103 vs 107 harley

Harley M8 vs Twin Cam. Which is better? Is the Twin Cam Harley better than Milwaukee 8? Or is the Harley Milwaukee 8 better than the Twin Cam? This video...

Shop Camshafts - https://www.jpcycles.com/motorcycle-camshafts?utm_source=youtube&utm_medium=description&utm_campaign=Chain_Drive_vs_Gear_Drive_Cams_:_Pro_Ti...About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...Cody's Comparisons: Episode 3.In this episode, Cody takes an in-depth look at the difference between the 2020 Harley-Davidson Softail Deluxe vs Heritage Clas...Review Comparativo entre os motores 107 vs 114MILWAUKEE-EIGHT 114A maior cilindrada em modelos de Touring H-D padrão. Você conta com 1.868 cc de força de ult...What are the main differences between Harley 103 and 107 engines? The primary differences are in displacement and power output. The 103 engine has a …New 2017 Harley touring models will be equipped with the Milwaukee-Eight 107 ci (1750 cc) motor. The CVO models will now be equipped with a 114 ci (1870 cc) motor.The eight-valve motor was a complete redesign with new cases, cylinders, heads, and flywheel. This motor is a cooler and quieter motor from Harley-Davidson, which were several of ...Aug 23, 2016 · The Milwaukee-Eight 107 accelerates 11 percent quicker 0-60 mph and 11 percent quicker 60-80 mph in top gear than the Twin Cam High Output 103. The Milwaukee-Eight 114 accelerates 8 percent quicker 0-60 and 12 percent quicker 60-80 than the Twin Cam 110. Improved Economy: Efficiency gained in Milwaukee-Eight air flow and combustion, including ...Apr 10, 2024 · The Harley 103 engine, also known as the Twin Cam 103, is a powerful engine model produced by Harley-Davidson. It’s popular among motorcycle enthusiasts for its solid performance and classic ...

Harley 103 Vs 107 Reliability. By M. Santana February 15, 2024. The Harley 103 and 107 engines both offer good reliability with proper maintenance. The 107, being newer, incorporates improved design elements that can enhance longevity. Harley-Davidson motorcycles carry a legacy of power and performance that extends to their engines, particularly…Harley Dyna vs. Softail: There is no confusion about which is more powerful than the other. ... Type: Milwaukee Eight 107 V-twin; Bore stroke: 3.937 x 4.374" ... Harley 103 Stage 4 vs. 110: Head to Head Comparison; Chopped vs. Razor Tour Pack: Which one is User-Friendly; Post navigation. Previous. Carlini Gangster Apes 14 vs. 16: How Do They ...110" Big Bore Kits. The Fuel Moto 110" Big Bore offers the biggest bolt on displacement available for H-D Twin Cam 96" and 103" motors, it features our 110 Extreme Duty Cylinders with special high tensile strength steel sleeves that drop on without case boring. This complete kit works on all 2007-Later Twin cam 96" and 103" motors, it delivers ...Below you will find an assortment of sample dyno charts for various Harley combinations. Note the data in these charts is relative to each specific bike & conditions and is to be used for reference only. ... 2017 M8 107″ Completely Stock vs Rushmore 103″ Stock 2017 M8 107″ Completely Stock Milwaukee-Eight™ 114" Models . 2017 FLHXSE 114 ...One of the biggest opportunities in the new space economy lies in taking the connectivity made possible by ever-growing communications satellite constellations and making that usef...Harley 103 Vs 107 Reliability. Harley Davidson is one of the most iconic motorcycle brands in the world, and they offer a wide range of powerful engines to choose from. Among their offerings are two popular models: the 103 and 107. While both are reliable choices for riders, there are some key differences between them that should be taken into ...When it comes to buying a Harley Davidson, you can save a lot of money by choosing a used motorcycle. Wondering where to find used Harley V-Rods for sale, Panhead Harleys for sale ...

The odds of buying the same cams are very slim to none unless you're buying harley cans. Most aftermarket cams will be way better anyway because the harley cams leave a lot on the table . 09 Mirage Orange Pearl ... The 103 HO in the Rushmore bike got you about an extra 5 hp, torque stayed roughly the same. This is from dyno charts from Fuel ...Reliability will be the same 103 vs 107. Power difference will be minimal from the bore size alone. Where you will see power gains is from the cam and headwork.67Duce. 8766 posts · Joined 2011. #3 · Jun 12, 2017. The 107 kits , with or W/O heads are a real nice wake up call for the 103's. I would also pick the Dyno-jet Power Vision tuner as part of the package along with a free flowing exhaust and intake / aircleaner if you don't already have those.Stage 2 involves all the stage 1 changes and adding to it a torque and power kit. This will cost you a bit more, around $1000- $1500. Lastly, stage 3 is double than stage 1, of course, because of the massive changes of modifications around $1500- $1800. All these costs exclude the labor cost.

