5.9 stroker build
The Hughes stroker kit arrived earlier this week. To repeat, I bought the cast crank, forged Icon piston, with Scat I beam rods. The pistons are dished with asymmetrical cutouts for intake and exhaust valves. For sure I will be double and triple checking that I install them in the correct bore.
They're floating wrist pins, so for s&g's I mocked up a set.
This week I bought a small digital scale from HF. It can weigh up to 11 lbs/5000 grams. I weighed all the pistons, pins, and con rods. Five of the pistons weighed 487g, the other three weighed 488g. Pins were evenly split between 114 and 115g. The con rods had one weighing 575g, four weighing 576g, and three weighing 577g. If I hadn't measured and had randomly paired the lightest piston/pin assembly with the lightest rod, and vice versa paired the heaviest with the heaviest, the max variance was only 4g. Mixing and matching, I got six piston/rod assembly's to come in at 1,178g and two combos at 1,179. Better yet, each heavy is on the opposite cylinder bank. The effect on the rotating assembly is negligible, but it was a fun exercise.
Tomorrow the pistons and cam bearings go to the machinist.
The Hughes stroker kit arrived earlier this week. To repeat, I bought the cast crank, forged Icon piston, with Scat I beam rods. The pistons are dished with asymmetrical cutouts for intake and exhaust valves. For sure I will be double and triple checking that I install them in the correct bore.
They're floating wrist pins, so for s&g's I mocked up a set.
This week I bought a small digital scale from HF. It can weigh up to 11 lbs/5000 grams. I weighed all the pistons, pins, and con rods. Five of the pistons weighed 487g, the other three weighed 488g. Pins were evenly split between 114 and 115g. The con rods had one weighing 575g, four weighing 576g, and three weighing 577g. If I hadn't measured and had randomly paired the lightest piston/pin assembly with the lightest rod, and vice versa paired the heaviest with the heaviest, the max variance was only 4g. Mixing and matching, I got six piston/rod assembly's to come in at 1,178g and two combos at 1,179. Better yet, each heavy is on the opposite cylinder bank. The effect on the rotating assembly is negligible, but it was a fun exercise.
Tomorrow the pistons and cam bearings go to the machinist.