Harley 120r engine problems. • 4-5/8" stroke premium forged flywheels.

Harley 120r engine problems Visitez eBay pour une grande sélection de Harley Davidson 120r Engine. A few days ago it started making some weird noise so I took it to the dealer that installed the motor and he heard it from inside the shop. At 12,000 miles I heard some funny noises. One of the best places on Al Gores interweb. These are of course the piston and connecting rod. Harley-Davidson photo. Jump to Latest 3. no warranty on the 120r ! The Reman and new engines come with warranties and I believe those warranties kick in as soon as ya take delivery. However, it is also infamous for certain mechanical issues. Jul 28, 2012 · It's getting down to decision time. 5 dome pistons and have tman port the heads with bigger valves. Oct 29, 2012 · I basically dumbed down the performance a little to give it better street manners - i. Sep 15, 2013 · My issue with my 2012 is the crate motors are limited I believe. In this article, we will dive into these problems and potential solutions for the challenges faced by users of the Harley 120R engine. 060" big-bore cylinders. Just wondering if anyone else has encountered this, or if I possibly have a 'unique' problem. 37951-98). Feb 5, 2013 · Yup, you guys are right. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Dec 18, 2012 · You're first problem is that thunder header, it is severely restricting your engine. It is made available to Harley dealers for their racing customers wishing to compete on the racetrack with an affordable high-performance race engine. . In this article, we will explore these problems and provide a comprehensive analysis of the concerns associated with the 120ST model. Using lower-grade fuel can negatively impact performance and potentially damage the engine. Dec 18, 2018 · Brian explains what parts we will be using to build the 120R Engine here at Denney's Harley-Davidson. Aug 4, 2010 · engine is capable of producing a reliable 135+ horsepower at the rear wheel. 5K views 9 replies 6 participants last post by Harley-Racer May 12, 2013 Feb 17, 2011 · 2005 rk with 120R crate engine bolt in specs 2005 RK stock 120R engine Sampson 1 3/4 t dual pipes crusher mellows HPI 58 t/b HPI high pressure reg 6. We have a great online selection at the lowest prices with Fast & Free shipping on many items! May 13, 2023 · So let’s go in depth about the Harley 103 engine problem symptoms and their potential fixes. I had one on my old 120" and changing to a boarzilla gained me 12hp What kind of bike is this? The 662-1 intake closes too early at 45 degrees for high HP numbers. Here, we break down the pros and cons of this iconic engine. Enjoyment of nice weather. 2 injectors bandit clutch zipper high flow cleaner tts tuner. Yes he rides the Hell out of it but pinging, missing, breaking up at certain RPMs. The way I figure it, cost ways it's pretty much a wash. Engine Oil Consumption. To date, I have spent $29,000 at my local Harley shop including the original purchase of my Road King ($14,400). 3 injectors. Either the 120r or there is a company (star racing) that sets up the s&s124" for the 07 up twins. I figured that my mechanical abilities are better suited for a swap than they are for opening up a perfectly good engine. when I called Harley Davidson USA FLTRSE3, 120R engine, went into "limp mode" won't let me have throttle, Less than 10k on the engine, 60k on bike. The oil level is right. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Dec 31, 2018 · 120R cam is Harley-Davidspn factory 266E which has 0. Mar 16, 2015 · I have no intention of ever having hope of getting any of the money I put into my Harley back out of it. 125” making your motor a 124”. 2009 Nov 9, 2010 · This fully assembled Harley-Davidson Engine named the SE 120R (120 stands for cubic inch and letter R for Race)) is designed only for off-road and racing use. Get the best deals for harley davidson 120r engine at eBay. Mar 3, 2025 · I have the HD oil cooler on my bike, and it still drops down quite a bit when she heats up. This performance engine, introduced in 2011, offers powerful capabilities but comes with its own set of challenges. This likely allows the engine to be not so restricted by EPA regs. :thumb I put about 30,000 problem free miles on my 120r. It may have been outlawed by EPA a couple years ago when the 120R engine was outlawed. It has the SE266 CAM, SE Roller Rockers, D&D Boarzilla Exhaust, and Timken Bearings. I haven't even received the notification letter yet. S&S would be a good start as lot of the engine builders use their cranks or flywheels. . 