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Considering Performance and Torque. The Vance & Hines FP4 is often recommended for its modern Bluetooth-enabled app technology, offering precise control over the fuel tuning. This tuner supports a wide range of Harley-Davidson models from 2007-2023, including those with the M8 107 engine.Description. The Fuel Moto 107" Big Bore is a complete kit with the absolute highest quality components, all of which have been extensively tested in house both on the dyno as well as in real world conditions to deliver top level performance. This kit works on all 2007-Current Twin cam 96" and 103" motors and delivers absolute top level ...2017 M8 107" Completely Stock vs Rushmore 103" Stock - Fuel Moto University. Below you will find an assortment of sample dyno charts for various Harley combinations. Note the data in these charts is relative to each specific bike & conditions and is to be used for reference only. Results can/will vary. Note: this is a fraction of the charts ...Related articles: > Harley 88 vs 107: An In-Depth Comparison > Harley 103 vs 107: Evolutionary Or Just A Step Backwards? > Harley 107 vs 114: Milwaukee 8 Worth The Hype? Yes and No > Harley 107 vs 114 vs 117: A Milwaukee Bound Shootout. Harley Davidson Milwaukee Eight Engine Reliabilitynew would be my choice also. just make sure it has the same cam as the rushmore 103's, and twin cooled. that is as sweet as the twin cam engines ever got. good price, and it is new. the difference between rebuilt and new is simple. the rebuilt has already been worn out once. not a fair statement in part, but there is some wisdom there. also the price on an hd new is pretty ok.:smileFind Screamin' Eagle Milwaukee-Eight Engine Stage IV Kit - 114CI or 117CI to 131CI 92500082 at Harley-Davidson.com. Free shipping on orders $50+ and free returns.

Harley-Davidson trikes are a great way to experience the open road and the freedom of the ride. Whether you’re looking for a new or used trike, there are plenty of benefits to owni...Common Harley 103 Engine Problems. The Harley 103 engine, like many engines, has its own set of common problems that owners and mechanics should be aware of. Here’s a detailed look at some of the issues: Related: Milwaukee 103 Vs 107 Engine. 1. Hot Start Problem. The hot start problem is a common issue faced by many Harley 103 engine …It starts at $17,349 and comes in eight color options. Powered by the air-cooled, 73ci Evolution V-twin, the Sportster Forty-Eight joins the Dark Custom ranks for 2016, and it gets better ...If you're going for more cubic inches, you might as well go for the biggest gain you can, unless you simply need to bore your jugs anyway. If you're getting new ones, go 110". Fuel Moto charges $899 for a 107" kit, and $999 for the 110". That's 10% more $$ for 75% more extra cubic inches assuming this is going on a 103.1. Bore Stock Jugs to 103", SE Pistons, Andrews or SE CAM for down low Torque, Heads done by Bean. 2. Bore Stock jugs to 107" go with the Fuel Moto Package which has …Specifically, the Milwaukee-Eight 107 accelerates faster, showing an 11 percent quicker sprint from 0-60 mph and a 11 percent quicker pace from 60-80 mph in top gear than the Twin Cam High Output 103. The Milwaukee-Eight 114 outperforms the Twin Cam 110 with an 8 percent faster acceleration from 0-60 mph and 12 percent quicker from 60-80 mph.Keep reading: > Harley 96 vs 103 > Harley 103 vs 107 > Harley 107 vs 114. Mechanical Problems. While mechanical problems found in Harley Davidsons can also fall into the fueling and electrical categories, I thought it best to separate this entirely as (in my head) it's a separate issue entirely.The new engine's capacity is clearly 107 cubic inches - that's 1753cc - and given that the engine is new there will be scope for much larger versions for future models. There's already talk of 117ci (1917cc) or 120ci (1966cc) versions for CVO models. The engine will debut in Harley's top Touring models, but expect it to spread to ...Harley Spark Plug Cross-Reference XL Sportster 1000 XL Sportster 900 Shovelhead 1975-1981 Shovelhead 1982-1984 Panhead/Shovel 1947-1974; H-D Standard : 4R5: 4R5

I wanted to make a video to compare both the 103CI Harley Davidson Twin Cam motor in the 2015 Road Glide against the new 107CI Milwaukee 8 motor in the 2018 ...

