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KN-Series
Engines for 1936-47 Big Twins |
The KN-Series engines are very close in appearance to a
stock knucklehead engine, but offer a number of modern
features for more power, better engine life, and improved
reliability. Aside from the much larger 93” displacement,
the main improvement in design is the 1958-65 style
flywheel assembly, which uses a splined sprocket shaft and
Timken® sprocket shaft bearing. Although this necessitates
the use of a 1955-64 style inner tin primary cover and
primary chain sprocket, the increased flywheel stability,
strength, and power handling capacity are worth a slight
departure from stock. Flathead Power rocker arm cover “tins”
are another modern improvement. The lower covers are
actually made of die-cast aluminum, and instead of being
held in place by the valve guide, they are held down by
valve spring pressure. A special gasket and o-ring seal on
the bottom of the lower “tin” provides a positive seal, and
is much easier to service if needed, since the valve guides
do not have to be pressed out in order to remove the lower
covers. Also instead of the steel brazed-in hard oil
return lines used on |
 |
stock tins,
S&S has improved the design of the oil line for better
reliability and easier assembly and maintenance. The
initial KN93 offering is a standard compression 93” engine
with authentic generator style crankcases for early style
chassis, primary and transmissions engines with
alternator/generator style cases for use with 1970 and later
primary covers and late style transmissions For the fall of
2009, KN74 and KN103 engines are planned for both the purist
and the power monger. Flathead Power KN-Series
engines come completely assembled and ready to run with a
preset S&S Super Stock electronic ignition system and Super
E carburetor. KN-Series engines come with a 12 month
warranty. Please note that although we've incorporated
many modern technological improvements, those are fairly
faithful reproductions. with cast iron heads and
cylinders, they do get hot! They might even leak a little
oil-maybe. |
|
KN93 Engines |
| Style |
MSRP |
Part No. |
| Generator
Style |
$CALL |
106-2161 |
|
Alternator/Generator Style |
$CALL |
106-2560 |
|
|
S&S®
Complete Assembled SH93, SH93H, and SH103 Engines for 1966-84 Chassis
|
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Nothing But
The Best!
S&S SH-Series engines for shovelheads are based on the S&S
Sidewinder® big bore cylinders and stroker flywheels that we
have offered since 1976. Assembled with S&S
crankcases, valve train components, electronic ignition, and
S&S cylinder heads, these engines are topped off with great
looking S&S polished billet rocker boxes. Engines are
available with 1966-69 generator style crankcases, 1970-84
alternator style crankcases, or with custom alternator
left/generator right crankcases. Generator style engines
feature the S&S polished billet electronic timer loaded with
an S&S Super Stock® electronic ignition, and are now
available with a polished billet gearcover. The S&S billet
tappet guides, used on all SH-Series engines, are designed
around the quiet, dependable hydraulic tappets used in
1984-99 engines. The result is an engine for shovelheads
with the kind of quiet power that some folks may just have a
hard time believing.
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Alt/Gen
. . . The Best of Both Worlds!
S&S 93" alternator/generator engines have the perfect look
for that “Retro" chopper, but give you the option of using a
modern alternator charging system or a generator. If a
generator is not used on the engine, the generator location
is an excellent place to mount a spin-on oil filter; a
billet oil filter mount is included with
alternator/generator engines for this purpose. In addition,
the late style sprocket shaft and primary mounting surface
makes it compatible with 1970-‘99 primaries and 4, 5, and
6-speed transmissions. |
|
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S&S® SH-Series Engine Specifications |
| Engine |
Displacement |
Bore |
Stroke |
Carb |
Camshaft |
Piston Type |
Compression Ratio |
| SH93 |
93" |
3 5/8" |
4 1/2" |
Super E |
S&S 585 |
S&S Cast |
8.2:1 |
| SH93H |
93" |
3 5/8" |
4 1/2" |
Super E |
S&S 600 |
S&S Forged |
10:1 |
| SH103* |
103" |
3 5/8" |
5" |
Super G |
S&S 640 |
S&S Forged |
10.7:1 |
NOTE:
S&S® SH93H engine contains 1984-99 style S&S cam and tappets.