3 days ago · A dealership would have no problem throwing a crank back into an engine with 0. 95). I have it sold for 3k so that cuts the cost to almost half with me doing the labor. We strongly urge you to take the affected motorcycle to an authorized Harley-Davidson dealer to have the appropriate service performed as soon as possible Unauthorised | Harley-Davidson SIP H-D Service Information Portal H-D SIP Sep 27, 2016 · My engine has gone out on my LR S and will be replaced by Harley at their expense. Unique piston oilers for stroker clearances. 625 crankshaft from S&S, etc. New motors are nice, but I wouldn't have a problem buying a nice light Dyna with one of these babies stuffed in there. The cost for either would be about the same considering I would probably have to pay for labor to have the Stage IV kit installed. « on: August 27, 2008, 03:18:33 PM » He said they have the new engine kit in that takes care of the 110 engine problems and I can bring it in any time. Thanks. 2 days ago · A dealership would have no problem throwing a crank back into an engine with 0. Doesn't matter how big or small your engine is they don't like too much heat! Feb 20, 2025 · All around the best designed plug for Harley-Davidson 120R enthusiasts looking for a replacement spark plug; the latest technology used in our racing series spark plug allows for increased fuel consumption by as much as 5% by ensuring reliable combustion events all while delivering smooth engine operation, additional Power Output and driving Apr 17, 2011 · The 120R engines pump out about 130/130 on avg in stock form. Many guys have tried a bunch of cams and most are giving up hp for the tq. Yep, it was the piston slapping around. It seems that I might have a choice to go back with the same SE110 or the 120ST. 4 Common Harley Davidson 103 Engine Problems. 2. However, some riders have reported problems such as overheating, a decrease in gas mileage, and premature wear in extreme cases. Related: Harley 117 Engine Problems . 2 days ago · Is it really true that a 103 engine will run longer with out giving trouble and a better engine then the 110 . Why it matters Harley itself is recommending a few more details to make the most of the new Oct 28, 2023 · Top 7 Harley 103 Engine Performance Upgrades To Get More Power; 4 Common Harley Davidson Twin Cooled Engine Problems & Solutions 2024; Top 10 Best Cam Upgrade For Harley 103 Engine 2024 – Guide; Harley Davidson LED Turn Signal Problems & Solutions: Harley Turn Signal Module Replacement Apr 8, 2014 · I've got almost 6000 miles on my 2013 Street Glide that I had the 120R put in at 3 miles. 3. 30 PSI on the highway, 20-25 when in traffic. My bike is a '07 Street Glide. I see a lot of guys hating on this engine. I was thinking about the 120R, but not having any warranty is an issue. According to HD headquarters, the acceptable amount of oil usage after an engine break-in for a Harley 107 is a quart of oil every 1,000—1,500 miles. it never was a valve train noise like some of the noisier aggressive ramps sound. Jun 4, 2012 · By the time you surround the 120R with all needed to expose that, to include a clutch up-grade, throttle body, roller rocker arms, bring the compression up to properly support that 266 cam, etc, the true value in what you have, is bore your cylinders to 107", have your existing cylinder heads re-worked, along with a cam change to suit your riding needs. I think I have narrowed my choice down to S&S 625 or T-man 650. Depending on your mechanical abilities do the work yourself sending out the machining portions of the build to qualified shops or the whole engine for that matter. May 5, 2015 · For best performance results, Harley-Davidson recommends combining this engine with a Screamin’ Eagle 58mm High-Flow Air Cleaner (P/N 29400222, $159. Jan 11, 2024 · Harley Twin Cam Engine: Common Problems and Solutions Harley Twin Cam Engine: A Brief Overview The Harley Twin Cam