stuff I had was a yellow powder you mixed with 10 wt. oil.
I finally ran out of the lapping compound a friend gave me to lap in pistons and sleeves. Does anyone know what grit is used? The stuff I had was a yellow powder you mixed with 10 wt. oil.
If your toothpaste is 20 years old maybe, todays stuff dose'nt have the abrasives in it.For what it's worth, I used Toothpaste & WD 40
Tom
PS. Is this method still being used???
There is no valid reason to use any type of lapping compound to break in, or seat, because of out of roundness, a piston to a liner. An airplane propeller of the right size can easily do this & in the case of an outboard, a left hand propeller can be used.What do you recommend Jim?
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