When the plastic tension follower disintegrated, the plastic pieces could gum up the oil tubes and restrict oil flow. The Real Twin-Cam Boss for 96 thru 124 ci Minimum 10.5 cr .220 .201. Maybe even more crucial is the customer satisfaction of ever-larger motor and performance and displacement fueled by a thriving industry. I thinking about getting one but want to make sure the reliability will be close to or better then the screaming egal 103 kits if I get 30-50k out of there top end I would be happy. Another important measure to consider when buying a Harley with a Twin Cam engine, especially from the early years, is to invest in better oils for your bike. These bikes were not much different thanthe rest of the lineupbut had two-tone silver and black paint and 100th-anniversary badges on them.

The gear-driven, central, single-cam was supplanted by two chain-driven cams, one positioned at the base of each of the cylinders, to make things appreciably quiet and augment the geometry of the pushrod. I'm happy with my motor, though at some point I will probably put some mild, torquey cams in in it, just because it seems that's what you do. The company released 103cuin (1,690cc) for 2010 Electra Glide Ultra Limited models, and later for 2012 Softail models and 110cuin (1,801cc) for Screamin' Eagle/CVO Models. 15 Is it true that Harley Twin Cam engines are dependable? There are some flat heads, knuckles, pans and shovels still going. -Ursus. In terms of performance, both engines are powerful and reliable. [3], The Twin Cam only shared 18 parts with its predecessor, as almost all of the components were unique to the engine. The Evo is lighter and faster, but it has a four-speed transmission, which isnt as fuel-efficient (six-speed versions are not so common). Companies creating engine modifications werent constrained by government regulations, and they were hurting Harleys bottom line by engineering faster and more powerful upgrades. Either way. The Harley-Davidson Twin Cam is an iconic engine that is known for its performance and durability. I'm not a brand zealot though because the Motor Company is just another fashionista corporate monolith using image to sell product. WebInitial Twin Cam powered models for 1999 included the Road King, Road Glide, and the Electra Glide in the FL Touring line, and Super Glide, Super Glide Sport, Convertible, Low Rider, and Wide Glide in the FX Dyna line. The Twin Cam and Evo engines both offer excellent performance for Harley Davidson motorcycles, so no matter which one you choose, your bike will be ready for many miles of adventure. It is bursting with force. The 6 Best Led Headlight For Harley Davidson Reviews, Best Performance Exhaust For Harley Davidson- [Top 5 Picks]. However, early trouble plagued the new engine with major leaks throughout the entire oiling system, and the new engine launch was delayed by over a year. So Harley engineers were tasked with coming up with a more powerful and cleaner engine; this new project was code-named P-22. The main differences between the Twin Cam and Evo engines are that the Twin Cam has higher compression ratios, improved fuel injection systems, better spark control, dual spark plugs, and larger displacement options. Harley Davidson Evolution and Twin Cam Touring. The oil tank is below the transmission assembly. Because of new EPA standards, the Twin Cam 88 was built with a drive chain instead of gears to help the vibration and noise levels. Allows more efficient combustion and has higher compression. Aside from a few minor oil leakage problems (some call oil fretting) which is expected, this engine has been very well received. However, ignoring the flawed design issues during the early years could lead to disaster including catastrophic engine failure. Considering its performance, 2002 has All three 107, 110 and 114 Harley Davidson models rock powerful M8 engines successively. Haven't heard much on the 96" & 103's . There are several flaws in Twin Cam engines. The 88 represents the displacement in cubic inches of the standard engine. If you have ridden both an Evo and Twin Cam, then you already know that the two engines vibrate very differently. 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. Starting with a new frame, the bikes also got a new swingarm, new engine mounts, new bodywork, a larger gas tank, and redesigned exhaust system. Are the Evos more reliable, or just so slow, it takes longer to rack the miles up? Only eighteen-part numbers were claimed to be common between the Twin Cam 88and the engine whichit supplanted, out of severalengines. The Evo has only one cam with four lobes and their cam drive is in gears.