2-1-2 sounds pretty damned good, besides with late model Harley and FI, they don't say potato, potato, potato... anymore. But with the duals or power duals, real sounds come from both sides of the bike and I really get a ton of comments about how good it sounds. 103" w/Race Kit,Stage IV 117HP 111TQ.secrets harley davidson cvo 103 high mileage 103s v twin forum the harley 103 vs 107 engine showdown pit talks high output twin cam 103 vs milwaukee eight 107 r harley harley davidson 103 twin cam engine diagram dashfault engine assembly twin cam 103 harley davidson 103 cam selection harley davidson forums Table of Contents high output 103 ...First things first you seen it, we are gonna give away a free fat tire kit and get it install for you!!! Stay tuned for the next video to drop for all the de...The Twin Cam 88 engine set a high standard for reliability, which later engines built upon. Each subsequent engine size, from the 96 to 103, offered incremental increases in more torque, power, and general performance. Hydraulic tensioners, introduced in 2007, marked a significant improvement in engine longevity.In some cases, a well-tuned 103 with upgrades can closely compete with a stock 117, with initial advantage potentially going to the 103 but the 117 catching up in higher gears. 125. This Harley 103 vs 117 comparison is truly an unprecedented step in comparing the two biggest motors from Harley's Twin Cam and M8 series.What's the difference between the new Harley-Davidson Milwaukee-Eight engines?We compare the 107 and the 114 to find out.The results are interesting...What i...ProCharger (Kansas City) Company Headquarters. 14801 W. 114th Terrace. Lenexa, KS 66215. Phone: (913) 338-2886 Fax: (913) 338-2879. ProCharger (California) Branch OfficeI have narrowed my build down to two choices. 1. Bore Stock Jugs to 103", SE Pistons, Andrews or SE CAM for down low Torque, Heads done by Bean. 2. Bore Stock jugs to 107" go with the Fuel Moto Package which has woods 555 cams, Woods lifters, Wiseco Pistons, and heads done by bean.New 2017 Harley touring models will be equipped with the Milwaukee-Eight 107 ci (1750 cc) motor. The CVO models will now be equipped with a 114 ci (1870 cc) motor.The eight-valve motor was a complete redesign with new cases, cylinders, heads, and flywheel. This motor is a cooler and quieter motor from Harley-Davidson, which were several of ...About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...

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5496 posts · Joined 2016. #6 · Mar 13, 2022. It's not really "premium". Engines are built to run a particular octane rating. An engine designed to run 87 will run the same whether you put 87, 89, 91 or 93 octane in it. The only advantage of using 93 in an engine designed for 87 is that 93 octane typically has more detergents than 87 ...Features & Benefits. 4" Bore bolt on cylinder and piston kit uses a New Low Friction Ductile Cast Iron liner to improve thermal conductivity and improve performance. Largest big bore kit available without crankcase mods. Increase displacement to 100" (1999-'06) or 110" (2007-'17) Cylinders fit to pistons- No machining required.847 posts · Joined 2010. #1 · Jan 6, 2020. We tested 20 different cams from Andrews, Cycle-Rama, Feuling, Red Shift, Screamin Eagle, S&S, and Wood Performance in a 103 " Twin Cam engine. The full report and dyno charts can be found on the FM University website here > Knowledge Base - Fuel Moto University. Jamie Long / Fuel Moto USA.Oil Filter Removal Socket. A cheap and commonly used tool. The oil filter removal socket fits to a 1/4″ ratchet drive or T-bar. It pays to ensure your filter is clean before you use this tool as a dirt y filter is hard to grip. A bit of disc-brake cleaner and a cloth should do it.103 bore plus .010 = 3.885. 106 bore 3.927. 107 bore 3.938. You have plenty of meat left to bore. Like.Cam questions for 107 m8. Ready to do the cam on my 17 fltru with the 107 m8. I have 7,000 miles on it and ready for the bump in power. I ride solo 90% of the time and I ride aggressively. The other 10% of the time I am riding 2 up with the wife when we do our annual 1 week trip to South Dakota in the black hills.See what Harley has done with the new 107 with a quick 3rd gear 30MPH roll on to about 75 vs a 2014 Street Glide with the 103.Who will win?#1 · Feb 27, 2023. I’ve got a 103 that I’m sending out to get punched out to a 107 along with getting the heads done by Hammer Performance. My question is, how big of a difference would the 103 vs 107 be with the head work? I’ll have the heads done regardless but I was considering staying with the 103 to stay on the safe side as far as reliability.They ran a 2014 Heritage with a 103/6 speed, stage 1 and pipes, made 78hp & 95ft/lbs. Basically same combo as mine without the cams, waiting to see what mine does, should be in the 90's for hp and 105-110 torque. ... V-Twin Harley Davidson forum. Discussion on V-Twin Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster ... ….

