Ford 4.1L X Flow Alloy Head Cast Pistons (250 X Flow)

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Engine:   4.1L X Flow Alloy Head OHV 12v (250 X Flow)
Capacity:   4097cc/250ci
Cylinders:   6
Bore Size:   93.47mm/3.68in
Stroke:   99.31mm/3.91in

 Piston Assembly Set
Part # 6MKRY9412 (includes pre-gapped Piston Rings)
Sizes available: 020,030,040
 Piston Information  Piston Ring Information
Piston Type Cast Pre­gapped Ring Set Part # M9124
Compression Height 29.7mm/1.169in Sizes Available: 020, 030, 040
Piston Crown Capacity 8.6cc File Back Ring Set Part # N/A
Dish Sizes Available: N/A
Bowl Depth -1.85mm/-0.073in Ring 1 Ring 2 Ring 3
Rod Length 3.27in/159.33mm Type

Barrel plain

Moly Coated

Reverse torsional taper face scraper Duraflex 3 piece oil ring
Compression Ratio at
Total Clearance Volume 		10.0:1 at 77cc Width 1.5mm/0.059in 1.5mm/0.059in 3mm/0.118in
Piston Crown Thickness 6.75mm Depth 3.43mm/0.135in 4.064mm/0.16in 3.607mm/0.121in
Piston Mass 368 grams (STD)



Pin Mass 115 grams
Pin Diameter 23.17mm/0.912in
Pin Locking Device
 Press Fit
Clearance Stamped on piston crown
Skirt Coated No

 
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