27-02-2020, 06:49 PM
This has been a most enlightening day; thank you all so much for taking the trouble to pass on your thoughts and experiences. I now feel in possession of enough knowledge to press ahead and sort the problem. Obviously, I have got to completely strip everything down, make some measurements and go from there.
You might be interested to know that I can now see that someone has already taken an angle grinder to the crank to make it clear the front lip repair plate. It wasn't obvious at first but now I know what to look for and where to look! Balancing is therefore a must.
Also, for some reason, No.1 rod had been installed the wrong way round from all the others with the little end bolt head facing the nearside of the engine along with the split in the piston skirt. I reversed the rod to see what would happen and was pleased to find that it had moved the little end probably a 1/16" away from the gudgeon pin boss. So that is an encouraging result and only requires me now to reverse the piston on the rod.
Should I make any further unexpected discoveries, please bear with me if I raise them.
In the meantime, thank you all again,
John.
You might be interested to know that I can now see that someone has already taken an angle grinder to the crank to make it clear the front lip repair plate. It wasn't obvious at first but now I know what to look for and where to look! Balancing is therefore a must.
Also, for some reason, No.1 rod had been installed the wrong way round from all the others with the little end bolt head facing the nearside of the engine along with the split in the piston skirt. I reversed the rod to see what would happen and was pleased to find that it had moved the little end probably a 1/16" away from the gudgeon pin boss. So that is an encouraging result and only requires me now to reverse the piston on the rod.
Should I make any further unexpected discoveries, please bear with me if I raise them.
In the meantime, thank you all again,
John.