I think the 88" is the only one out of the 3 that'll match up to the 5spd trans primary covers. SCHMIDTY said: Wonder if the OP meant 95" or 96". 95" is a big bore 88" and that would work with his 5spd. 103" is a big bore 96" and would not fit the 5spd. The 6spd touring model engines have internal oil lines to the trans case.I found a 2016 Street Glide with only 2k miles on it for $15k, and I'm trying to figure out how the Milwaukee Eight 107 that I just rode compares to the Twin Cam 103 engine that is on …In previous tests, this engine has generated 78.5 horsepower at 5,000 rpm, and 98.4 lb-ft of torque at 3,800. The Deluxe returned an impressive 46.7 mpg, the best in our test. 2014 Harley-Davidson ...Apr 21, 2012 · Yes, bore the 96" cylinders. Heat, totally depends on the tune, regardless of 103" vs 107". My 107" runs as cool or cooler than the 103" I had and there is no comparison to the dealer built/"tuned" oven 103" that I bought the bike with. That engine retained the O2 sensors in closed loop and had terrible tuning and heated profoundly.First things first you seen it, we are gonna give away a free fat tire kit and get it install for you!!! Stay tuned for the next video to drop for all the de...Logged. Re: 96 vs 103 Heads for 107 Build. December 21, 2016, 05:49:02 AM #7. Thanks guys. I realize the heads are the same port/chamber, but the 103's do have the ACR's. I was going to target around 10.2:1 / 190 CCP if I use the 6's and build a 107.In this shootout we tested an assortment of bolt in camshafts from various manufacturers in the Harley Davidson Twin Cam 103 engine. Our test bike was a 2012 Dyna Switchback equipped with a FM AC/DC Stage 1 air cleaner, E-Series 2/1 exhaust, and each set of cams was fully tuned with a Dynojet Power Vision in the Fuel Moto Dynojet 250i dynamometer test cell.Dec 26, 2016. #5. The 57 cams need compression around 10:1 or a bit better, like 10.2. Same profile at the 37 but with more lift. Without compression and head work in a 103" motor you can expect 95+HP and 100+TQ depending on pipe and tune. Not the best cam choice for a stock or Stage I motor. The 48 cams or the TTS 100 would be better choices IMHO.He recently took parts from a 2007 Road King and 2015 Street Glide to build a customer a Harley-Davidson Twin Cam 107cid engine. By Greg Jones. Greg Jones is Content Director and Editor of Engine Builder Magazine. Published: Dec 19, 2017. At just 23 years old, Marty Smestad became one of the youngest people ever to reach Harley-Davidson's ...One of the biggest opportunities in the new space economy lies in taking the connectivity made possible by ever-growing communications satellite constellations and making that usef... 103 vs 107 harley, Panhead. Shovelhead. Knucklehead. Evo. 103, 107, 114… These might all sound like random words and numbers to the uninitiated, but for those that recognize the terminology, they know each of these as milestones in the evolution and lifespan of motors that have been featured in Harley-Davidson motorcycles., Harley-Davidson. A guide to motorcycle gas mileage (MPG and L/100km) and fuel economy. SEE OUR NEW AND IMPROVED MOTORCYCLE FUEL ECOMONY GUIDE 1934 to Today's Bikes. FLHTCUI Ultra Classic Electra Glide 30th Anniv. Edition. Source Legend: M - Manufacturer; O - Owner Reported; P - Publication. SEE OUR NEW AND IMPROVED MOTORCYCLE FUEL ..., 847 posts · Joined 2010. #1 · Jan 6, 2020. We tested 20 different cams from Andrews, Cycle-Rama, Feuling, Red Shift, Screamin Eagle, S&S, and Wood Performance in a 103 " Twin Cam engine. The full report and dyno charts can be found on the FM University website here > Knowledge Base - Fuel Moto University. Jamie Long / Fuel Moto USA., Between Harley 88, 107, 110, and 114, the M8 engine of 114 is definitely Harley’s strongest contender thus far. Simplistic interfaces with complex inner workings – that’s just how Harley engines roll. It’s possible to resolve general heating issues by changing the oil or cleaning the oil pump., Nobody says "no" to more torque and horsepower. Screamin' Eagle