Simple and low tech (old school)
Split tank, remove studs, clean off old gasketn and sealant,
glue 2 sheets if 220 werr ir dry ti a vkat surface II use and old bathroom
medicine cabinet door mirror) apply lay out dire to mating surfaces of
tank halves, then rub away until all the dye is worn away leaving all
of mating surfaces bright and shiny.
Every so often flush the wet or dry with water to wash away grit
and metal particles. Takes a while if the tank is warped or surfaces are
pitted or uneven. After each half has lapped on a mirror of other the surfaces match so well thatn light can not be seen between them.
The amount of time and effort needed will vary depending upon the
condition of tank mating surfaces.
I may not do this tank right away so you might want to go to forum
Tools of the Trade article.
Considering their age a surprisingly large percentage of two piece cast aluminum tanks do not leak. For those that do leak a little time and effort will cure the problem.
Louis./
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