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Kits: Porting & Polishing
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Mounted Stones
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Black & White Stones

Black is 36 grit, very hard black silicon carbide for aggressive grinding on aluminum and other soft materials. White is 36 grit white aluminum oxide open grain for aggressive grinding on cast iron. 1/4" shanked.
STONE DISCOUNTS:
15% Discount on 25 of the same part #
Part# Dia. Length OAL Color
PS186B 1/2" 1" 5-1/2" Black
PS186W 1/2" 1" 5-1/2" White

Gray Porting Stones

Made of 60 grit aluminum oxide material for general purpose use on cast iron and steel. Use after carbide to remove and reshape ports and chambers before your final polish. Also to remove casting flash from blocks and exhaust manifolds. Can be shaped with dressing tools.
Part# Diameter Length Shank Dia. OAL
PS186 1/2" 3/4" 1/4" 4"
PS204 3/4" 3/4" 1/4" 4"
PS205 3/4" 1" 1/4" 4"
PS189 1/2" 2" 1/4" 3-1/2"
PS221 1" 1-1/2" 1/4" 3"

Ball Shaped Mounted Stones

Made of the same gray aluminum oxide material as our popular porting stones.
Part# Diameter Shank Dia. OAL
B121 1/2" 1/4" 2"
B122 3/8" 1/4" 2"
A26 5/8" 1/4" 2"
A40 3/4" 1/4" 4"
A25 1" 1/4" 4"

Porting Stone Kit

Sample kit of our most popular porting stones for both cast iron and aluminum. Contains 1 each of PS186, PS204, PS205, PS205X and a 2" dressing stick.
Porting Stone Kit Part# PSKIT

Ruby Porting Stones

This 36 grit stone is very aggressive on all types of material ferrous and non-ferrous. Made of ruby aluminum oxide material, these stones offer maximum grinding action. When using on aluminum, it is recommended that it be lubricated with Edge Lube Stick
Part# Diameter Length Shank Dia OAL
PS186X 1/2" 3/4" 1/4" 4-1/2"
PS186XL 1/2" 3/4" 1/4" 6"
PS205X 3/4" 1" 1/4" 4-1/2"
PS205XL 3/4" 1" 1/4" 6"

Miniature
Porting Stones

These miniature porting stones have a 1/8" shank and are available on 3" long shanks.
Part# Dia. Length OAL Shape Material
B104 5/16" 3/8" 3" Inverted White
B104X 5/16" 3/8" 2" Inverted Ruby
MPS112 3/8" 1/2" 3" Balloon Gray
MPS121 1/2" 1/2" 2" Ball Gray
MPS122 3/8" 3/8" 3" Ball Gray
MPS162 1/4" 3/8" 3" Gray
MPS163 1/4" 3/8" 3" Gray
MPS170 5/16" 1/2" 3" Gray
MPS176 3/8" 1/2" 3" Gray

Stone Dressers

Used to shape and dress porting stones and bench grinding wheels. A MUST! to shape porting stones and to keep the desired shape of the stone.
PS501 Hand Held Wheel Stone Dresser
PS6 1" x 1" x 6" Dressing Stick
916-638-1212