Description
Keith Black Hypereutectic pistons are a great choice for high performance marine, drag race, circle track, street or towing application builds. The low expansion 390 alloy with 16 percent silicon allows for a tighter piston to wall running clearance.
Fully machined head and valve reliefs
Triple Spiral Lock Rings
CNC machined pin bores produce straight and accurately sized bores
Accumulator Groove aids with compression ring seal
Machined in Oil Returns
Diamond Finished Skirts
Mini Grooves to reduce scuffing and overheating
Wrist pins and spiral lock included
1.5mm x 1.5mm x 4mm rings not included
Compression Ratio 56cc 9.7:1, 60cc 9.2:1, 62cc 9.0:1, 82cc 7.3:1 – With 0.00″ deck clearance and 0.040″ gasket
Advertised piston weight 365 grams, 99 gram wrist pin
OE Deck Height – SEE NOTES
Note: Standard bore size is 9mm or 3.622
Note: Centered Pin.
Note: Due to 3 block heights available, check deck clearance to determine compression ratio. 1) 8.930″ 89-95 22RE / + 0.012″ above deck. 2) 8.950″ 85-95 22R and 22RR / -0.008″ below deck. 3) 9.120″ 81-84 22R / -178″ below deck
