KB107 vs Speedpro pistons
The Keith Black #KB-107 is a Good Piston.
Hypereutectic 'Heat-Treated'
Most come thru with 'coated skirts', and you can run slightly tighter tolerances.
But, you really don't need to use 'coated skirts' with this Piston, as it wears well with the material.
Compression Height at 1.675" {10.2-1 Compression-Ratio, w/68 CC Combustion Chamber Cylinder Heads}
Weight is good {Piston = 502 Grams} and {Piston-Pin = 132 Grams}
And fairly priced at $260 to $280.
'Durable Slugs', and real good units for the Daily Driver with an occasional 'blast-down-the-strip'.
Never had a problem with them in customer engine rebuilds.
The Keith Black #KB-107 is a Good Piston.
Hypereutectic 'Heat-Treated'
Most come thru with 'coated skirts', and you can run slightly tighter tolerances.
But, you really don't need to use 'coated skirts' with this Piston, as it wears well with the material.
Compression Height at 1.675" {10.2-1 Compression-Ratio, w/68 CC Combustion Chamber Cylinder Heads}
Weight is good {Piston = 502 Grams} and {Piston-Pin = 132 Grams}
And fairly priced at $260 to $280.
'Durable Slugs', and real good units for the Daily Driver with an occasional 'blast-down-the-strip'.
Never had a problem with them in customer engine rebuilds.