Hello, Thank you Hamish on all counts, as you would know now for the fine tuning! regards, Michael.

I have and it is. 

Evening. I'm pretty sure all MkIV engines have the larger crank pulley, to go with their larger journals. Egret has a mk3 engine so smaller pulley, but it looks to me like he's got a later large water pump. My mk3 water pump is 4 and 1/8 inch OD or 105mm, as best I can measure it on the car. I think you've got the right combination of pulley sizes for the mkIV but am no expert. If you've tried various combinations of pumps and pump housings it seems more likely to be blocked passages somewhere, rather than the pump. Going back to your other original question, EP Services in Wolverhampton rebuilt two pumps for me: one was an old removable-pulley type and the other was a newer non-serviceable one. Random thought: your exhaust manifold or downpipe joint isn't blowing is it? That wouldn't help temperature. Sounds like a long standing problem so probably not

Happy birthday John! Sounds like you marked it in style

Was more than a man of his time. Read Kim. You will see that he really knew and loved India and considered the people his equal. And it's a great story. Pooh is a worthy 'second album' to the Just So Stories. A fine choice Sir! And Happy Birthday John

Crazy isn’t it how cars have grown.  looks like you should need one for each foot. 

Owner of the nearish garage has it on display in his showroom, it's RHD as well. 

Oh yeah…. Man of his time, so probably he was by today’s definition…. FWIW. Pretty much irrelevant to the Just So stories though.

And another! Sensational reports yesterday from Grundavik in Iceland of new eruptions, described here with local knowledge and expertise, with drone footage of the new cracks of doom:  

Saw a nice mk3 today, GTs are rare over here.