RPM Machine Twitter
RPM Machine Facebook
Home
A
Air Filters & Systems
B
Balancers & Dampers
Bearings
Blocks & Accessories
Blowers
Bolt Kits
C
Camshafts
Carburetors & more
Clutch Parts & Bearings
Connecting Rods
Crankshafts
Cylinder Heads
Cylinder Sleeves
D
Distributors, etc.
Dress Up
E
Engine Complete
Engine Rebuild Kits
Exhaust Manifolds
Exhaust Systems
F
Fasteners
Flywheels & Flexplates
Freezeplugs
Fuel System
Accessories
G
Gaskets
Gear Drives
GM Performance Parts
Guide Plates
H
Harmonic Balancer
Head Bolts & Kits
Head Studs
Heat Protection Products
Headers
I
Ignition Systems
Ignition Wires
Imports Section
Intakes
L
Lifters
M
Main Bolts
Main Caps &
Girdles
Machining
Marine-
Perf. Products
N
Nitrous Systems
O
Oil Pans & more
Oil Pumps, etc.
P
Pistons
Piston Pins & Spiro Locks
Pulleys
Pushrods & Accessories
R
Rear End Parts
Rev Kits
Rocker Arms & more
Roller Rockers, etc.
Rotating
Assemblies
S
Services &
Machining
Shifters
Starters &
Accessories
Stud Girdles
Stroker Kits
T
Timing Sets & more
Tools
Transmissions
V
Valves
Valve Covers, etc.
Valve Springs
Valvetrain
Components
W
Water Pumps &
Components
Windage Trays
Wires

RPM Machine will Meet or Beat any price advertised on
Keith Black or Icon Pistons!

Icon Forged Pistons

Keith Black Pistons  are the most widely known pistons today in the hyperutectic pistons world. with a complete line up of performance as well as oem replacment components they are a great pistons option for the street rod build

Keith Black pistons are offered for a broad line of applications. Specializing in pump gas compression ratio pistons for street rods.

Top Ring End Gap Instructions

KB Piston with a recessed head
flat top KB Piston

Silvolite is the parent company for the Keith Black line. The line started with the Hypereutectic series of pistons and grew to include the whole line of claimer series pistons, the standard forged pistons series and the premium forged pistons series. In 2010 Silvolite decided to separate the forged pistons from the hypereutectic pistons and introduced the new name as Icon Forged Pistons, This new name incorporates all of the forged pistons made previously by Silvolite under the KB name.

Icon - Premium Forged Series Pistons This is the top of the line pistons from Icon/Silvolite offered. Includes all of the oem replacement forged pistons as well as the whole stroker kit line up of pistons offered from the original Kb Pistons line.
Icon - Forged Series Pistons This line of pistons is the most popular combinations purchased in the premium line just made on more of a mass production basis. These pistons are more economically bases for this reason.
Claimer Series This line of pistons were designed to be cheap yet effective for engine builders competing in the claimer series stock car classes. They are better than regular Hypereutectic pistons that includes a coated skirt as well.
Keith Black Pistons - Hypereutectic Series These pistons are the most economically based pistons in the line! They cover a very broad line up of oem replacement pistons as well as all of the popular hot rod and stroker engine combinations today. They are probably the best bang for the buck out there when it comes down to building a great dependable street rod.

KB is offering performance which is not just limited to the road. Right out of the box, KB supplies diamond machined pistons that feature a light weight design and are held to plus or minus one gram within the set. In addition, KB holds skirt sizes of less than one half thousandths (.0005") tolerance from piston to piston.

KB pistons are made of high-strength, T6 heat-treated, 390 hypereutectic aluminum alloy. This alloy yields better thermal efficiency with less expansion and superior wear characteristics. The KB design, combined with the hypereutectic alloy, can be run with less than .001" piston-to-wall clearance with no scoring; the tightest clearances in the industry. In addition, the thermal efficiency of the 390 alloy allows engine timing to be reduced, and the tight clearances virtually eliminates piston noise. All of these features combine to give you an engine that runs quiet, efficient, and longer than previously possible.


check markFully machined crowns and valve relief's
check markDrilled oil drain backs
check markFull floating wrist pins
check markTriple wound spiral locks
check markOver 190 different oversize part numbers
check markReflective alloy allows 2% power increase
check markApplications available with 5/64th and 1/16th ring packs.
check markVast assortment of compression ratios available in dish flat top and dome styles
check markQuench dome technology minimizes deterioration
check markZero deck quench designs
check markLightweight wrist pins available in most applications
check markAll part numbers available in kits with rings

United Engine relocated to Carson City, Nevada in 1978, where it has continued to grow. Since it's move, United Engine has continued to look at it's role in the domestic and world market. Currently, UEM manufactures the Silvolite OE aftermarket piston line, KB Performance Pistons (including the motorcycle division), and The Claimer Performance Piston Series. United Engine and Machine Company is now enjoying more than 80 years in business.