engine, introduced in 1999, marked a significant evolution in Harley-Davidson’s long-standing legacy of heavyweight motorcycles. Apr 4, 2011 · 120R Slight Problem. Ahtsham Younas He loves to ride motorcycles and learn the mechanical process behind the motorcycles. The original cams were the SE 266E cams that developed their HP/TQ in the upper rpm range were I do not normally ride. Rod length is different on the stock Harley 120 and 103 also. Shop will do a complete tear down tomorrow to see if we can salvage anything but its either bad news or really bad news. I could do This comprehensive guide will dissect the 120R engine specs, offering practical examples, helpful tips, and answers to your burning questions. Feb 27, 2015 · Click "continue reading" to read more about Harley-Davidson's new Screamin' Eagle 120 engine. The local HD mechanic thought it would be an oil sending unit, which I replaced. May 17, 2013 · 2010, FLTRX W/ SE 120R. Let's dive in! What Makes the 120R Engine Tick? The Milwaukee-Eight 120R engine, often found in high-performance Harley-Davidson models like the CVO and certain limited-edition bikes, is a powerhouse. The only thing I plan to do performance wise is a tuner and exhaust. We have two box stock engines running around PHX/ Tucson without any Mar 18, 2014 · As mentioned these engines are set up for "closed circuit" application, not for public street use. There is no engine knock or any other signs of trouble. You need something like the 662-2 or the S&S640 is an awesome cam for HP. Screamin Eagle performance inner cam bearings. Because I know people will ask, I have been running M1 15-50 syn, and the bike was properly tuned by Doc. Many combinations can be used. ) Nov 9, 2010 · This fully assembled Harley-Davidson Engine named the SE 120R (120 stands for cubic inch and letter R for Race)) is designed only for off-road and racing use. Being a gear head I put the HD parade fan on it and boosted my oil pressure. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Aug 10, 2022 · Common Problems Found in the Screaming Eagle 110 Engine. However, where it goes is unclear and beyond most owners. 00) from Harley-Davidson Genuine Motor Parts and Accessories. it wasn't too bad ever,I just always though if I pulled the +30 P/R's and set them deeper it would quiet it down a little. Dec 3, 2011 · Starting with the '06 Dyna and '07 Touring models the "B" engines have external oil lines , "A" engines have internal oil lines . Jun 16, 2011 · Installed the screaming eagle 120R Kit(not crate) last fall into my 09 street glide. Here's the problem: cold start- engine will not pull through compression with the first push of the start button, sometimes not the second either. 800, increasing the flow and velocity of the head. Result: one rear cylinder roller-lifter collapsed (the bearings in the roller itself), which caused the lifter to drop enough to ride directly on the cam lobe (which ruined the SE264 cam) and a slightly bent chrome-moly push rod. Need to talk to some one that does this. 9 @ 122 mph 3rd ever pass on this bike with a wheelstand . One major factor is probably because of the "Race Only" definition that the 120R is. This is my review as a touring platform after 5K of daily riding The Harley-Davidson Screaming Eagle 120ST engine is known for its raw power and high-performance capabilities. Pros of the Harley Davidson 120R Engine. High Volume Oil Pump. • 4-5/8" stroke premium forged flywheels. it was more of a sewing machine noise in the Oct 13, 2010 · engine is capable of producing a reliable 135+ horsepower at the rear wheel Hand assembled alongside Harley-Davidson’s production Twin Cam engines at the Pilgrim Road Engine Plant in Milwaukee, these race-use engines feature only the finest Screamin’ Eagle components: • 4. 120R cam cover and head medallions. Drawing from a reservoir of hands-on experience and factual data , we’ll tackle the perplexing questions and aim to demystify complex jargon. Here are some of the most commonly reported problems: Most Common Failure Point (Compensator Problems) Well, worst case scenario happened last weekend. Jan 24, 2012 · As for a box stock engine they do run very well. P/N 19863-11 96"A engine fits '07 - '11 Dyna models . Follow the procedures in the ENGINE: SUBASSEMBLY SERVICE AND REPAIR, TOP END/ CYLINDER/ UPPER CONNECTING ROD sections of the service manual for inspection of parts. 