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S&S Square Motor Chance of a Lifetime

Save a Grand on your next Performance Project

Wrench and the S&S Team
9/22/2010


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Don't Miss Out...Special Price Ends Soon!

The Bikernet Service Engineers caught sight of the following special S&S engine offer and we were immediately intrigued, primarily because of the square motor, short stroke configuration. Check it out and get a behind the scenes view of the S&S team building a V111 engine:
 
Washing crankcases.  Sometimes something as simple as warm soapy water is the best way to get something clean, and when an engine goes together it must be clean.
Washing crankcases. Sometimes something as simple as warm soapy water is the best way to get something clean, and when an engine goes together it must be clean.



The special promotion on the S V111 and T111 engines comes to a close at the end of September, so now's the time to get one on order. Take advantage of the special prices on V111 and T111 engines before it's too late.
 
Using a special fixture with an undersized sprocket shaft that allows the bearings to easily slide on and off, the engine builder mocks up the Timken® bearing assembly under load to check flywheel endplay. He then selects the correct bearing spacer to assure proper clearance
Using a special fixture with an undersized sprocket shaft that allows the bearings to easily slide on and off, the engine builder mocks up the Timken® bearing assembly under load to check flywheel endplay. He then selects the correct bearing spacer to assure proper clearance



Get your order in before October 1, 2010 and save up to $1145.00!If you're considering an engine replacement, or if you plan to build a custom bike, you can save some serious cash if you place an order for an S 111 cubic inch engine before the end of September 2010. It's Hip To Be Square! The 111's are "square" engines. That means that the bore and stroke are equal at 4-1/8" each. S&S has historically promoted longer stroke engines for greater performance, but these engines were designed as performance/touring power plants.
 
Flywheel assembly is placed on this assembly fixture to hold it steady for assembly of the drive side crankcase.
Flywheel assembly is placed on this assembly fixture to hold it steady for assembly of the drive side crankcase.



Touring engines are designed for more torque than horsepower, but with 111 cubic inches there is plenty of both. The relatively short 4-1/8" stroke of the S V111 engine keeps piston speed lower, at the same rpm than the 4-1/4" stroke of the stock 80 cubic inch Harley-Davidson® Evolution® engine, that it was designed to replace.
 
Lower piston speed contributes to engine longevity, reduced vibration, and less noise. The giant 4-1/8" bore produces the robust 111 cubic inch displacement. And as we all know, that there is no replacement for displacement!
 
The inner Timken bearing is pressed on to the sprocket shaft using a special S&S bearing installer tool.
The inner Timken bearing is pressed on to the sprocket shaft using a special S&S bearing installer tool.



The V111 is a great all around performance/touring engine for carbureted 1984-'99 Harley-Davidson® big twins and it's a great choice for custom bikes built with this popular chassis style. Available in natural or black wrinkle powder coat finish. Click on the S&S banners at top and bottom for more information.
 
The drive side crankcase installed over the inner Timken bearing.
The drive side crankcase installed over the inner Timken bearing.



The T111 fits 1999-'06 Harley-Davidson big twins except 2006 Dyna® models, and is available for carbureted and fuel injected motorcycles with your choice of silver or black wrinkle powder-coat finish.
 
You Snooze, You Lose!Don't delay because after 9-30-10 you're gonna pay more! See your local S&S dealer to get an S V111 or T111 for yourself. Check the prices at the end of the article
 
With the correct bearing spacer installed, the outer Timken bearing is pressed on with the same S&S bearing installer tool.
With the correct bearing spacer installed, the outer Timken bearing is pressed on with the same S&S bearing installer tool.



The “square motor” configuration is attractive from several perspectives.

First the relatively short stroke reduces piston speed at any given rpm compared to a longer stroke engine. The shorter stroke also allows the engine to rev higher without tearing itself apart. There are much less severe inertial loads in a shorter stroke engine due to the lower piston speed. If the connecting rod length is equal in both engines, the short stroke engine will have a smaller rod angle. That will result in less lateral loading of the piston during the power stroke. That reduces wear and makes the engine last longer.
 