* SH103 will not fit stock chassis: not for everyone! |
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S&S®
P-Series Engines For 1948-99 Big Twin Chasis
|
Vintage Vibe...
Modern Muscle!
In the fall of 2007, S&S introduced an engine with a retro
look, but with updated technology. The panhead engine has
been hailed as the coolest looking classic engine of all
time, and the Flathead Power P-Series engines from S&S
capture that retro styling from the 50s and 60s, but with
21st century engineering. Keep in mind that as cool as
these motors look, they are not reproductions.
These engines were built to run! P-series engines are
available in four styles to fit 1948-99 style chassis. One
engine style is designed for 1954-‘64 style tin primary
applications. These 1955-64 style P-series engines can also
be installed in 1948-54 chassis if a 1955-64 style inner
tin primary cover is used. Another engine fits 1965-69
style chassis using the early alloy primary. Finally, for
retro custom applications, alternator and
alternator/generator versions are offered that will fit any
stock or custom 1970-99 style chassis. Match your
performance needs with a choice of displacements and
compression ratios: 93", 93" high compression, or the big
and bad 103" model. The P93H and P103 engines come standard
with dual plugged heads. While P93 and P93H engines will
nearly always fit in stock chassis, P103 engines are .300"
taller than stock and will not fit in stock frames without
modification.
|
 |
|
S&S® P-Series Engine Specifications |
| Engine |
Bore |
Stroke |
Displacement |
Camshaft |
Piston Type |
Compression Ratio |
| P93 |
3 5/8" |
4 1/2" |
93" |
S&S 585 |
S&S Cast |
8.2:1 |
| P93H |
3 5/8" |
4 1/2" |
93" |
S&S 600 |
S&S Forged |
10:1 |
| P103 |
3 5/8" |
5" |
103" |
S&S 640 |
S&S Forged |
10.7:1 |
|
| |
S&S P-Series Engine
-
Retro styling
with modern technology.
-
Heads – New
design based on S&S heads for shovels.
-
Uses S&S
roller rockers for shovel engines 1.500 ratio.
-
Uses readily
available S&S cylinders for shovels.
-
S&S hydraulic
valve train.
-
S&S Super
Stock® ignition and billet timer.
-
93", 93" high
compression, and 103" displacements.
-
1955-64,
1965-69, and custom alternator and alternator/generator styles.
|
|
|
|
Complete Carbureted S&S® P-Series Engines |
| Application |
Style |
Warranty |
P93 |
P93H |
P103H |
| Part No. |
MSRP |
Part No. |
MSRP |
Part No. |
MSRP |
| 1955-64 Chassis |
Generator |
Two Years |
106-0819 |
$CALL |
106-0822 |
$CALL |
106-0825 |
$CALL |
| 1965-69 Chassis |
Generator |
Two Years |
106-0820 |
$CALL |
106-0823 |
$CALL |
106-0826 |
$CALL |
| Custom 1970-99 |
Generator |
Two Years |
106-2685 |
$CALL |
106-2696 |
$CALL |
N/A |
- |
| Alternator/Generator |
Two Years |
106-0821 |
$CALL |
106-0824 |
$CALL |
106-0827 |
$CALL |
Notes :
- P93H and P103
engines come with dual plugged cylinder heads
- Alternator and
alternator/generator engines require
transmission with 1970-Up length main shaft and
custom exhaust
- 1955-64 style
engines may be installed in 1948-54 chassis if
1955-64 inner primary tin cover is used.
|
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S&S®
High Performance Carburetors
|
S&S
Super E ® G "Shorty" Carburetors
The S&S® Super E ® G Carbs were a ground breaking
development when they were first introduced in October of
1990. Since then, they have become the best selling
performance carburetor in the v-twin aftermarket, and have
remained so to this day. With over a half million Super
Shorty Carbs in the field, they have without a doubt become
the standard by which all performance carbs are judged.
