One solution to the problem of fixing the steel liner to the
aluminum housing could be to braze it using Al solder 500,this is an
alloy using a flux that will braze aluminum to itself or to ferrous
or non ferrous metals

http://www.harrisproductsgroup.com/en/Products/Alloys/Soldering/Lead-Free-Solders/Al-Solder-500.aspx


 The brazing rods would need to be ground to a fine powder and then
mixed with the flux to form a brazing paste, this then being applied
to the housing or liner before assembly, some experimentation on test
pieces would also be useful in determining the amount of brazing
powder to flux ratio required to form a sound joint. Then put the
assembly in an oven and heat to 482F allow to cool. If the liner has
enough spring in it to fit into the housing by itself  it may not
require any further pressure to push out the flux.


Andrew Campbell.

That is a good idea.  482 F might be a little on the low side. Is
there anything
out there that might be higher temperature?

If the .125 liner is pressed in the side housings will hold it in place.

Paul Lamar

Hello Paul,

the path / track on the side housings of the OMC engine could be plasma
nitrided - a process with N2 + heat or something like that ...

Perhaps you can get in contact with Otto Scharft, Andrew F. Burke or Mike
Griffith. They are listed / named at Freedom Motors as consultants + were
related to the OMC R+D ...

With kindest regards

Frank Herfert


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