Sealant is carefully applied to the mating surface of the cam side crankcase.  Too little and it may leak.  Too much and globs of sealant may get into the engine and plug oil passages.
Sealant is carefully applied to the mating surface of the cam side crankcase. Too little and it may leak. Too much and globs of sealant may get into the engine and plug oil passages.



The fact that the bore of a square engine is relatively large allows for a fairly high displacement. The more air and gas you can suck into the engine, the bigger the bang when you light it off! Also, with a larger area on the top of the piston, there will be more force exerted on the connecting rod at any give cylinder pressure than there will be with a smaller bore size. Look at it this way, pressure is expressed in pounds per square inch, and if you have more square inches, you get more pounds of force.
 
Cam side crankcase is installed and crankcase studs are tightened to the correct torque value.
Cam side crankcase is installed and crankcase studs are tightened to the correct torque value.



Let’s you do the math. A typical engine might have 500 psi of cylinder pressure under fairly normal operation. We’ll just use that number to show how it works. A stock Harley-Davidson Evolution engine has bore size of approximately 3.500 inches, so the piston dome area is 9.26 square inches. By multiplying pressure by area, 500 lb/in2 X 9.26, In2 = 4630 lb of force on the connecting rod for 3.500 bore. In a 4.000 bore engine like the V111, the piston dome area is 12.56 inches, or 500 pounds per square inch X or 12.56 square inches = 6280 lb of force. It’s more. It’s got to be better!
 
The billet S&S oil pump is installed in the crankcase.  The drive shaft is oiled to provide lubrication at start up.
The billet S&S oil pump is installed in the crankcase. The drive shaft is oiled to provide lubrication at start up.



It should be mentioned that a square motor needs good flowing cylinder heads to make power at higher rpm, but since the S&S V111 and T111 engines have S&S cylinder heads, life is good.
 
The S&S V111: V111 with Super Stock ignition has a two year warranty, and the V111 with IST has a three year warranty because of the knock sensor.
The S&S V111: V111 with Super Stock ignition has a two year warranty, and the V111 with IST has a three year warranty because of the knock sensor.



S&S V111 Engine

The new V111 engine is designed for torque more than top end horsepower. The short 41/8" stroke is equal to the large 41/8" bore, which minimizes vibration. The relatively low lift S&S 585 cam and the single coil Sidewinder® valve springs minimize valve train noise. A smooth, quiet, torquey engine is ideal for touring applications where vibration and noise can get old on a long ride, and a loaded bagger pulling a trailer can overtax a stock engine.
 
Oil pump bolts are tightened with a torque wrench.  Correct torque is very important to ensure the correct seal and to prevent warping the pump body or cover.
Oil pump bolts are tightened with a torque wrench. Correct torque is very important to ensure the correct seal and to prevent warping the pump body or cover.



Fitment

* 1984–’99 carbureted chassis
* Custom chassis designed for Evolution® engines
Cam lobes and gears get a shot of assembly lube to protect these critical components at start up until the engine oil can provide normal lubrication.
Cam lobes and gears get a shot of assembly lube to protect these critical components at start up until the engine oil can provide normal lubrication.



Features and Benefits

* Short stroke produces less vibration and longer engine life
* S&S 585 cam and lightweight single coil Sidewinder® valve springs reduce valve train noise
* S&S forged rocker arms
* Shorter than stock height engine makes installation easy
* Chrome plated rocker covers, tappet guides, and gearcover
Final check for cam end play.
Final check for cam end play.



Options

* Natural or wrinkle black powdercoat
Tappets and tappet guides are installed.  Bolts are tightened using a torque wrench.
Tappets and tappet guides are installed. Bolts are tightened using a torque wrench.



