The tubes on the O-200 mount are all 5/8 x .058" 4130. With the exception of the 4 tubes with washers welded to them that butt up against the firewall for the firewall through bolts and the 4 tubes with washers welded to them that engine mounting bolts pass through. Each of those 8 tubes are 5/8 x .110" with an AN970-6 washer welded to it, then have a 3/8" bolt pass through for bolting the mount to the firewall and the engine to the mount.
I would think a VW would probably be OK on lighter tubing, so would probably go with the 5/8 x .049" 4130 for all of the bracing. -Jeff Scott Los Alamos, NM > Cc: "dean choitz" <ddchoitz at gmail.com> > Subject: KR> Motor mount > > What kind of steel what size and how thick are most engine mounts made out > of I'm planning on using a Volkswagen and move it to the head about 3 to 4 > inches
