Overheating MD11C, how easy is to remove the exhaust manifold & start cleaning

I could be wrong and no doubt someone will be along shortly to correct me but I'm pretty sure marine thermostats open at different temperatures to automotive applications.

Have you got the outside diameter of the thermostat?
 
Big-Bang1 said:
I could be wrong and no doubt someone will be along shortly to correct me but I'm pretty sure marine thermostats open at different temperatures to automotive applications.

Have you got the outside diameter of the thermostat?
Click to expand...

You are right, the thermostat opens at 60 degrees C, however, some old cars are using same thermostat, i need to get the dimensions of my thermostat.
 
You won't get an equivalent thermostat at Halfords. The engine is raw water cooled and as such operates at a lower temperature than fresh water cooled engines.
The manual will tell you what temperature it opens at, I seem to remember it is around 62c.
A normal FW cooled engine will operate in the low 80's.
 
No pics I am afraid. Bought a very sad & redundant MDII flywheel centre (with V pulley). Cut off the pulley & brazed it onto the front of my own pulley (now you have an MDII with a dual pulley).

Bought a VW waterpump from a scrapyard, this had the impeller & housing that mated onto a flat steel plate, easily made by hand & cut & drilled to suit existing bolt locations on the engine - ensuring that the waterpump pulley aligned with the new V pulley in the flywheel. From the scrapyard, also bought a small cooling water headertank with pressurised cap, this came free with the waterpump.

Found a redundant & tired oilcooler, which was cleaned up. Plumbed them all together as per any other indirect cooling system &, hey presto it all worked & continued to do so for many years until the gearbox ate itself and a new engine fell off the back of a lorry.

Also spent some effort in chemically cleaning the existing water cooling system, & clearing out all the waterways that I could reach in the manifold & block - so we started out with relatively clear waterways.

I wish you luck, don't be daunted I am not an engineer & it proved to be a far from difficult task having overcome the nerves & made start.
 
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