components are the key to greater acceleration, increased passing muscle, & more of that rip roaring raw exhaust note that makes power more than a little addicting. So what are Harley-Davidson Screamin' Eagle Stage Kits and how can they help improve your ride?, Very happy with my 107 build. You can see the details in my signature. Current bikes in the stable: 2009 Street Glide. - 107ci, stage III heads, D&D Fatcat exhaust, Andrews 54 cam, TTS, 108hp 122tq. 2003 Heritage Softail Classic. - 95ci, stage III heads, RB LSR exhaust, S&S 510 cams, 100hp 102tq., Nov 23, 2023 · A Breakdown of Harley Engines By Year: An Evolutionary Timeline. 1. The Early Days (1903-1911) The journey of Harley-Davidson motors began in Milwaukee, Wisconsin, where the Harley family handcrafted flathead engines and introduced them to the world by fitting them to bicycles. The single-cylinder model in 1903, derived from the De Dion-Bouton ..., Harley Davidson Forums. 107 vs 110 kit. Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here. Jug = Cylinder, Spigot = The part of the cylinder that extends down into the case., The exhaust and intake flow capacity is increased by 50 percent over the Twin Cam models. Although weighing the same as its predecessor, both models of the Milwaukee-Eight increase in acceleration by 10% (0-60 for the 107 vs the 103) and 8% (0-60 for the 114 vs. the 110). Fuel economy is also increased, with percentages varying for engine and ..., The best way to find original equipment manufacturer parts numbers for Harley-Davidson motorcycles is to visit Harley-Davidson.com, click For the Bike from the main navigation bar,..., I’ve had 88’s 96’s 103’s and a 110SE. ... A 4 valve head will flow more air and a Harley motor, hell any motor, is just an air pump. ... I don't find there is enough difference between the stock 107" and a stock 114" M8 to tell by the seat of the pants. 2018 FLTRXS. Save Share. Like. kiwidave., Only show this user. #10 · Jul 7, 2012. 100/100 is super easy on a 103"er,105/110 is also very easy and still be a VERY reliable & ride.getting into the 110+ isnt a big deal,but gets into some issues that most riders dont want to deal with.my suggestions: set compresion @ 10.25-1. 1.900 street port heads., Dec 26, 2016. #5. The 57 cams need compression around 10:1 or a bit better, like 10.2. Same profile at the 37 but with more lift. Without compression and head work in a 103" motor you can expect 95+HP and 100+TQ depending on pipe and tune. Not the best cam choice for a stock or Stage I motor. The 48 cams or the TTS 100 would be better choices IMHO., Apr 29, 2015. #3. The High Output Twin Cam 103 gets more cam lift and a better-flowing airbox for more torque compared to a standard Twin Cam 103. H-D claims 105.5 lb-ft of peak torque at 3,750 rpm while 2013 models were rated 100 lb-ft of torque at 3,250 rpm. It's now standard on Road Kings, Street Glides, Street Glide Specials, and Electra ..., 2010 FLTRX Wimmer Better Sucker,FM 107 kit with Wood's 777 cams,V&H propipe, nitrous. 2004 Dyna Lowrider Harley Heavy Breather,Stage 1,Screaming Eagle mufflers.1996 FXDS-CONV S&S E.Screaming Eagle ignition,V&H Short shots. 1978 Strokershovel Lowrider 100 inches. 1974 Suzuki GT750 Lemans (Water Buffalo), Street Performance Kit from Screamin’ Eagle price is $1,819.95 in Harley 103 stage 4. Upgrade your 110 cubic inch Original Equipment cylinder head to a fast Equipment cylinder head for optimal torque and performance- Harley 110 stage 4 will cost $2169.95. This would be a definite plus for the 103 since the price is considerably lower., Harley Davidson trikes are a great way to experience the open road in style. Whether you’re looking for a classic ride or a modern machine, you can find a used Harley trike that fi..., See what Harley has done with the new 107 with a quick 3rd gear 30MPH roll on to about 75 vs a 2014 Street Glide with the 103.Who will win?, Considering Performance and Torque. The Vance & Hines FP4 is often recommended for its modern Bluetooth-enabled app technology, offering precise control over the fuel tuning. This tuner supports a wide range of Harley-Davidson models from 2007-2023, including those with the M8 107 engine., 16 vs 17, 103 vs 107. ... 