37000121) and diaphragm spring (Part No. There is a limit to how fast these two relatively heavy parts can be yanked around. The conventional engineering with old designs and technology, the Harley 103 engine generates some issues which need tending before it becomes too late. Mar 22, 2012 · For the 2011 model year, Harley wowed performance enthusiasts when it announced the introduction of its new 120ci Screamin’ Eagle (SE) Pro 120R engine. May 19, 2013 · Personally I think the 120R is a much better product than the SE 110 and not just because I own one. Harley Davidson 120r crate engine. 00 new . Never any problems at all. Previous topic - Next topic. If you are new, why not mosey on over to the New Member section and tell us a little bit about yourself and your bike. & the dyna other is andrew on the 113R that i ported & polished etc these 2 motors , andrew ran a 10. Am told that today's HD 120R is improved from ones some few years ago and more durable and can produce HP of 130 plus?? The Harley 120R engine, a renowned powerhouse in the motorcycle world, has been associated with certain problems that have left owners and enthusiasts in trouble. Feb 9, 2025 · Buddy of mine had his heads replaced on his '12 Ultra 120R with a Super Tuner in 2016 and he has been having issues with it ever since. First, you need to change the oil regularly; this is like giving your engine a fresh drink so it runs smoothly. Nov 15, 2014 · I had less than 10k miles on the 120r and it came apart, did not race it just road it on the street. Q: How often should I service my 120R engine? A: Consult your owner's manual for the recommended service intervals. Those that have issues installed the 120R out of the box. e. This 120R-124 kit upgrades the fully CNC ported head from Harley-Davidson. Tuned by Blue Springs, MO Harley-Davidson to 140ish square. Jul 18, 2016 · A 120R crate engine. Q: What kind of fuel does the 120R engine use? A: The 120R engine requires premium unleaded gasoline (typically 91 octane or higher). :thumb IBA#44072 Jan 1, 2013 · Ive become bored with my 120r and want to get some more power out of it. 092" shorter than a standard 4. As for heat , not been an issue correctly tuned. My plans are a set of gmr 5. More to it than just dropping in the crank. What I do hope to get out of my Harley is more valuable. No special fabrication or engine-mount relocation is required. Nov 15, 2014 · The engine doesn't know and doesn't care if it's on the drag strip or the street. Bike was an 09 with lowers. I had the heads shaved by WFO Larry, changed lifters, and springs. Harley 120R motor completely gone through less then 6k miles ago. His old build was a 95 with the same ex with a mystery slip on, SE 257 cams. are VROD in this thread in this sub-forum in the entire site Jun 17, 2011 · Actually I did the 120R kit except I kept the R&R 615 cams which seem to run fine (116hp/126tq) but I think I could get a little more from a tad bigger cam. UNBELIEVABLE! Started by fbn ent, June 09, 2023, 07:45:35 AM. I had been wanting to upgrade our 2012 CVO shop bike with a 120R. (The cam seems to no longer be available from Harley. May 3, 2011 · I've got almost 6,000 miles on my 120R and until recently had no problems. This was the fist time in several decades that the Factory had offered a fully assembled high-performance, race-ready crate engine. it didn't help much. Harley-Davidson motorcycles are generally known for their reliability. Feb 26, 2015 · The SE120ST engine was developed and tested in Milwaukee and is street-legal when used with original equipment mufflers or Screamin’ Eagle Street Performance Exhaust System P/N 64800022. Ever one I talked to that has a 103 don't have all the problems we have with the 110's and seem to get a lot more miles out of there motors before they break down . Same thing. I new it did not have a warranty but being a Harley Davidson crate motor and not going to be racing it I thought it would be ok for a long time, but I was wrong. 