Originally Posted by ollyit
I've rebuilt that exact engine last summer ,happy to lend an ear
Thanks for the help guys.
To put it in a nutshell, the engine starts first, second time every time on the key, I'm assuming (perhaps wrongly ) that the engine running is fine, and that the fundamental issue is cooling.
A. Changed impeller, water pump housing and seals below the pump, gaskets also.
B. Inlet jacket off, inspected and put back together with new gaskets.
C. Exhaust manifold off, inspected, put back together with new gaskets.
D. Thermostat out, thermostat in, new thermostat and gaskets.
E. New spark plugs.
F. Fitted hose pipe onto water uptake and ran the engine, still overheating.
I've now got three stripped threads in the exhaust manifold which I'm in the process of repairing, gonna try to measure temperatures at various points with the engine running, but haven't done a compression test yet.
One thing I've not done is to fit an electric drill onto the driveshaft and put muffs on the water intake grills to simulate the engine running as I cant get my (three ) cordless drills to fit the socket I've taped to the top of the driveshaft.
Hope that explains where I'm at.
A despondent Cumbrian (Lancastrian really)!