The 'proper' 1098 engine is now safely installed in SHY.... and runs beautifully.... eventually !
No matter what battery I put on, the car is a pig to turn over when she's cold.
Even with an enormous battery off my Toyota Hilux (which has two) AND jump leads from the Toyota, the starter motor turns 2 or 3 times really slowly, the engine catches and everything stops. Then its 'click' 'click', so I rock the engine in second gear and try again.... same result. Usually by the 3rd or 4th time she'll fire up and run really well.
If you stop then try and re-start within 1/2 and hour all is well but if she cools down too much you're back to square one

Have I left an earth off ? Is something not connected properly ?