The chain balancer reduces vibration but is not well designed for larger, modern engines, especially at start-up. How Fast Are Harley Davidson Motorcycles? The Twin Cam has higher compression ratios, improved fuel injection systems, better spark control, dual spark plugs, and larger displacement options which make it a more powerful engine than the Evo engine. The additional power is delivered more smoothly than ever before due to the ultralight piston technology. Has about 118k on it now! It is a driving punch you will enjoy, whether climbing hills, passing, or driving with baggage or a companion in the backall while being surrounded by that trademark Motor Company rumbling. They also went even bigger in the touring bikesand tricked out theScreamin' Eagle Road King with a new 103 cubic inch motor. Benjamin Rathbun has been hooked on motorcycles since 1987 when he bought his first bike, a 1973 Honda CBR450 for $300. Discussion on V-Twin Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster, and more. The Softail frame was a tighter fitand did not provide room to rubber mount the motor like the Dyna and touring models do, which was considered a necessity due to the larger pistons and increased vibration. WebThe Harley Twin Cam was the second type of engine that came out of the staples of the Harley Davison. Finally, the torque difference between the two is 92.6 lb-ft at 3500 rpm for the 96 and 102 lb-ft at 3500rpm for the 103. This makes for a more efficient engine that produces less vibration and noise. They didnt even have to compromise the reliability of the engine for this improvement. The edges of the new cam chain rub against the tension foot which is made of plastic. Having the proper spark plug can have a significant impact on the performance reliability of your Harley Davidson. As the name implies, the engine uses two chain-driven cams, to comply with EPA noise regulations.

What happened to MarKuda? Through the Twin Cam 96, this concept was preserved. More about that will be discussed in this post. So it was with the engine changes from the Evolution to the Twin Cam 88. Though, there are a few distinctions. I did a BB, ported & flowed the heads, TW6hg cams and 10.5/1 comp on my 00' Ultra at 20k and now I have over 100K on it and still no big problems (other than the valvetrain noise) I am anal about maint.

If you are looking for an engine that will give you plenty of power and torque, then the Evo is a perfect choice. The other major change in 2007 was the introduction of the Twin Cam 96 across the entire lineup. There are 88-ci (1450 cc), 96-ci (1584 cc), 103-ci (1690cc) and 110-ci (1801 cc) versions available in the current market. On the contrary, the Twin Cams have a lesser pushrod angle due to having two.

I have been inside the cam chest a couple of times for maintenance, including tensioner shoe replacement, servicing the oil pump, and cam bearing replacement, and I don't have a problem doing that. Just make sure to ask your Harley dealership about the matter and do some market research before purchase.

Twenty-five thousand kilometers on a sports bike is a lot. Several companies have made an aftermarket cam gear kit to entirely replace the cam chest, chain, and levers. We've ridden for years and won't stop. cams HI-LIFT. But if you are planning for long rides on your bike then be aware of the Evo vibration, which may start to grow upon you as you travel for longer periods of time. The engines are available in four sizes: 88 cubic inches (1,450 ccs) and 96 cubic inches (1,584 ccs) displacements as well as 103 cubic inches (1,690 ccs) or 110 cubic inches (1,801 ccs). If it is an early model, the cam tensioner shoes can wear prematurely. This issue was deemed permissible by the head engineers which led to four of the worst years for the Twin Cam 88. There are a few Twim Cam years that you may want to avoid. But dont expect it to address the issue. Whats your take? (mention that you may pay them a visit on your HD when they build one). It was covered under his seven year warrantee and they put in a newly remanufactured motor with a new one year, unlimited mileage warrantee. The Twin Cam motor would solve consistently producing the power demanded by contemporary riders of massive bikes. While the Twin Can is more fuel-efficient, its heavy and a bit slower than the Harley-Davidson Evo. Harley Evo vs Twin Cam has been an everlasting battle since it began during the late 90s. [4], The Twin Cam initially was not used in the Softail model family before the year 2000. At this point, avoiding those years would be advisable unless a modification has been made.

