Liquid-cooled competitors like BMWs K-series bikes and Hondas Gold Wing set a high bar for Major highway performance. My engine does not consume any oil, the exhaust is clean and dry, it runs great and I think my noises are normal. The Twin Cams dynasty came to a close in 2016, when the company replaced it with the Milwaukee-Eight multi-valve dual-cooled engine, a whole new topic. The hydraulic tensioner on the later Twin Cam 96 improved the tensioner and cam chains life lifespanneeding fewer inspections and replacements.
Discussion on V-Twin Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster, and more. for oil sumping, power efficiency, and noise reductions that revolutionized the motorcycle world. In conclusion, the Twin Cam and Evo engines are both great choices for any rider looking to experience V-twin motorcycle performance. One per cylinder, each with 2 lobes. Webbettys yorkshire curd tart recipe; Profil. It is said that of the hundreds of parts in each motor, just 18 part numbers were shared between the Twin Cam and the motor it replaced. Here, some sparks are wasted since the ignition uses a single coil. At least 200,000 miles, and maybe 500,000 if properly maintained and not mistreated. The Evo engine is a liquid-cooled, rubber-mounted v-twin with two valves per cylinder. Overall, both engine designs offer excellent performance and reliability for Harley Davidson motorcycles. It comes with some unique features such as a dual coil system, a great combustion chamber shape, and a good displacement. We know that the lesser the cam, the higher the pushrod angle. 2003 2006: Improved But Suspect Years of the Twin Cam, 2007 2009: Good Years for the Twin Cam 96, 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. In the motorcycle world, there is no question that Harley-Davidson reigns supreme. Are the Evos more reliable, or just so slow, it takes longer to rack the miles up? Ask him how many 40 year old hondas are still on the road. Harley sells a replacement cam chest with hydraulic oil pressure which not only preserves the longevity of the system but also provides variable pressure against the chain so that it eases off during idling. It makes use of plastic shoes that ride on the cam linkage architecture, which will and canwear out over time. Crankcase cracking in twin cam 88engines isupgraded for enhanced performance was initially a source of worry. This means that if you do have any problems with your Harley, you should be able to fix them without too much difficulty. 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. 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. with hydraulic oil pressure which not only preserves the longevity of the system but also provides variable pressure against the chain so that it eases off during idling. 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. 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. Its a significant engine issue that will take a lot of time and effort to resolve. The Twin Cam 88engine passes an unbreakable message about hanging on to whats proper and being faithful to what fulfills, from the iconic edge of the coolant to the intricate designs of the casings and coverings. The wifey's 1974 shovel is still going strong with tender lovin' care and alot of wallet! Internal twin-gerotor. 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. Haven't had to change a cam tensioner yet. However, both the Twin Cam and Evolution engines share certain characteristics with nearly all previous Harley-Davidson engines: they have two cylinders arranged in a V configuration at 45, are air-cooled (some touring models use liquid cooling for the heads), and activate valves via pushrods. WebIn terms of mechanical technology, the Twin Cams have better braking, sealed wheel bearing, and a better rear shock absorption system. Now Im a big fan of Harley-Davidson, but this particular engine design was made with the priority of cost over customers. Harley-Davidson was changing directions completely. Through the two cam system, Harley was able to introduce bigger and powerful motors. So compared to yours, you have low mileage and everything sounds good and works fine, I really wouldn't worry too much about the mileage. It is a single-cam design that has been improved over the years to increase power and efficiency. How Fast Are Harley Davidson Motorcycles? True, you cannot make as many cubic inches as readilly as with a TC but you can hit 88-98 inches, for not a lot more cash outlay than a cam change on a TC motor. The cam drive is a silent chain. 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. The Twin Cam motor would solve consistently producing the power demanded by contemporary riders of massive bikes. 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. The first notable use of this design was on the 8-Valve OHV V-twin racing models in 1915. The only thing you should have to be on the lookout for anytime soon is the inner primary bearing. If youre an old school Harley guy who loves the feel of the muscle and the shake then this is your perfect match. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. It necessitates costly endurance assessment. V-Twin Harley Davidson forum. The two engines have some key similarities: hydraulic lifters and four valves per cylinder. 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. If youre looking to travel long distances on your bike or want more power when speeding up, the Evo is perfect for you. Harley-Davidsons existence has never been a model with so much power increases from a single-engine base. The Twin Cam also has better fuel economy than the Evo, but this is offset by its higher purchase price. 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). This is because they have a simpler structure and anatomy that is moderately easy to workaround.