When you examine a piston you rarely examine the bottom of the ring groove. Even if you looked at the grooves of the same style pistons, seeing a difference without a micrometer would be difficult. From manufacturer to manufacturer, however, there can be differences in what is called the root groove diameter. The main difference is in what is called compensated ring grooves. What is compensated ring groove? Basically the root groove diameter is moved with the oversize. For years manufacturers would supply the STD root groove diameter for all oversize's. A .060 oversize piston would have the STD root groove diameter. A compensated ring groove means the root groove diameter would move with the oversize. A .060 oversize piston has the root groove moved out .060. In addition, the ring manufacturers compensate each oversize to match the piston, so there is no need to worry about matching rings and pistons.By compensating the ring grooves it cuts down the space between the back of the groove and the ring. This cuts down on un-burnt fuel stored in this area. In addition, compensated ring grooves make the land stronger, help rings to seat sooner, and allow the top rim of the piston to run cooler. All KB pistons are supplied with compensated ring grooves.

Special Installation procedures must be followed with the Keith Black Piston Line.
The KB pistons' unique thermal conductivity, ring location, and varied end use requires special attention be paid to top ring gap. KB pistons make more horsepower by reflecting heat energy back into the combustion process and, as a result, the top ring runs hotter and requires additional end clearance. Increasing ring end gap does not affect performance or oil control because normal end gaps are realized at operating temperatures. Failure to provide sufficient top ring end gap will cause a portion of the top ring land to break as the ring ends butt and lock tight in the cylinder. The broken piece may cause further piston or engine damage. Safe top ring end gaps can be found by multiplying the bore diameter by the appropriate ring end gap factor from the adjoining chart. Example: 3.5" bore "Street Normally Aspirated" = 3.5" x .0065 = .023" top ring end gap. NOTE: Second ring end gaps do not need extra clearance. As a general rule, retarding spark timing 2 to 4 degrees makes the best horsepower when KB pistons are used. Excessive spark advance, lean fuel mixture, or too much compression for the fuel and cam used will make heat sufficient to butt piston rings with as much as .060" ring end gap. Nitrous engines need a spark retard.

 APPLICATION
RING END GAP FACTOR
PISTON-TO-WALL CLEARANCE
STREET NORMALLY ASPIRATED
.0065"
.00075" - .0015"
STREET NITROUS OR SUPERCHARGED
.0080"
.0015" - .0025"
FLAT TRACK GASOLINE
.0080"
.0010" - .0030"
FLAT TRACK ALCOHOL 
.0060"
.0010" - .0030"
DRAG GASOLINE
.0075"
.0010" - .0030"
DRAG ALCOHOL
.0065"
.0010" - .0030"
DRAG SUPERCHARGED OR NITROUS GAS
.0095"
.0015" - .0030"
DRAG SUPERCHARGED ALCOHOL
.0085"
.0010" - .0030"
DRAG SUPERCHARGED FUEL 
.0115"
.0020" - .0040"

We have a complete line of racing pistons and rings for import and more from wiseco,probe,srp,trw,venolia,mahle,ross, speed pro, silvolite and keith black.

Check out or 347 Ford Stroker Site for a quick view of the Keith Black Pistons offered for the 347

Keith Black Pistons Hypereutectic Series from RPM Machine Click Here

Call 1-877-354-3812
to order your Parts Today!

Contact us Via Email

About RPM Machine | Specials | Newsletter
RPM Machine-Performance Auto Parts
PO Box 281
Cedar Valley, Utah 84013
We carry parts from scat, je, wiseco, ross, crower, callies, eagle, cat, eagle
Most of our rotating assemblies include forged pistons
and 4340 steelcranks

Copyright © 2011 RPM Machine | Policies | Contact Us