Advisibility of 'fettling' new cast pistons
Posted: May 30th, 2017, 2:36 pm
I'm in the early stages of renovating/rebuilding the engine in my 2 litre Lancia Beta Spider. The engine will be almost entirely for road use, and will have ported and 3 angle valve seat cylinder head, twin DCOE 45s with 36mm chokes, Vick Auto cast 10:1 (allegedly) pistons, standard cams (thanks Guy!), GC Cunningham rods, GC balanced and modified crankshaft and lightened and balanced Volumex (280mm) flywheel.
The question I want to ask is this; is there any advantage or point in me cleaning up the casting marks, sharp edges and general excess material on my new cast pistons or would this be unnecessary, unwise or just simply not worth the bother? I was thinking that I could save a few grams of mass and at the same time balance the pistons to each other and/or the rods they will be paired with. Is this worthwhile doing or not? And if it is worth doing, what areas of the piston should I concentrate on for material removal and what areas should I avoid?
It goes without saying that I will not be touching any of the bearing surfaces, of course.
Thanks in advance.
The question I want to ask is this; is there any advantage or point in me cleaning up the casting marks, sharp edges and general excess material on my new cast pistons or would this be unnecessary, unwise or just simply not worth the bother? I was thinking that I could save a few grams of mass and at the same time balance the pistons to each other and/or the rods they will be paired with. Is this worthwhile doing or not? And if it is worth doing, what areas of the piston should I concentrate on for material removal and what areas should I avoid?
It goes without saying that I will not be touching any of the bearing surfaces, of course.
Thanks in advance.