Carbureted Engines (1984-'99)

* S&S Super E carburetor with teardrop air cleaner

1: Intelligent Spark Technology (IST®) ignition system

* Knock sensing ignition control prolongs engine life by automatically adjusting timing to eliminate knock by learning and storing ignition requirements of the engine
* Guardian feature ensures proper engine break-in and protects engine with a 3 step break-in rev-limiter for first 24-hours of operation
* Logs engine data, diagnostic test codes and history items, which can be viewed via a PC when equipped with diagnostic cable and software part #55-5075
* Extended two-year warranty
A compression ring is placed in the cylinder bore to check ring end gap.  If the gap is too tight, the ring ends will be filed to adjust the end gap.
A compression ring is placed in the cylinder bore to check ring end gap. If the gap is too tight, the ring ends will be filed to adjust the end gap.



2: Super Stock® ignition system

* Protects engine with a 3-step break-in rev-limiter during first 24-hours of operation
* Logs engine data that can be viewed via a PC when equipped with diagnostic cable and software part #55-1271
* Initially configured for electric start, however, it is kick-start capable
* Two and three-year warranty
Final check for cam end play.
Final check for cam end play.



We reached out to Eric Bennett at Bennett's performance for his take on the deal. "This configuration has a shorter stroke than factory bikes for enhanced reliability," said Eric. "The same configuration ads balance to an engine. S&S makes a 4-by-4 Sportster engine that's fantastic. Shorter stroke motors rev quicker and can handle much higher rpms in a pushrod based motor. Plus the reduced piston speed will make 'em last."

The T111: All T111 carburated engines have the IST, so they have a three year warranty. Engines with IST get an extra year warranty because of the knock sensing feature.
The T111: All T111 carburated engines have the IST, so they have a three year warranty. Engines with IST get an extra year warranty because of the knock sensing feature.



The S&S T111

The new T111 is a powerful yet quiet engine perfect for touring riders. A practical stroke, less aggressive touring cam, and nearly silent valve train create a torquey, smooth power band – making your bike a pleasure to ride for long distances. Lower cost and superior engine life.

Piston wrings are installed on the piston using a ring installer tool.
Piston wrings are installed on the piston using a ring installer tool.



Fitment

The T111 will only fit in place of 1999-’05 fuel injected engines and 1999-’06 carbureted engines

S&S does not offer full replacement engines for 2006 Dyna® models, any 2007-up models, or any counterbalanced engines, such as Twin Cam 88B™. However, see our Power Kits starting on page 1-22 for power-enhancing modifications to these models.
After the piston is installed on the connecting rod, a band style ring compressor is used to install the cylinder over the piston rings.  Once the cylinder is down over the rings, the ring compressor is removed, allowing the cylinder to be pushed down into the crankcase.
After the piston is installed on the connecting rod, a band style ring compressor is used to install the cylinder over the piston rings. Once the cylinder is down over the rings, the ring compressor is removed, allowing the cylinder to be pushed down into the crankcase.



Features and Benefits

* Installs easily into stock frames
* “Square” motor configuration (equal bore and stroke) produces excellent torque, greatly increases engine life, and reduces mechanical engine noise
* S&S 585GP gear driven cams and lightweight single coil Sidewinder® valve springs further reduce valve train noise
* Silver powdercoat or wrinkle black powdercoat finish
* Chrome gearcover and tappet covers
* Trademark S&S teardrop air cleaner
Head bolts are torqued in a crossing pattern and in 4 stages to ensure that the heads are not warped by uneven pressure.  This is critical for head gasket sealing.
Head bolts are torqued in a crossing pattern and in 4 stages to ensure that the heads are not warped by uneven pressure. This is critical for head gasket sealing.



