Harley Twin-Cam

The Harley-Davidson Twin Cam motors is motorcycle machines made by Harley-Davidson since 1998.
The Twin Cam 88 was released when it comes to 1999 model 12 months in September 1998.
The Twin Cam at first wasn’t utilized in the Softail design household

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(1999-2005) * FXDX/FXDXI Dyna Super Glide Sport (1999-2005) * FXDC/FXDCI Dyna Super Glide Custom (2005) * FXDP Dyna Defender Police (2001-2004) Table of Contents: * QUICK REFERENCE DATA * GENERAL INFORMATION Manual organization / Warnings cautions and notes / Safety / Serial numbers / Fasteners / Shop supplies / Basic tools / Precision measuring tools / Electrical system fundamentals / Special tools / Basic service methods / Storage / Specifications * TROUBLESHOOTING Operating requirements / Starting the engine / Engine performance / Electric starting system / Charging system / Ignition system / Fuel system / Engine noises / Engine lubrication / Clutch / Transmission / Lighting system / Excessive vibration / Front suspension and steering / Brake problems * LUBRICATION MAINTENANCE AND TUNE-UP Routine safety checks / Maintenance intervals / Tyres and wheels / Periodic lubrication / alignment / Rear brake adjustment / Clutch adjustment / Throttle cable adjustment / Starting enrichment valve (choke) cable adjustment / Air filter service / Tune-up / Compression test / Spark plugs / Ignition timing / Idle speed adjustment / Specifications * ENGINE Removal installation / link here

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Harley FLSTN/FLSTNI Softail Deluxe 2005 * Harley FLSTSC/FLSTSCI Softail Springer Classic 2005 * Harley FXST/FXSTI Softail Standard 2000-2005 * Harley FXSTB/FXSTBI Night Train 2000-2005 * Harley FXSTS/FXSTSI Springer Softail 2000-2005 * Harley FXSTD/FXSTDI Softail Deuce 2000-2005 * Harley FXSTDSE2 Screamin’ Eagle Deuce 2004 Contents: * QUICK REFERENCE DATA * GENERAL INFORMATION Manual organization / Warnings cautions and notes / Safety / Serial numbers / Fasteners / Shop supplies / Basic tools / Special tools / Precision measuring tools / Electrical system fundamentals / Basic service methods / Storage / Specifications * TROUBLESHOOTING Engine principles / Operating requirements / Starting the engine / Engine performance / Starting system / Charging system / Ignition system (carbureted models) / Ignition system (fuel-injected models) / Engine management shutoff valve / Fuel tank gauge / Exhaust system / Evaporative emission control system * ELECTRICAL SYSTEM Electrical connectors / Battery / Charging system / Alternator / Voltage regulator / Ignition system / Starting system / Lighting system / Switches / Horn / Electrical panel / Turn signal module more data

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Note: the "I" designation indicates fuel injected models Contents: * QUICK REFERENCE DATA * GENERAL INFORMATION Manual organization / Warnings cautions and notes / Safety / Serial numbers / Fasteners / Shop supplies / Basic tools / Special tools / Precision measuring tools / Electrical system fundamentals / Basic service methods / Storage / Specifications * TROUBLESHOOTING Operating requirements / Engine starting / Engine performance / Starting system / Charging system / Ignition system / Engine management system diagnostic codes / Cruise control system diagnostic codes / Fuel system (carbureted models) / Fuel system (fuel injected models) / Engine noises / Engine lubrication / Clutch / Transmission / Lighting system / Excessive vibration / Front suspension and steering / Brake system / Specifications * LUBRICATION MAINTENANCE AND TUNE-UP Maintenance schedule intervals / FLHT models) / Maxi-fuse replacement (2004-2005 models) / Front wheel / Front and rear hubs / (FLHTCSE2 and 2004-2005 models) / Front forkNCcartridge type / Steering head and stem / Shock absorbers / Front brake pad replacement / Rear brake pad replacement / Rear master cylinder and rear more here…..