08 FLTR candy red sunglo with 2015 103 HO, V&H Dresser Duals with Monster Rounds, Thunder Max tuner, Willy Shiny Wheels and Forks and a bunch of other stuff. ... 12 inch 'Freedom' shield, Mustang seat, Harley tour pak, Advanblack lowers, Motolights, rear crash bars, Headset plug-in, Ciro footpegs, Black headlamp trim ..., 144K views 7 years ago. 2016 Harley Davidson 103 VS 2017 HD Milwaukee 8 Dyno Run This video will you show you a stock comparison between the Twin Cam 103 and the new 107 Milwaukee 8. Dyno runs on ..., Pricing is $3295. For additional information, visit Zipper's Performance Products or call 410-579-2828. Zipper's Performance Products has released the Muscle 107 kit for 2007-up Harley ..., 487 posts · Joined 2012. #4 · Dec 4, 2012. Not at the high miles you ask, but I have 47,000 miles on my 20 month old 2011 Road King Classic, 103 engine is perfect and has had no problems or concern. I service at 4,000 miles using 20/50 Valvoline synthetic. Mine: Road King Classic, Ultra Limited, Forty Eight., The 114s have better high rev performance over the 107, but that's about it. The other difference to consider is the 107 can only be bored up to 114. and all the upgrades for the 107 are based on the 114 Kit. Where as the 114 can take all of those upgrades, but also can be upgraded to the 117., Re: HD Breakout 103 v 114. #7 by ZooTech » Fri Feb 14, 2020 7:44 am. The 10% power increase for the 114 is as compared to the old 110. The difference between the 103 and 114 is about the difference between The Pony Express and Email. The 8-valve Milwaukee Eight can actually breathe, so the rev limiter doesn't kick in just above idle like the ..., Compared to the Twin Cam High Output 103, the Milwaukee Eight 107 accelerates faster from 0-60 mph by 11 percent. Equivalent to about two to three bike lengths, and 11 percent faster from 60-80 mph in high gear, which is about one to two bike lengths. However, 0-60 mph acceleration is 8 percent faster on the Milwaukee-Eight 114, 60-80 mph ..., Buying a used Harley Trike is an exciting experience, but it can also be daunting. With so many options available, it’s important to know what to look for when shopping for a pre-o..., I get asked nearly everyday about the Harley-Davidson Milwaukee 8 motor, why it's called that, how does it perform, why is it so special. Well here you go., This is the exhaustive guide for the years of Harley Davidson motorcycles that you need to avoid - or find yourself in a world of dealer fees and misery. The Seasoned Wrench. Search. Home; Categories ... Read more: > Harley 96 vs 103 > Harley 103 vs 107 > Harley 107 vs 114 > ..., Harley-Davidson. A guide to motorcycle gas mileage (MPG and L/100km) and fuel economy. SEE OUR NEW AND IMPROVED MOTORCYCLE FUEL ECOMONY GUIDE 1934 to Today's Bikes. FLHTCUI Ultra Classic Electra Glide 30th Anniv. Edition. Source Legend: M - Manufacturer; O - Owner Reported; P - Publication. SEE OUR NEW AND IMPROVED MOTORCYCLE FUEL ..., My 103 does NOT like less than 2K rpm in about any situation unless perhaps down a long hill. ... a 103 vs a m8 107 vs m8 131 will all have some differences at the top and bottom end of gear to speed/rpm as well. ... Harley Davidson Pan America Forum 3K+ members. Home. Forums. General Forum. General ..., 3250. Compression ratio. 10.0:1. 10.5:1. Fuel consumption (combined highway/city) 45 mpg. 43 mpg. All this assumes bikes in stock form. Looks like the two advantages are the 107 gets slightly better MPG, and models equipped with the 107 tend to be less expensive so you have more money to spend on modifications., FrankieB. 809 posts · Joined 2011. #2 · Nov 19, 2015. Yes you can bore stock cylinders to 107". The advantage of a kit is shorter down time, but more money. I wouldn't spend the money to go from a 103 to a 107 unless it was a have to case, the bang for the buck will not be there. 06 RK. 11 RGU.