Ceramic Coatings and EGT

[Walter Sherwin]

>Mask the pistons from the compression ring down with masking tape and
>newspaper, and apply the techline to the piston top and above the
compression
>ring on the sides.  I used a windex bottle, but techline is fairly thick,
so
>take your time.  Once you have coated your pistons the way you like, cook
the
>pistons in the oven at a temperature indicated on the techline package (450
>deg I think) for 20-30 minutes, then let cool


Yup, the coatings you describe work very well,  BUT , be very careful with
both the baking temperature and the baking time.  Most piston alloys are
heat treated to some extent, and allowing your baking temperature and/or
baking time to wander off into uncharted territory will quickly wreck the
material characteristics of your new set of slugs.  A call to both the
piston vendor and the coating vendor might be warranted before starting.

Walt.