The 1,450 cc Harley Davidson Engine, also known as the Twin Cam 88, was a breakthrough in motorcycle history when it came out. The engine was made and used on many different Harley Davidson bikes from 1999 to 2006. This engine has recently been retired and a new engine based on the 1,450 cc is being used in new Harley Models. The 1,450 cc remains a favorite engine for Harley riders to this day. Show Type of EngineThe 1,450 cc is equivalent to an 88 cubic inch block, and is is a twin-camshaft engine. The twin camshaft was also released as a Twin Cam 88B which was quite a bit bigger at 96 cubic inches. The bore of this engine is 3.75 inches and the stroke is four inches. It pushes 80 horsepower at 5,200 rpm. The torque of this engine is 82 ft-lb at 3,500 rpm. The engine can have different bore and strokes as well as horsepower and torque ratings depending on what motorcycle it is in. Unique FeaturesThis Harley Davidson engine has a dual coil system which ensures that spark can't be wasted. It also has a uniquely shaped combustion chamber. This chamber is shaped like a bathtub and allows for higher engine compression levels. This improves engine efficiency. CamshaftThe camshafts in the 1,450 cc engine are what give it the name Twin Cam. As its title insinuates, there are two camshafts in this engine, one for each of the engine's cylinders. These camshafts then align easily with other engine components with their two cam lobes. A chain, that is silent, drives the camshafts' operation. Although the lack of noise from the chain can be nice, this chain causes timing issues. To correct the problem, many Harley owners put in after-market camshaft drives. BikesMany bikes were made from 1999 to 2006 with the 1,450 cc. These included Dyna-Glide bikes such as the FXD, FXDX, FXDL, FXDWD and the FXDs-CONV. Softail bikes were also made with the 1,450 cc Twin Cam such as the FXST/FXSTI Softail Standard and theFXSTB/FXSTBI Night Train. Harley's FLHT Electra Glide Standard and FLHR/FLHRI Road King are just a couple of touring bikes that came with the 1,450 cc engine. References
Writer Bio Lindsey Fisher began writing professionally in 2010. Fisher has been published in the online magazine “Domestic Driver.” She graduated from Colorado State University with a Bachelor of Arts in journalism and technical communications with a minor in sociology. The Harley-Davidson Twin Cam are motorcycle engines made by Harley-Davidson from 1998 to 2017. Although these engines differed significantly from the Evolution engine, which in turn was derived from the series of single camshaft, overhead valve motors that were first released in 1936, they share a number of characteristics with nearly all previous Harley-Davidson engines. Both engines have two cylinders in a V-twin configuration at 45°, are air-cooled (some touring models use liquid cooling for the heads),[1] and activate valves with push-rods. The crankshafts have a single pin with a knife and fork arrangement for the connecting rods. These are sandwiched between a pair of flywheels. The Twin Cam 88 was a traditional design from Harley-Davidson, using two cams to drive the valvetrain, with the first being the famous '8-Valve' OHV V-twin racing models of 1915. Their 1920s single-cylinder models (the A, AA, BA, BB, and Peashooter) also used twin camshafts in the timing chest, and did their 1930s flathead engine models, like the VL and UL Big Twins, and the entire range of 45ci (750cc) V-twins from 1930 onwards: the Models D and W and their variants, such as the WLA military motorcycle and WR racing motorcycle.[2] The Twin Cam 88 was released for the 1999 model year in September 1998.[3] The Twin Cam 96 was released for the 2007 model year.[4] 88B and 96B Engines[edit]The Twin Cam initially was not used in the Softail model family before the year 2000. This was due to the chassis design and vibration transfer to the Softail frame as a result of the direct (hard) mounting of the engine. Dyna models are "rubber mounted", damping the majority of vibration transfer to the frame and rider. Another reason was that the engine and transmission on a Twin Cam are directly bolted (but are still separate units) to each other, with the chassis seat post on a Softail getting in the way of a Twin Cam transmission case. As the company determined that a rubber-mounted Softail would affect the line's visual styling, Harley solved the issue by designing an engine variant known as Twin Cam 88B.[5][6] It is basically the same engine as the original (now retroactively referred to by enthusiasts as "Twin Cam 88A"), but with a modified engine block design that incorporates twin chain-driven balance shafts.[7] The Twin Cam 96B engine was released at the same time as the Twin Cam 96A model, for the 2007 model year, and was equipped on all Softail models until it was replaced by the 103 ci version.[8] It is possible, however, to mount a regular Twin Cam motor to a pre-2000 Softail (or any chassis that accepts an Evolution engine) through third-party adapters.