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all models 103 cid (1688cc) 2010 Note: manual includes all Electra Glide Road King and Road Glide models. Contents: * Maintenance * Maintenance Sschedule and Procedures * Engine Oil Level Check * Brake Fluid Level Checks * Tyre Checks * Component Locations * Repairs and Overhaul * Engine Transmission and Associated Systems * Clutch Primary Drive * Fuel System and Lubrication * Ignition System * Frame and Forks * Bodywork * Wheels Brakes and Tyres * Motorcycle Chemicals and Lubricants * Storage * Security * Electrical System including Colour wiring diagrams MODELS COVERED IN THIS MANUAL: * SOFTAIL MODELS: FSXT Softail Standard (carbureted) FLSTC Softail Heritage Classic (carbureted) FXSTS Softail Springer (carbureted) FLSTF Fat Boy (carbureted) FLSTN FLSTS Heritage Springer (carbureted) FXSTD Softail Deuce (carbureted) FXSTB Night Train (carbureted) FXSTI Softail * Storage * Security * Electrical System including Colour wiring diagrams MODELS COVERED IN THIS MANUAL: * SOFTAIL MODELS: FSXT Softail Standard (carbureted) FLSTC Softail Heritage Classic (carbureted) FXSTS Softail Springer (carbureted) FLSTF Fat Boy (carbureted) FLSTN FLSTS Heritage click

The Harley-Davidson Twin Cam motors is motorcycle machines made by Harley-Davidson since 1998. Although these machines differed considerably from the advancement engine, which ended up being derived from the number of single camshaft, overhead-valve motors that were very first circulated in 1936, they share numerous attributes with most earlier Harley-Davidson motors. Both motors have actually two cylinders in a V-twin configuration at 45°, become air-cooled, and activate valves with push-rods. The crankshafts have a single pin with a knife and hand arrangement for the connecting rods. They’re sandwiched between a couple of flywheels.

The Twin Cam 88 was released when it comes to 1999 model 12 months in September 1998. The Twin Cam 96 was released for 2007 design year.

The Twin Cam at first wasn’t utilized in the Softail design household prior to the seasons 2000. This was due to the framework design and vibration transfer to your Softail frame as a result of the direct installation of this motor. Dyna models become “rubber mounted”, damping the majority of vibration transfer towards frame and rider. Another explanation is your engine and transmission on a Twin Cam become straight bolted to each other, because of the framework seat post on a Softail getting back in how of a Twin Cam transmission circumstances. Given that organization determined that a rubber-mounted Softail would affect the range’s visual styling, Harley solved the issue by creating an engine variation known as Twin Cam 88B. It’s basically the exact same engine once the earliest, however with a modified engine block design that incorporates twin chain-driven balance shafts. The Twin Cam 96B motor premiered simultaneously as Twin Cam 96A model, for 2007 model seasons, and is prepared on all Softail versions until it had been replaced by the 103 ci variation.

It’s possible, however, to mount a regular Twin Cam engine to a pre-2000 Softail, through third-party adapters.

Improvement the Twin Cam were only available in early 1990s, as Harley needed to address trouble influencing the previous Evolution motor, specifically architectural weaknesses in the crankcase, oil blood flow and leakages. While aftermarket organizations like S&S period earlier responded with stronger crankcase elements for superior Evolutions, Harley moved for a completely latest design, while maintaining the motor basically and aesthetically similar to the standard 45-degree, air-cooled overhead valve V-twin.

The Twin Cam best shared 18 section along with its predecessor, as the vast majority of the elements had been special into the system. Once the title suggests, the motor makes use of two chain-driven webcams, to adhere to EPA sound regulations. The drivetrain is reinforced through an installing scheme known as the “Revised backside Interface”, allowing the transmission circumstances become mounted right to the trunk of the engine, aided by the primary drive and clutch covers playing less of a structural part; it was furthermore partially the explanation for Softails maybe not at first obtaining a Twin Cam for the 1999 design year.

The first model Twin Cam machines had substantial trouble because of the oiling system. These problems delayed release of the engine as planned for 1997 design year. Once the engines had been operate, oils came out any gasketed joint as well as the breather. Harley wanted the help of Paul Troxler, a young engineer from Southwest Studies Institute and eventually the situation ended up being tracked to a design which drained the cam instance into the crankcase, and made use of an individual scavenge pump. Because of airflow through harbors when you look at the crankcase wall, the cam situation had not been draining precisely. After much examination, the answer was to secure the cam circumstances through the crankcase and employ a dual scavenge system, that was integrated into the engine, rather than as an outboard pump as utilized on elderly gigantic Twins because the original Knucklehead. However, oils was nonetheless maybe not scavenging correctly from crankcase, and this ended up being tracked to an acoustic trend as a result of quality for the scavenge inlet. Restricting the diameter of this inlet, a counter-intuitive solution, fixed that issue.

The terms longitudinal engine and transverse system are most often used to refer to the crankshaft positioning, however, some supply, more prominently Moto Guzzi, use the language when you look at the other method.

