| s/y Fiona - our Bruce Roberts Offshore 44' |
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Copyright (c) 2005-2023 Martin Erlandson, Sweden
December 2008-february 2009
Winter and Christmas. Cold - not good for painting so playing with engine is a good thing now.
Ok, engine back in the mounts and time to lift the iron-lid. For preservation purpose the former owner poored in oil inside the cylinders. Lycky I didn't try to start it with this amount of oil in piston hole... about 100ml oil. I maybe would be an to high compression or at least smokey...
I had my toughts about rusty cylinders but it seems like air doesn't flow in-out at all in an stopped engine. Prob you should not turn the engine around at all if you store an engine. Every turn will suck in new oxygen into cylinder and will feed Rusty...
Cylinders is like new! Here the piston head is cleaned from cole and no signs of scratches from any broken piston rings. New gasket fitted.
The heavy cylinder head was brought to workshop in basement, 50kg? The head joints where in perfect shape so now activities needed there. The valves where removed and some minor grinding where done just because it was possible ;-)
While there I ported the inlets - no just kidding - but there where simple improvments like removal of sharp edges but in and outlet.
Left is something new to me. The inletvalves is a type of not-rotating-valves with a flanging on the valve disc witch probably controls the air on it's way in to the cylinder. On the valve rod there is a flat area witch has a "key" in the head to prevent rotation.
This non-rotation is a bit harmful for life time of the valves and valve tappet. All four inlet valves where replaced. The exhaust valves where good. No valve seat where worn nor damaged. Great!
Left is a inlet, middle outlet tappet and inlet valve rod. There is huge differance just by not letting the valverod rotate.... Allright not worse the some grinding would fix it and there are plenty of material left in the tappet - alt least three grindings left ( = 60 years?)
There is specialtools for everything, this is mine for removing the valve split cotters. Cheap but still finger-and-eye safe.
Four new valves, eight newly grinded valves in a clean cylinder head. Time to carry the beast up the stairs to the boat and down to engine.
Pride....