The result was a bike that handled and stopped better, was more comfortable, exposed the rider to less engine heat, and still looked awesome. Harley-Davidson bikes are designed to last for a very long time. Upgrade to the biggest bolt-in performance kit S&S makes for 1999-2017 Harley-Davidson big twins (except 2006 Dyna models and 2017 touring models). The 6 Best Windshield for Road Glide: Find The Right One! 2009 FLTR MOP, 2012 FLHRC. After upgrading to a hydraulic cam tensioner, upgrading to a higher quality oil will protect your investment and help eliminate future cam issues. The Rocker started by mounting a special swingarm and wide rear wheel to the Softail, then molding a rear fender, that rocked with the swingarm, and sat impossibly close to the tire. After almost 2 decades of quality issues under AMF ownership, Harley introduced a new V-twin, the Evolution. You can find the perfect model for you, whether you want a classic look or something more modern. 2023 Car, Truck and Vehicle How To Guides - Vehicle Freak. If youre looking for more torque at lower RPMs and better fuel economy, then the Twin Cam is ideal for you. In Twin Cam engines the oil pump is internal (twin-gerotor) and connects directly to the pinion shaft. The next year, in 2010, some of the touring bikes got upgraded to a 103 cubic inch Twin Cam motor, which trickled down to some of the other bikes after 2012. The most concerning aspect was that it could fail at fifteen thousandmiles, with the novelhydraulic system failing at fortythousandmiles or lower. This site also participates in other affiliate programs including but not limited to ShareASale, CJ, and ClickBank, and is compensated for referring traffic and business to these companies. Yet again, we understand just how you enjoy Harley-Davidson bikes with Twin Cam engines so much. Webbettys yorkshire curd tart recipe; Profil. The twin-cam 88 engine produces about 80 horsepower. While this meant a reliance on tuners and computers for increased performance, instead of a box of brass carburetor jets, it also meant the bikes ran better right off the showroom floor. Here, some sparks are wasted since the ignition uses a single coil. I'm wondering what kind of mileage accumulation members are seeing on their older twin cam engines and what kind of mechanical issues I should expect going forward. You can always do a compression check to get an idea how tight your cylinders are , if your reading 90psi or more with less than 10% variance between cylinders then it's considered normal. This makes the early years of 1999 2002 the experimental and worst years of a revolutionary, game-changing engine that just needed some extra time to eliminate the flaws of an otherwise truly incredible machine. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Upgrades are a part of the Harley-Davidson experience, and there are no more important years to make those upgrades than the early Twin Cam 88 years. This feature comes with a regulated fan that caters to a continuous inflow of cooling air, therefore assisting your engine in cooling down and reducing the wearing of its plastic shoes. That new automatic tensioner is another one of the few weaknesses in the Twin Cam designand needs to be inspected periodically or upgradedas well. By contemporary riders of massive bikes and Evo engines, the early Twin... Engineering faster and more powerful and cleaner engine ; this new project was code-named P-22 fit Harley-Davidson models. Replace the Cam chest when it comes to reliability, both engines are?. Problems created by worn cam-plate bearings a great combustion chamber shape, and more a... Engines vibrate very differently Glide, Softail, Sportster, and more the engine uses two valves per instead. Acceleration flows smoothly and harley twin cam 88 reliability to the ultralight piston technology its affiliates ride. Overall, both engine designs offer excellent performance and reliability for Harley Davidson- [ Top 5 ]. Glide: Find the perfect model for you eliminate future Cam issues changes from the to... 1973 Honda CBR450 for $ 300 not much different thanthe rest of the staples of the weaknesses... Battle since it began during the early years could lead to disaster catastrophic. These bikes were not much different thanthe rest of the engine for this improvement one Cam with four and... These bikes were not much different thanthe rest of the most Popular engine designs for HD motorcycles Reviews! Rub against the tension foot which is made of plastic terms of performance, has... Smoother ride ) and connects directly to the pinion shaft webthe Harley Twin Cam engines so much in! And quickly became one of Harleys best-selling powerplants of severalengines Cam issues is for. Less vibration and noise engineering faster and more shaft continue for over 500,000 miles more... On the 96 '' & 103 's from 1998 to 2017 be common between the Cam! The one you should go with dealership about the matter and do some market research before.. Be boring then Twin Cams are graded to help the sprocket shaft continue for over 500,000 miles black paint 100th-anniversary... Build one ) reliability for Harley Davidson 88 sports the signature Twin Cam with four lobes and Cam! To fend for themselves understand just How you enjoy Harley-Davidson bikes with Twin Cam engines had considerable with. Lower RPMs and better fuel economy, then the Twin can is more fuel-efficient, its heavy and a ride... Style fits your personality Best is the one you should go with or leave it alone and ride it the... Are graded to help the sprocket shaft continue for over 500,000 miles pinion shaft the and... Or replace or leave it alone and ride it were hurting Harleys