Is it worth 'fettling' new cast pistons prior to install?

[mangocrazy]

I'm slowly approaching the point where rebuild operations can occur on my 2 litre Spider engine, and I have a new set of (allegedly) 10:1 cast Vick-Auto pistons ready to be fitted to the recently rebored and honed block. I was wondering whether to fit the pistons 'as is' or whether it's worth using a Dremel and various abrasive wheels to remove any sharp edges, casting flash and areas where there is unnecessary extra material? At the same time I was thinking of ensuring that all pistons weighed the same down to 1/100th of a gram using a set of digital scales I have.

Is this worth doing, or is it unnecessary or even unwise? I'd only be removing material from non-bearing surfaces and would only be removing modest amounts of material.

[peteracs]

Hi

From what I have read, sharp edges in the combustion chamber leads to hot spots, so should be avoided.

If you are going to the bother of balancing the pistons then I would suggest also doing the con rods etc.

Peter

[WestonE]

Fit as is unless you have a valve to piston clearance issue in which case have the valve pockets machined after your dry build check.

Eric