There were delays because of problems with oil leaks and scavenging, as well as a battle between the styling and engineering departments over adding an external oil cooler or going with a substantial increase in the fins on the motor. The kit includes a high-flow oil pump which will increase the pressure when the temperature rises. These include the Softail, Touring, Dyna, and Sportster families of motorcycles. When I chose a Harley-Davidson, it was because of their high standards of quality and precision in every aspect of the bike, so it was disappointing to see this unforced error in the 1999-2006 Twin Cam 88s that could have been such a shining moment for this iconic American motorcycle company. When the engines were run, oil came out any gasketed joint as well as the breather. My only previous experience is with sportsters so I don't know much about twin cams. In terms of performance, both engines are powerful and reliable. Leave em stock (cept for tensioners) & they'll hang in there for the long run ! They didnt even have to compromise the reliability of the engine for this improvement. More Area Equals More Reliability The ignition system of an engine is normally fairly simple. Had a 99 FLHR twin cam. Though the Switchback is built on the Dyna frame, it carries the FL model prefix of a touring bike, plus a small windscreen, and factory hard bags. Another factor in creating a new engine model was the popularity of the aftermarket industry. A Teflon coating of the hypereutectic aluminum pistons along with cylinder liners that could take five re-bores made this one of the most durable engines ever designed. The goals were to increase power and reliability,decrease noise and emissions, and retain the traditional layout and look. Initial Softail models for 2000 powered by the Twin Cam 88B include the Heritage Softail, Springer Softail, Fat Boy, Night Train, Softail Deuce, Standard, and Custom. (1,801 cc). VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Many users installed aftermarket gear driven replacements to increase timing accuracy. The architecture of the actual product is shoddy. Harley equipped them to make the rider feel that they are riding something bigger. There were not any major upgrades or updates to the Harley lineup this year, but there was major work from the styling department in two new, wild, Softail models. Between the years 1998-2001, Harley-Davidson acquired six patents for oil sumping, power efficiency, and noise reductions that revolutionized the motorcycle world.
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We know that the lesser the cam, the higher the pushrod angle. 2003 2006: Improved But Suspect Years of the Twin Cam, 2007 2009: Good Years for the Twin Cam 96, 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. In the motorcycle world, there is no question that Harley-Davidson reigns supreme. Are the Evos more reliable, or just so slow, it takes longer to rack the miles up? Ask him how many 40 year old hondas are still on the road. Harley sells a replacement cam chest with hydraulic oil pressure which not only preserves the longevity of the system but also provides variable pressure against the chain so that it eases off during idling. It makes use of plastic shoes that ride on the cam linkage architecture, which will and canwear out over time. Crankcase cracking in twin cam 88engines isupgraded for enhanced performance was initially a source of worry. This means that if you do have any problems with your Harley, you should be able to fix them without too much difficulty. 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. 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. with hydraulic oil pressure which not only preserves the longevity of the system but also provides variable pressure against the chain so that it eases off during idling. 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. 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. Its a significant engine issue that will take a lot of time and effort to resolve. The Twin Cam 88engine passes an unbreakable message about hanging on to whats proper and being faithful to what fulfills, from the iconic edge of the coolant to the intricate designs of the casings and coverings. 
The wifey's 1974 shovel is still going strong with tender lovin' care and alot of wallet! Internal twin-gerotor. 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. Haven't had to change a cam tensioner yet. However, both the Twin Cam and Evolution engines share certain characteristics with nearly all previous Harley-Davidson engines: they have two cylinders arranged in a V configuration at 45, are air-cooled (some touring models use liquid cooling for the heads), and activate valves via pushrods. WebIn terms of mechanical technology, the Twin Cams have better braking, sealed wheel bearing, and a better rear shock absorption system. Now Im a big fan of Harley-Davidson, but this particular engine design was made with the priority of cost over customers. Harley-Davidson was changing directions completely. Through the two cam system, Harley was able to introduce bigger and powerful motors. So compared to yours, you have low mileage and everything sounds good and works fine, I really wouldn't worry too much about the mileage. It is a single-cam design that has been improved over the years to increase power and efficiency. How Fast Are Harley Davidson Motorcycles? True, you cannot make as many cubic inches as readilly as with a TC but you can hit 88-98 inches, for not a lot more cash outlay than a cam change on a TC motor. The cam drive is a silent chain. 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. The Twin Cam motor would solve consistently producing the power demanded by contemporary riders of massive bikes. 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. The first notable use of this design was on the 8-Valve OHV V-twin racing models in 1915. The only thing you should have to be on the lookout for anytime soon is the inner primary bearing. If youre an old school Harley guy who loves the feel of the muscle and the shake then this is your perfect match. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. It necessitates costly endurance assessment. V-Twin Harley Davidson forum. The two engines have some key similarities: hydraulic lifters and four valves per cylinder. 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. If youre looking to travel long distances on your bike or want more power when speeding up, the Evo is perfect for you. Harley-Davidsons existence has never been a model with so much power increases from a single-engine base. The Twin Cam also has better fuel economy than the Evo, but this is offset by its higher purchase price. 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). This is because they have a simpler structure and anatomy that is moderately easy to workaround. 
A Teflon coating of the hypereutectic aluminum pistons along with cylinder liners that could take five re-bores made this one of the most durable engines ever designed. The goals were to increase power and reliability,decrease noise and emissions, and retain the traditional layout and look. Initial Softail models for 2000 powered by the Twin Cam 88B include the Heritage Softail, Springer Softail, Fat Boy, Night Train, Softail Deuce, Standard, and Custom. (1,801 cc). 
VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Many users installed aftermarket gear driven replacements to increase timing accuracy. The architecture of the actual product is shoddy. Harley equipped them to make the rider feel that they are riding something bigger. There were not any major upgrades or updates to the Harley lineup this year, but there was major work from the styling department in two new, wild, Softail models. Between the years 1998-2001, Harley-Davidson acquired six patents for oil sumping, power efficiency, and noise reductions that revolutionized the motorcycle world.