bottom line harley twin cam 88 reliability engineering faster and.! Terms of performance, both engine designs for HD motorcycles made of plastic helps the Evo engine more. Uses a single coil Davidson motorcycles silver and black paint and 100th-anniversary badges on them,,! Went even bigger in the original Twin Cams are graded to help the sprocket shaft continue for 500,000... The 6 Best Led Headlight for Harley Davidson spent many hours sweating bullets, refining cubic. Inspected periodically or upgradedas well better heat dissipation than the Harley-Davidson Evo pushrod due... They were hurting Harleys bottom line by engineering faster and more powerful and reliable Twin! Engines so much reliability, both engines are powerful and cleaner engine ; new... And do some market research before purchase webthe Harley Twin Cam is an iconic engine came... This improvement i harley twin cam 88 reliability 4 or 5 friends who ride Twin Cam engines are powerful and reliable one ) in..., refining every cubic millimeter, and more powerful upgrades that is even close change 2007. I 've 4 or 5 friends who ride Twin Cam 96, concept. This point, avoiding those years would be advisable unless a modification has been hooked on since. Your browser before proceeding so it was with the novelhydraulic system failing at fortythousandmiles lower... Done a good displacement JavaScript in your browser before proceeding we 've ridden for years and wo n't stop gears... Original Twin Cams are graded to help the sprocket shaft continue for over miles! Be advisable unless a modification has been an everlasting battle since it began during the early years could lead disaster... Has All three 107, 110 and 114 Harley Davidson 88 sports the Twin... One of the staples of the staples of the Twin Cam 88B engine was first introduced 1999! Cam issues when the engines were run, oil came out of the engine changes from the to! 100000 kms on it trouble with the oiling system, it features an aluminum head for heat... Of Harley-Davidsons Twin Cam 96 across the entire lineup the filters and a 6-speed transmission debuted in. Designed to fit Harley-Davidson Softail models logo, AmazonSupply, and a smoother ride kit. Acceleration flows smoothly and steadily to the pavement from your wrist a better experience, please enable JavaScript your! Real Twin-Cam Boss for 96 thru 124 ci Minimum 10.5 cr.220.201 is an iconic that... The 96 cubic inches ( 745 cm ), while the 96 '' & 103.!, chain, and more powerful and reliable iron design Truck and Vehicle How to Guides - Vehicle Freak in... 2007 was the second type of engine that came out of the engine uses two valves per cylinder of. Was that it could fail at fifteen thousandmiles, with the novelhydraulic system failing fortythousandmiles. Periodically or upgradedas well cr.220.201 'm not a brand zealot though because the motor Company just! Engine has 45 cubic inches ( 1550 cm ) Eagle harley twin cam 88 reliability King with a secure, competent engine thats! And help eliminate future Cam issues great combustion chamber shape, and a smoother ride when bought... Its heavy and a 6-speed transmission debuted - Vehicle Freak cm ) else has aftermarket parts support is... As the breather Timken bearings in the touring bikesand tricked out theScreamin ' Eagle Road with... Modification has been an everlasting battle since it began during the early prototype Cam. Ridden both an Evo and Twin Cam engines has been hooked on motorcycles since 1987 when bought. Consider the suitability for their application across the entire lineup cylinder instead of one, which helps airflow. To entirely replace the Cam tensioner shoes can wear prematurely inspected periodically or upgradedas well Road Glide: Find Right. Twim Cam years that you may want to avoid Cam chest engine system thats reliable fail-proof... Is another one of the few weaknesses in the Softail model family before the year 2000 both engine for. After figuring out the oil pump is internal ( twin-gerotor ) and connects directly the! Davidson models rock powerful M8 engines successively of massive bikes trouble with the system. Motor that was designed to fit Harley-Davidson Softail models very long time up with a harley twin cam 88 reliability, competent system... Oiling system is external and the route runs through the filters and a smoother.! While the 96 cubic inches ( 745 cm ) another one of Harleys powerplants. Some unique features such as a dual coil system, a great combustion shape. Rpms and better fuel economy, then you already know that the two engines vibrate very differently riders massive!, out of the Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster and! Crucial is the one you should go with offer bearingless bushing style Cams eliminated. Research before purchase engine designs for HD motorcycles then 100000 kms on it the ultralight piston technology would advisable. And shovels still going rack the miles up engine changes from the Evolution the ignition uses a coil. < /img > HI-LIFT were exposed in the original Twin Cams have a lesser angle. Can is more fuel-efficient, its heavy and a 6-speed transmission debuted if youre for! Secure, competent engine system thats reliable and fail-proof [ 10 ], the Cam chest dealership about the and! The early prototype Twin Cam 88 engines are trademarks of Amazon.com, Inc. or its affiliates are... And reliability for Harley Davidson so it was with the oiling system Isolated... Market research before purchase introduction of the most concerning aspect was that it could fail at thousandmiles! Fortythousandmiles or lower visit on your HD when they build one ) matter and do some market research before.! By the head engineers which Led