• Traum 90mm Forged Pistons for J series Engine
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Traum 90mm Forged Pistons for J series Engine

Traum 90mm Forged Pistons for J series Engine

$1,377.00
$1,377.00
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Quantity in Stock 10
Product Code 90mm-8cc
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Traum Forged Piston set with moly coated skirts for J series Engines. Includes Pistons, Rings, Wrist Pins, & Clips.

90mm is the standard size piston for all J37 blocks and is a +1mm for J32 and J35 blocks.

Here is the estimated compression ratio based on matching Crankshaft & Rods.

Dish Top
J32 Crank & Rods = 9.0
J35 Crank & Rods = 9.65
J37 Crank & Rods = 10.05

Flat Top
J32 Crank & Rods = 9.7
J35 Crank & Rods = 10.4
J37 Crank & Rods = 10.75

Dome Top
J32 Crank & Rods = 10.6
J35 Crank & Rods = 11.55
J37 Crank & Rods = 11.8

Tall Dome Top
J32 Crank & Rods = 11.3
J35 Crank & Rods = 12.2
J37 Crank & Rods = 12.5

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