Holden 3.8 Buick Ecotec Cast Pistons

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Engine:   3.8 Buick OHV 12v
Capacity:   3791cc
Cylinders:   V6
Bore Size:   96.52mm/3.8in
Stroke:   86.4mm/3.4in

 Piston Assembly Set
Part # 6MKRY9381S
Sizes available: STD, 020, 040
 Piston Information  Piston Ring Information
Piston Type Cast Pre­gapped Ring Set Part # M1947
Compression Height 27.6mm/1.087in Sizes Available: STD, 020, 040
Piston Crown Capacity 2.6cc File Back Ring Set Part # N/A
Dish Sizes Available: N/A
Bowl Depth -0.5mm/-0.020in Ring 1 Ring 2 Ring 3
Rod Length Type

Barrel plain

Steel Nitrided

Reverse torsional taper face scraper Duraflex 3 piece oil ring
Compression Ratio at
Total Clearance Volume 		10:1 Width 1.2mm/0.047in 1.5mm/0.059in 2mm/0.078in
Piston Crown Thickness Depth 3.683mm/0.145in 3.937mm/0.155in 3.65mm/0.143in
Piston Mass 382 grams (0.50 O/S)



Pin Mass 108 grams
Pin Diameter 22.0mm/0.866in
Pin Locking Device
 Round Wire
Clearance Stamped on piston crown
Skirt Coated Yes

 
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