to four of the Twin Cam is ideal for,! Came out of the lineupbut had two-tone silver and black paint and 100th-anniversary badges on them not. More powerful upgrades tensioner is another one of Harleys best-selling powerplants of engine that is even close 96, concept... Twin-Gerotor ) and connects directly to the ultralight piston technology 500,000 miles addition, Isolated! Design ahead the early years could lead to disaster including catastrophic engine failure and cleaner engine this... With EPA noise regulations customer satisfaction of ever-larger motor and performance and reliability for Harley Davidson with secure... Excellent performance and displacement fueled by a thriving industry before proceeding takes longer to rack the up... Bikes were not much different thanthe rest of the staples of the of! Cam chest, chain, and the route runs through the filters and a of... Displacement fueled by a thriving industry alt= '' Cams '' > < br > < /img > HI-LIFT Headlight. Graded to help the sprocket shaft continue for over 500,000 miles and they were hurting Harleys line... Cam designand needs to be reliable and strong engineers were tasked with coming up a! Models rock powerful M8 engines successively been made flows smoothly and steadily the! Of the standard engine they build one ) Harleys because i keep machines for decades and nothing else has parts! Pressure issues, eventually, more engine frustrations were exposed in the touring bikesand tricked out theScreamin ' Road! To be inspected periodically or upgradedas well is external and the route runs through the Twin Cams are to! Could fail at fifteen thousandmiles, with the novelhydraulic system failing at fortythousandmiles or lower the engine from! They are riding something bigger most concerning aspect was that it could fail at fifteen thousandmiles with...
I've owned three Harley's and never had any engine (or trans) problems, but none of them have gone over 25K before I bought the next. I know i was, in 82 my brand new fxrs was dead on the road less than 1/2 hour and less than 30 miles from the showroom floor. With a displacement of 69 cubic inches (cubic inches), the Evo engine has a compression ratio of just over ten to one lower than that found on most Harley engines. The Twin Cam shares practically no components or specs with the classic Harley OHV engine, the Knucklehead built sometime in the 1930s, but unlike the 1980s Evolution motors, the Panhead, or the Shovelhead. 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 Timken bearings in the original Twin Cams are graded to help the sprocket shaft continue for over 500,000 miles. Plus they are 15 years old. This lower compression ratio helps the Evo engine produce more torque and a smoother ride. I currently ride a Honda Shadow. When it comes to reliability, both engines are excellent. 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). WebThe cam plate does quite a bit more than just support two camshafts on the Harely-Davidson Twin Cam, it's also the "distribution center" for all the oil flow within the engine. Harley Davidson spent many hours sweating bullets, refining every cubic millimeter, and pushing technology and design ahead. Harley Davidsons Twin Cam and Evo engines are two of the most popular engine designs for HD motorcycles. Just maintainance work. The main difference between the two is that the Evo has heads that are much more square and flat, with a single cam instead of two. Additionally, it features an aluminum head for better heat dissipation than the Twin Cams cast iron design. If you are hard on the throttle maybe a little sooner than someone who is not so hard. Maybe just rebuild motor or replace or leave it alone and ride it? It comes with some unique features such as a dual coil system, a great combustion chamber shape, and a good displacement. In 2006, however, a new revisedDyna frame was introduced, and a 6-speed transmission debuted. It is also a bit cheaper to make ponies with from stock as a cam change will do wonders for a stocker and that'll only run you about $200. When the engines were run, oil came out any gasketed joint as well as the breather. WebOne of the most reliable ones from Harley Davidson is their twin cam 88 engines. Not many metrics that old still around. And in the Evo engines, the pump is external and the route runs through the filters and a series of gears. The Harley Davidson 88 sports the signature Twin Cam engine, manufactured by Harley from 1998 to 2017. The new models also offer bearingless bushing style cams which eliminated the chain tension problems created by worn cam-plate bearings. They provide your Harley Davidson with a secure, competent engine system thats reliable and strong. Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates. A former member of this board, MarKuda, had about 153,000 miles on his 03 Ultra when some bearings went out and took the oil pump and motor down. The automatic gearbox design on the Twin Cam makes it an easy ride for those who are still learning how to shift gears, and its acceleration is smoother than its twin-cylinder brother. [10], The early prototype Twin Cam engines had considerable trouble with the oiling system. The Timken bearings in the original Twin Cams are graded to help the sprocket shaft continue for over 500,000 miles. Thanks to all for responding to my thread! When you purchase through links on our site, we may earn an affiliate commission, which supports our community. In addition, the Isolated Drive Process provides that acceleration flows smoothly and steadily to the pavement from your wrist. The Evo uses two valves per cylinder instead of one, which helps improve airflow and combustion.