A Moto Guzzi Technical Services agent attempted to show Los Angeles Times columnist Susan Carpenter that Moto Guzzi machines are “known as ‘transverse’ due to the fact system was mounted using the crankshaft focused front to straight back rather than left to right.” Despite this, it can be assumed that those who phone V-twin bike motors “transverse” when they’re installed aided by the crankshaft front-to-back and also the cylinders protruding the side are saying that for them, the motor’s axis may be the range passing in one cylinder to another, at the right angle towards crankshaft, rather than going because of the crankshaft’s axis. Definitely technical means, such as for example V. Cossleter’s bike Dynamics, or Gaetaeno Cocco’s bike Design and Technology become careful not merely to make use of the terms “longitudinal engine” or “transverse system,” but rather to indicate they mark the system’s direction on the basis of the crankshaft, and so they will state “transverse crankshaft motor” or “longitudinal crankshaft engine”, or, alternatively, “transversely mounted cylinders” in referenced on classic BMW positioning, with a longitudinal crankshaft and cylinders at a right direction towards the axis regarding the frame.
Transverse crankshaft installing
Honda 90° transversely attached V-twin.

The motor may be attached in transverse crankshaft place as on Harley-Davidsons, Ducatis and lots of latest Japanese motorbikes. This design creates a twin cylinder bike motor this is certainly little or no larger than an individual. A narrower motor are mounted reduced in the framework with dealing with benefits. A disadvantage of the configuration for air-cooled engines is the fact that the two cylinders receive different air-flows and air conditioning of this back cylinder is often limited. Cooling problems were significantly mitigated with all “four” sides of each and every cylinder exposed to ventilation. This differs from a parallel-twin cylinder motor which has a distinct front side, straight back, and edges, however the inside of each cylinder is certainly not confronted with airflow once the cylinders are usually joined up with together with a cam string working up through block in-between the cylinders.

Some transverse V-twins utilize an individual carburettor in the exact middle of the V-angle to feed both cylinders. While this enables an economy of areas, it generates more air conditioning issues for the back cylinder by putting their hot fatigue slot and pipe at the back of the cylinder, where it could be subjected to less air conditioning airflow.

The classic Harley-Davidson engines is V-twin engines, with a 45° perspective involving the cylinders. The crankshaft have one pin, and both pistons are linked to this pin through their connecting rods.

This 45° perspective was covered under several United States patents and is a manufacturing tradeoff enabling a large, high-torque motor in a comparatively smaller room. They causes the cylinders to fire at irregular periods and creates the choppy “potato-potato” noise therefore highly linked to the Harley-Davidson brand name.

To simplify the system and minimize expenses, the V-twin ignition had been designed to run with an individual pair of things and no provider. That is known as a double fire ignition program, causing both spark plugs to fire irrespective of which cylinder was on its compression stroke, using the other spark plug shooting on its cylinder’s exhaust swing, effectively “wasting a spark”. The fatigue note is basically a throaty growling noise with popping. The 45° design of this system hence creates a plug shooting sequencing as such: the very first cylinder fires, the next cylinder fires 315° later on, then there is a 405° space through to the earliest cylinder fires once again, offering the motor its special noise.

Harley-Davidson possess utilized different ignition systems throughout their record – feel it early guidelines and condenser program,, magneto ignition program used on some 1958 to 1969 Sportsters, very early electric with centrifugal mechanical advance weights,, or even the late electronic with transistorized ignition controls component, even more familiarly known as the black colored box or the brain,.

Beginning in 1995, the organization launched Electronic gas Injection as a choice the 30th anniversary version Electra Glide. EFI became standard on all Harley-Davidson motorcycles, like Sportsters, upon the development of the 2007 manufacturer product line.

In 1991, Harley-Davidson started initially to be involved in the quality of sound performing Group, started by Orfield laboratories, Bruel and Kjaer, TEAC, Yamaha, Sennheiser, SMS and Cortex. This is the country’s first group to fairly share studies on mental acoustics. Later that seasons, Harley-Davidson took part in some sound quality scientific studies at Orfield Labs, centered on recordings taken in the Talladega Superspeedway, with the objective to lower the sound level for EU requirements while analytically recording the “Harley noise”. This studies triggered the bicycles which were introduced in conformity with EU requirements for 1998.

On February 1, 1994, the organization recorded a sound trademark application the distinctive sound associated with Harley-Davidson motorcycle system: “The level comes with the exhaust sound of applicant’s motorbikes, created by V-twin, typical crankpin bike engines when the items are in utilize”. Nine of Harley-Davidson’s competitors filed commentary opposing the application form, arguing that cruiser-style motorcycles of numerous companies use a single-crankpin V-twin motor which build an equivalent sound. These objections were followed closely by litigation. In Summer 2000, the business dropped efforts to federally enroll their trademark.