[6] Differences from predecessor (Evolution engine)[edit]The engine design differed considerably from its predecessor the "Evo" although it shared some design elements with the Sportster line. The 88 represents the displacement in cubic inches of the standard engine. The bore is 3.75 in (95 mm) and the stroke is 4.00 in (102 mm), meaning the displacement is 88 cu in (1,450 cc). The Twin Cam 95 was introduced with the Screamin' Eagle (Later known as CVO) Models and ran until the 88 was discontinued after 2006. The Twin Cam 95 displaces 94.6 cu in (1,550 cc). The Twin Cam 96 displaces 96.7 cu in (1,584 cc). The company released 103 cu in (1,690 cc) for 2010 Electra Glide Ultra Limited models, and later for 2012 Softail models and 110 cu in (1,801 cc) for Screamin' Eagle/CVO Models. ChangeEvoTwin CamDisplacement82 cu in (1,340 cc)88 cu in (1,450 cc), 95 cu in (1,550 cc), 96 cu in (1,584 cc), 103 cu in (1,690 cc), 110 cu. in. (1,801 cc).Oil pumpExternal. Connected through a series of gears.Internal twin-gerotor. Connected directly to the right side pinion shaft. This pump is more efficient, maintains a higher pressure and larger volume.CamsSingle, with 4 lobes.One per cylinder, each with 2 lobes. This allows the push rods to be better aligned with the rocker arms.Cam driveGearsSilent chain. This change was reported as necessary to meet EPA noise requirements. Many users installed aftermarket gear driven replacements to increase timing accuracy[9] and to avoid cam chain tensioner wear.Transmission attachmentDisplaced from motorTransmission casing is attached directly to the engine.Oil tankUsually surrounds battery box under the seat.Below and behind the transmission assembly (except Softails, which are same as noted for the Evo)Combustion chamber"D" shape"Bathtub" shape. Allows more efficient combustion and has higher compression.Spark firingWasted spark (both plugs fire at the same time). The ignition system uses single coil. Plugs are 14 mm (0.55 in).No wasted spark. The ignition system employs dual coils. Plugs are 12 mm (0.47 in).CoolingAir-cooledAlso air-cooled. Increased cooling fin areas and an oil jet that sprays the bottom of the pistons provide additional cooling capability.Development[edit]Development of the Twin Cam started in the early 1990s, as Harley sought to address problems affecting the previous Evolution engine, particularly structural weaknesses within the crankcase, oil circulation and leakages.[10] While aftermarket firms such as S&S Cycle previously responded with stronger crankcase components for high-performance Evolutions, Harley went for a completely new design, while keeping the engine fundamentally and aesthetically similar to the traditional 45-degree, air-cooled overhead valve V-twin.[3] The Twin Cam only shared 18 parts with its predecessor, as almost all of the components were unique to the engine. As the name implies, the engine uses two chain-driven cams, to comply with EPA noise regulations. The drivetrain was reinforced through a mounting scheme called the "Revised Rear Interface", allowing the transmission case to be mounted directly to the rear of the engine, with the primary drive and clutch covers playing less of a structural role; this was also partly the reason for Softails not initially receiving a Twin Cam for the 1999 model year.[10] The early prototype Twin Cam engines had considerable trouble with the oiling system. These problems delayed release of the engine as scheduled for the 1997 model year. When the engines were run, oil came out any gasketed joint as well as the breather.[10] Harley sought the help of Paul Troxler, a young engineer from Southwest Research Institute and eventually the problem was traced to a design which drained the cam case into the crankcase, and used a single scavenge pump. Due to airflow through ports in the crankcase wall, the cam case was not draining properly. After much testing, the solution was to seal the cam case from the crankcase and use a dual scavenge system, which was incorporated into the engine, rather than as an outboard pump as used on older Big Twins since the original Knucklehead. However, oil was still not scavenging properly from the crankcase, and this was traced to an acoustic phenomenon due to the caliber of the scavenge inlet. Restricting the diameter of the inlet, a counter-intuitive solution, solved that problem.[11] How much HP does a Harley 88 have?
How many cc is a 88 twin cam?The 88 represents the displacement in cubic inches of the standard engine. The bore is 3.75 in (95 mm) and the stroke is 4.00 in (102 mm), meaning the displacement is 88 cu in (1,450 cc).
What year did the twin cam 88 come out?The Harley-Davidson Twin-Cam V-twin was introduced in 1998. Here's a look at the technical elements and developments that allowed the 88-cu. -in. engine the increase power and reliability.
How much HP does a Twincam have?MG A Twin Cam Specs. With a maximum top speed of 114 mph (183 km/h), a curb weight of 2099 lbs (952 kgs), the A Twin Cam has a naturally-aspirated Inline 4 cylinder engine, Petrol motor. This engine produces a maximum power of 110 PS (109 bhp - 81 kW) at 6700 rpm and a maximum torque of 142.0 Nm (104 lb.
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How much horsepower does a twin cam 88 have
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