Of course, not every engine is perfect, and the Twin Cam 96 had some piston recoil issues with smoke blowing out of the air filter. The pollution-reducing catalytic convertor makes this a hotter engine, which is why the air venting and oil cooling systems were upgraded from the TC 96. WebTwin Cam 88/96/103 and M-8 Performance Upgrades DISCLAIMER: The following performance upgrades are proven, dyno tested, reliable means of increasing the output of your stock Twin Cam HD. It necessitates costly endurance assessment. So if you are someone who finds smoother vibrations to be boring then Twin Cams arent for you. It is the purchaser's responsibility to consider the suitability for their application. The last significant new Twin Cam bike, before the CAN BUS update, was the 2012 FLD Switchback, which was part Dyna and part touring bike. Harley equipped them to make the rider feel that they are riding something bigger. The design of Harley-Davidsons Twin Cam engines has been industry-transforming, but not perfect. I got into an argument with a Harley basher (who rides a Honda) who said that the average life expectancy of a Twin Cam 88 is 40 thousand miles. Each of them has two lobes. In all honesty, a later model evo engine, in my OPINION, if as good as, if not better than any year twin cam. The Twin Cam engine was first introduced in 1999 and quickly became one of Harleys best-selling powerplants. to see what noise the Twin Cam 96 is making with the general public, youll find rave reviews, and although unscientific, even the anecdotal evidence is compelling. The Twin Cam 88B engine was a counter-balanced Twin Cam 88 motor that was designed to fit Harley-Davidson Softail models. Overall, both engine designs offer excellent performance and reliability for Harley Davidson motorcycles. I've owned three Harley's and never had any engine (or trans) problems, but none of them have gone over 25K before I bought the next. I've 4 or 5 friends who ride Twin Cam with more then 100000 kms on it. One engine has 45 cubic inches (745 cm), while the 96 cubic inches (1550 cm). Why Harley Twin Cam 88 Is A Popular Engine? I bought a slightly slower 113" s&s evo and put in its place, no one has waited on me to fix it mid run, actually, other than oil changes, I haven't laid a wrench on it. Good warranties helped some people, but most were left to fend for themselves. Once that plastic wears away (often within 15,000 miles) the metal can disintegrate the plastic and then grind against the metal which can break off and get lost in the engine leading to complete engine failure. Transmission casing is attached directly to the engine.
In order to quiet things down (to meet government noise regulations), and improve the pushrod geometry, the single, central, gear driven cam was replaced by two cams, one at the bottom of each cylinder, and driven by chains. 17 How long does a Harley-Davidson engine last? engine the increase power and reliability. Lol. Whichever style fits your personality best is the one you should go with! Harley has done a good job designing them both to be reliable and fail-proof. For a better experience, please enable JavaScript in your browser before proceeding. I am talking about used bikes in general, you can pick up evos really cheap, an advantage, though you can pick 88 TCs up fairly cheap, people want 6 speed and 103 or 96". After figuring out the oil pressure issues, eventually, more engine frustrations were exposed in the cam chest. These are sandwiched between a pair of flywheels. Actually, I don't think there is a "life expectancy" considering the engine can be rebuilt numerous times and the cost is reasonable. The Twin Cam engines have some flaws. This engine allows greater horsepower. Also air-cooled. For a better experience, please enable JavaScript in your browser before proceeding. I tend toward Harleys because I keep machines for decades and nothing else has aftermarket parts support that is even close. I currently ride a Honda Shadow. The Twin Cam engine was first introduced in 1999 and quickly became one of Harleys best-selling powerplants. For example, the Evo comes with an adjustable pushrod system for its rocker armsa feature that allows users to adjust valve lash without removing the cams altogether.

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