Fuel Injected Engines (2002-'05)

* Delphi® style S&S Variable Fuel Injection (VFI) module with built-in three stage engine overheat protection
* Closed loop fuel system, dual oxygen sensors provide air-fuel ratio feedback for correct fuel delivery under any condition
* Included S&S ProTune II software CD provides base fuel maps for most aftermarket exhaust systems
* Delphi style knock sensor module eliminates knock and prolongs engine life Break-in rev-limiter prevents high RPM during break-in
* Single bore throttle body with teardrop air cleaner
* Three-year warranty
Intake manifold is pre-assembled with seals and flanges for installation between the heads
Intake manifold is pre-assembled with seals and flanges for installation between the heads



Fuel Injected Engines (1999-'01)

* Single bore throttle body with teardrop air cleaner
* Magneti Marelli® style S&S Variable Fuel Injection (VFI) module with built-in three stage engine overheat protection
* Closed loop fuel system, dual oxygen sensors provide air-fuel ratio feedback for correct fuel delivery under any condition
* Included S&S ProTune II software provides base fuel maps for most aftermarket exhaust systems
* Two-year warranty
Breather hose from the front cylinder head is attached directly to the manifold.
Breather hose from the front cylinder head is attached directly to the manifold.



Carbureted Engines

* S&S Super E carburetor with teardrop air cleaner cover
* Knock sensing ignition control prolongs engine life by automatically adjusting timing to eliminate knock by learning and storing ignition requirements of the engine
* Guardian feature protects engine with a 3-step break-in rev-limiter
* Three-year warranty
After rocker boxes and rocker arms are installed, pushrods are adjusted
After rocker boxes and rocker arms are installed, pushrods are adjusted



Pushrod cover keepers are installed using a special tool.  If you installed as many keepers as these guys do, you'd own one of these tools too.
Pushrod cover keepers are installed using a special tool. If you installed as many keepers as these guys do, you'd own one of these tools too.



Every engine built by S&S has a build sheet that records just about anything you could want to know about the engine.  This includes serial numbers of major components, assembled clearances, and anything special.  Note that this engine was assembled with a black cam cover.
Every engine built by S&S has a build sheet that records just about anything you could want to know about the engine. This includes serial numbers of major components, assembled clearances, and anything special. Note that this engine was assembled with a black cam cover.



The finished product.  But wait! We're not done yet.
The finished product. But wait! We're not done yet.


Every engine assembled by S&S is run on this end of line testing machine.  Compression, oil pressure and a number of other critical values are verified, before the engine is packaged and shipped.
Every engine assembled by S&S is run on this end of line testing machine. Compression, oil pressure and a number of other critical values are verified, before the engine is packaged and shipped.


Where the rubber meets the road.
Where the rubber meets the road.




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Reader Comments


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I have a v 111 in a 1990 FXSTS AND LOVE IT

SKIP STARKEY
ADDSION, NY
Sunday, August 03, 2014
Editor Response I have a 93-inch S&S Shovelhead and it runs like a raped ape!
--Bandit
Will my Vance & Hines 2-to-1 pipes off my 96 in fit the S&S t111?

Gary Kamieniecki
Manning, AB, Canada
Tuesday, July 09, 2013
Editor Response The T111 engine is slightly shorter than the stock engine, but the pipes
can still be used. Needless to say we'd prefer to see Gary running our
Power Tune Duals, but wish in one hand eh? It may be necessary to change
the shims at the transmission mount.

--Bruce Tessmer
S&S(r) Cycle Inc.


--Bandit
I recently bought an American Ironhorse, Texas chopper. It has a 111ci (square motor) in it. Is there an easy way to tell whether I have the "T" or the "V" engine version. I'm wondering if it has the knock sensors and stuff.

Hunter Scarborough
Nacogdoches, TX
Thursday, May 12, 2011
Editor Response Drop me a line to Bandit@bikernet.com and I'll find out.
--Bandit
Excellent article: I put the 111 cu S@S in my 1992 FLCHTC. Wish I would have had it many years ago. Been riding for forty years.

Ed Smith
Cedar Rapids IA
Thursday, March 31, 2011
Editor Response Thanks. Send us a shot of your bike, if you get a chance.
--Bandit
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