These ruggedly durable
pistons are made with
exclusive high strength FM425
alloy, and enhanced with
16.5% silicon for excellent
tensile strength and scuff
resistance. This advanced
metallurgy permits tighter
bore clearances, which help
minimise noise on cold engine
start-up. These pistons are
the ideal choice for street
performance applications and
late-model replacement.
More Sealed Power
hypereutectics benefits:
- Higher
strength than cast or forged
at operating temperature
- Finely dispersed silicon
particles provide a highly
resistant wear surface and
reduces scuffing
-
Lower material growth allows
pistons to be fit tighter,
improving cylinder sealing
for less blow-by and more
power
- High silicon
content allows elimination of
groove inserts in certain
applications
- Designed
to retain standard ring gaps
in the top groove
Piston Specifications
:
- CID:
347
- Bore: 4.030
- Stroke: 3.400
- Rod
Length: 5.400
-
Compression Height: 1.090
- Compression Ratio with
58cc chamber volume: 10.47
- Compression Ratio
with 60cc chamber volume:
10.20
- Compression
Ratio with 63cc chamber
volume: 9.90
- Dome
Volume: -5.0cc
- Pin
Type: Press or Floater with
tapered pin
-
Recommended Ring Set: Moly -
N/A, STD Fit - SPR9968 030,
File Fit - SPR9342 035
- CNC machined,
lightweight, coated skirt