|
|
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S&S® Super E ® G Carburetor Kits
The complete S&S Super E ® G carburetor
kits contain everything you need for a complete
installation. These kits include manifolds for engines with
stock length cylinders. Partial Super E and G
carburetor kits do not include manifolds and are designed
for the individual who purchases an S&S engine kit, which
includes a manifold, or owns a bike that is presently
equipped with a 1 7/8" S&S Super B carb and wishes to upgrade
to an S&S Super E. If you need a carb for a bike with
cylinders that are longer or shorter than stock, order the
carb kit without the manifold, and order the correct
manifold separately. Also listed are the part numbers
for Super E and Super G carbs only. |
 |
|
SELECTION CHART - S&S
SUPER E ® G CARBURETOR KITS |
| S&S®
Super E Carburetor kits |
S&S®
Super G
Carburetor kits |
|
Models |
Complete Kit
Manifold Included |
Partial Kit
Manifold Not Included |
Complete Kit
Manifold Included |
|
Standard Tanks |
Standard Tanks |
5 Gallon Tanks § |
Standard Tanks |
| Part No. |
MSRP |
Part No. |
MSRP |
Part No. |
MSRP |
Part No. |
MSRP |
| Big Twin
Models |
| 1955-'65* |
11-0401 |
$CALL |
11-0412 |
$CALL |
N/A |
- |
N/A |
- |
| 1966-'78 |
11-0402 |
$CALL |
11-0412 |
$CALL |
11-0418 |
$CALL |
11-0422 |
$CALL |
| 1979-'84 |
11-0411 |
$CALL |
11-0412 |
$CALL |
11-0418 |
$CALL |
11-0431 |
$CALL |
| 1984-'92 |
11-0407 |
$CALL |
11-0440 |
$CALL |
N/A |
- |
11-0427 |
$CALL |
| 1993-'99 |
11-0419 |
$CALL |
11-0442 |
$CALL |
N/A |
- |
11-0434 |
$CALL |
| 1999-'05 |
11-0450 |
$CALL |
N/A |
- |
N/A |
- |
11-0451 |
$CALL |
| 2006 |
106-0874 |
$CALL |
N/A |
- |
N/A |
- |
106-0875 |
$CALL |
|
Harley-Davidson® Sportster®
Models |
| 1957-'78 ‡ |
11-0404 |
$CALL |
N/A |
- |
N/A |
- |
11-0424 |
$CALL |
| 1979-'85 ‡ |
11-0406 |
$CALL |
N/A |
- |
N/A |
- |
11-0426 |
$CALL |
| 1986-'90 |
11-0408 |
$CALL |
11-0440 |
$CALL |
N/A |
- |
11-0428 |
$CALL |
| 1991-'03 |
11-0409 |
$CALL |
11-0443 |
$CALL |
N/A |
- |
11-0429 |
$CALL |
| 2004-'06 |
11-0470 |
$CALL |
N/A |
- |
N/A |
- |
N/A |
- |
| Buell |
| 1994-'03 |
11-0448 |
$CALL |
N/A |
- |
N/A |
- |
N/A |
- |
| Carb Only |
| All Year Groups |
11-0420 |
$CALL |
N/A |
- |
N/A |
- |
11-0421 |
$CALL |
*
Outside oil lines that feed heads on knucklehead and
1963-'65 panhead engines must be refabricated or use
a 1" spacer block for additional clearance.
‡ Does not fit engines equipped with vertical
magneto.
§ Shovelhead engines equipped with .075" longer than
stock cylinders in chassis with five gallon gas
tanks require additional air cleaner cover to gas
tank clearance.
Kits in this column include an air cleaner cover
clearanced to fit these engines.
† Some mounting hardware is not included with these
kits. Please see line drawings on page 74 in this
section for mounting brackets and breather hardware.
NOTE: 1979-'80 engines may be equipped with either
o-ring or band style heads. Check before ordering. |
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