This might sound like a dumb question, but what ( if anything) do you use to support the end of the cylinder when it’s chucked in the lathe?I always put them in a lathe, skim and make 0.03 mm interference fit.
So far no problems.
The grinding has one big disadvantage: the head is not kept concentric to the muff, i.e. the liner rim is far to small to the head reces diameter
I stand to be corrected as I dont have a copy of Richardsons to hand But I think three thou was his recommendation, if so I am happy to join the management of Vincent factory Stevenage as being classed as an old fartOld farts in Vincenteering may know better but I cannot see a need for much more than one thou / 0.03 mm gap between head and cylinder liner flange. You just want a tad more load on the flange than on the large face of head. Get that gap much more and don´t be surprised about warped cylinderhead and muff. I prefer to have a wide contact head-muff sitting firmly bolted up , don´t think you get a better seal with three thou but only deformation in components.
Vic
Top- hat bushes with centres. The top hats are made to be a good fit in whatever bore size you are using. The tail stock in the lathe has a centre. The chuck is fitted with a centre and the kind of device that will drive it, like for grinding but is not able to impart any side loads. Then you can skim both the top and the bottom. The bottom is particularly important if low clearance pistons are to be used.
That will depend on the quality of the muff you are using, use a series D one and have fun.Old farts in Vincenteering may know better but I cannot see a need for much more than one thou / 0.03 mm gap between head and cylinder liner flange. You just want a tad more load on the flange than on the large face of head. Get that gap much more and don´t be surprised about warped cylinderhead and muff. I prefer to have a wide contact head-muff sitting firmly bolted up , don´t think you get a better seal with three thou but only deformation in components.
Vic
So long as the top of the crankcase is also square to the main bearings as well.Top- hat bushes with centres. The top hats are made to be a good fit in whatever bore size you are using. The tail stock in the lathe has a centre. The chuck is fitted with a centre and the kind of device that will drive it, like for grinding but is not able to impart any side loads. Then you can skim both the top and the bottom. The bottom is particularly important if low clearance pistons are to be used.