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Yet another 1/2 overheating MD11!
Yes, I know this is a recurring theme, but I've tried everything suggested in the archives and I'm still left with a strange problem so any ideas are welcome.
I have a 1976 MD11C raw water cooled in a Moody 30. Starts instantly every time, although does smoke a bit. Running for extended periods at low revs/load everything is fine with very strong water flow. Both heads remain at around 50 deg C (sorry, I'm a foreigner!), and #1 cyl is also fine and opening either drain **** results in a plentiful stream. As soon as I run over about 1300rpm under load, the #2 cyl overheats as if there's no water around the liner.
I've changed pump and all piping, new exhaust elbow and manifold gaskets. Drilled/filed (with round file in drill!) and acid soaked the manifold. Tested all channels with hose pipe and have free flow. Removed heads and drilled/filed all channels. Drilled/filed and acid soaked the cylinders in place, tested with hose from all five channels in top of cyl and have free flow. New head gaskets. New thermostat.
I even tried supplying the cooling water via a hose pipe - no gain.
Having seen so many knowledgable Volvo members I'm hoping someone has an idea.
HELP - I'm stuffed!