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Jun 09, 2014 3:50 pm
Jun 09, 2014 3:50 pm
Subject: Re: 4.5 litre engine problems and upgrades
I think that the whole of the layout of the 4.5 litre cooling system is incredibly inefficient. The engine was after all originally designed as a marine engine (3 litre) I believe.
Putting the cooling water in the side of the block (with equal sized holes - therefore the front one takes the easiest route straight up to the top) just makes things worse.
With the 3 litre Lagonda engine (originally designed for thermo syphon) all the cooling water goes in at the back of the head. I modified my M45 engine to work in this way and cured all the problems. With this mod the block just thermo syphons and all the cooilng water goes across the head just where it is all needed.
I would be interested to know if anyone else has tried this ?
I think that the whole of the layout of the 4.5 litre cooling system is incredibly inefficient. The engine was after all originally designed as a marine engine (3 litre) I believe.
Putting the cooling water in the side of the block (with equal sized holes - therefore the front one takes the easiest route straight up to the top) just makes things worse.
With the 3 litre Lagonda engine (originally designed for thermo syphon) all the cooling water goes in at the back of the head. I modified my M45 engine to work in this way and cured all the problems. With this mod the block just thermo syphons and all the cooilng water goes across the head just where it is all needed.
I would be interested to know if anyone else has tried this ?