Big V-twins

F-head, also called JD, pouch valve and IOE, 1914–1929, and 1922–1929
Flathead, 1930–1949 and 1935–1941.
Knucklehead, 1936–1947 61 cubic inches, and 1941–1947 74 cubic inches
Panhead, 1948–1952 61 cubic inch, and 1948–1965, 74 cubic inch
Shovelhead, 1966–1984, 74 cubic inches and 80 cubic inch since late 1978
Advancement, 1984–1999, 80 cubic inch
Twin Cam 1999–present, when you look at the appropriate versions:
Twin Cam 88, 1999–2006, 88 cubic inches
Twin Cam 88B, counterbalanced type of the Twin Cam 88, 2000–2006, 88 cubic inch
Twin Cam 95, since 2000, 95 cubic inch
Twin Cam 96, since 2007. At the time of 2012, just the Street Bob and Super Glide Custom versions still utilize the 96.96 cubic inch
Twin Cam 103, 2003–2006, 2009, 103 cubic inches, traditional on 2011 Touring models: super restricted, Road master Timeless and path Glide Ultra and recommended on the Road Glide Custom and road Glide. Standard on most 2012 brands excluding Sportsters and 2 Dynas. Traditional on all 2014 dyna models.
Twin Cam 110, since 2007, 110 cubic inch
Milwaukee-Eight
Twin-cooled 107 ci: Standard on touring and trike design 12 months 2017+.
Twin-cooled 114 ci: Optional on touring and trike design 12 months 2017+, traditional on CVO versions.

Little V-twins
Development Sportster

D Model, 1929–1931, 750 cc
Roentgen design, 1932–1936, 750 cc
W Model, 1937–1952, 750 cc, solo
G Model, 1932–1973, 750 cc
K Model, 1952–1953, 750 cc
KH design, 1954–1956, 900 cc
Ironhead, 1957–1971, 883 cc; 1972–1985, 1,000 cc
Development, since 1986, 883 cc, 1,100 cc and 1,200 cc

Transformation engine
Transformation motor in V-Rod

The change system is based on the VR-1000 Superbike race regimen, co-developed by Harley-Davidson’s Powertrain manufacturing employees and Porsche Engineering in Stuttgart, Germany. It’s a fluid cooled, double overhead cam, internally counterbalanced 60 degree V-twin engine with a displacement of 69 cubic inch, producing 115 hp at 8,250 rpm during the crank, with a redline of 9,000 rpm. It absolutely was introduced for the new VRSC line in 2001 the 2002 model 12 months, starting with the single VRSCA design. The change marks Harley’s very first collaboration with Porsche since the V4 Nova venture, which, like the V-Rod, is a radical deviation from Harley’s old-fashioned lineup until it was terminated by AMF in 1981 in support of the advancement motor.

A 1,250 cc Screamin’ Eagle type of the change motor ended up being offered for 2005 and 2006, and is present after that in a single production model from 2005 to 2007. In 2008, the 1,250 cc transformation system became standard for the whole VRSC line. Harley-Davidson claims 123 hp at the crank when it comes to 2008 VRSCAW design. The VRXSE Destroyer comes with a stroker Screamin’ Eagle 79 cubic inch change system, creating above 165 hp.

750 cc and 500 cc models associated with the Revolution motor are used in Harley-Davidson’s Street type of light cruisers. These engines, known as the transformation X, need an individual expense cam, screw and locknut valve adjustment, just one internal counterbalancer, and vertically divide crankcases; most of these changes making it not the same as the original change design.

Harley-Davidson Twin Cam engine – Wikipedia

The Harley-Davidson Twin Cam engines are motorcycle engines made by Harley-Davidson since 1998. Although these engines differed significantly from the Evolution …

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The Harley Davidson Twin Cam 103 engine has 1688 cc (103 cubic inches) of displacement producing 72.8 horsepower @ 5500 rpm and 84.4 ft lbs of torque @ 4250 rpm. This …

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Harley-Davidson – Wikipedia

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Performance SE-585 Cam Kit at the Official Harley-Davidson Online Store. This cam is a great match for riders of heavy Touring bikes looking for big torque at the low …

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Update! Harley-Davidson has unveiled new “Milwaukee Eight” engines that replace the Twin Cam – a 93-horsepower 107ci and a 101-horsepower 114ci.