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Traum Forged Piston set for J series Engines. Includes Pistons, Rings, Wrist Pins, & Clips.
89mm is the standard size piston for all J32 & J35 blocks.
Here is the estimated compression ratio based on matching Crankshaft & Rods. Dish Top J32 Crank & Rods = 9.2 J35 Crank & Rods = 9.85 J37 Crank & Rods = 10.15
Flat Top J32 Crank & Rods = 9.9 J35 Crank & Rods = 10.6 J37 Crank & Rods = 10.9
Dome Top J32 Crank & Rods = 10.8 J35 Crank & Rods = 11.75 J37 Crank & Rods = 12.1
Tall Dome Top J32 Crank & Rods = 11.5 J35 Crank & Rods = 12.4 J37 Crank & Rods = 12.75
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