Managed to get some scales today and weigh the Northwoods piston against a stock Mahle. Though the new piston looks to be a slightly thicker, beefier casting it weighs 81.1 grams with wristpin, circlips and ring. The stock Mahle weighs 79.2 grams set up with its wristpin, circlips and ring. For a difference of 1.9 grams. What I was looking for/at was how much extra this piston setup would weigh fitted with the 52/52E thrust washers as opposed the the stock 49sp piston but also the stock 52/52E piston completely set up as well. Balance is not that big a deal with small, single cyl, 2 cycle engines it seems. The crankshaft is the exact same for both the 49 and 52 motors but a stock 52/52E piston weighs 90.3 grams complete with 2 rings, wristpin, circlips and thrust washers. The difference is 11.1 grams between the two stock versions. The thrust washers weigh 5.6 grams for the pair and when added to the Northwoods piston it comes in at 86.6 grams. Just a bit more than halfway between the two pistons used on this crankshaft....this is looking good so far....just going to need a little extra work to get a decent running clearance between the bosses and the con rod...
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