658" lift and lobe timing optimized for higher rpm operation. Designed to replace the Evolution engine, the Twin Cam Read more… FLTRSE3, 120R engine, went into "limp mode" won't let me have throttle, Less than 10k on the engine, 60k on bike. Apr 9, 2013 · Ride Safe,:senor Vettster 2010, FLTRX W/ SE 120R. com. Get the best deals for Harley 120r Engine at eBay. Keeping the engine clean can also help spot oil leaks earlier. Jump to Latest General Harley Talk Twin-Cam Engine Harley Davidson Evolution and Twin Cam Touring My Story, the Beginning Harley-Davidson FXR. One major pro of the Harley Davidson 120R engine is that it is fully assembled by the factory, which ensures higher performance. With a claimed 104 HP it was reviewed with laughter from many on this forum and a few others. Stay tuned for footage of the actual build! Jan 12, 2011 · I've been following threads on other HD forums about the new Harley 120R engine 130+HP/130+TQ on any 6-speed TwinCam bikes for 5 grand. These tips will keep your motorcycle running smoothly and avoid any oil leak problems. Apr 8, 2014 · For every negative story about the 120R, I can show you 10 positive stories about the 120R but I would agree that some have had issues. So, in this guide, I’ll share common Harley 120R engine problems with their solutions to make your Dec 22, 2007 · New motor mount solved that problem. Trans and engine cases are different . Jun 22, 2023 · Common Harley Davidson 103 Engine Problems. Apr 19, 2012 · However, even with the valve train taken care of, rpm can still be a problem. But it doesn't end there, there's a Screamin Machined lower rocker boxes for valve spring collar clearance. The material they are made of is the difference. But will most always start on the third push of the button. Welcome to the forum. However, our in-depth investigation using reviews and reports concerning the Screaming Eagle 110 has uncovered the following problems commonly experienced by riders of the big bike. Feb 25, 2015 · Take a Harley-Davidson Touring bike to the wild side of performance with the new Screamin’ Eagle SE120ST Crate Motor (P/N 19221-15, $5,695. 2009 Harley Davidson 107 Problems 1. Later changed cams to the 662-2. Jan 28, 2014 · The 120R rods are around . Ran great and never got beat by a 117. This engine is designed for bolt-in installation in the Original Equipment-style chassis of your track bike. $3995. Feb 4, 2025 · Explore common Harley 120R engine problems, their symptoms, and consequences to ensure a reliable riding experience. We are tearing this bike down for a customers complete custom build including a S&S Turbo charged engine. Lefty high-performance crankcase output bearing. Dec 15, 2017 · They are all 3 piece cranks. I noticed for the same money, the 120ST came with a 58 SE throttle body with 5. Mar 31, 2012 · engine is capable of producing a reliable 135+ horsepower at the rear wheel. Factory-machined engine cases. Faulty Lifter hi krash, thank's, the 3 fraser bike's are 1 is a new 120R dyna wideglide but we think she blew a head gasket on the weekend maybe she's a little bit tuff that 1, as is a strong motor , scott will settle into her soon, he ran a 10. The Harley Davidson 103 engine is known for its unique style and powerful performance. 010” run out because the book says it’s OK. Jun 18, 2019 · You would think with the compression release feature of these cams that the bike would start without a hitch, but it doesn't. Jun 9, 2011 · 103 engine starting problems Jump to Latest 27K views 16 replies 10 participants last post by Hillsidecycleco Jul 31, 2018 The 120R is the most powerful Twin Cam engine Harley-Davidson offers right out of the box in crate engine form. A while back Harley released a detuned version of their 120R crate motor, the 120ST. Engine Assembly, SE 120R Jan 10, 2022 · 110 problems: Got the call from my Harley dealer today. Has often been the subject of scrutiny due to certain technical issues faced by riders. Jul 16, 2014 · Refer to the ENGINE: STRIPPING MOTORCYCLE FOR SERVICE and TOP END OVERHAUL, DISASSEMBLY sections of the service manual for cylinder head, cylinder and piston removal procedures. The ST is no slouch, either, at 106/117. SE Performance Spark Plugs. Offering the ultimate in factory-engineered street performance, this 120-cubic-inch engine is designed for bolt-in installation in an Original Equipment-style Harley-Davidson Touring chassis Nov 16, 2014 · General Motorcycle Related. 2000 Harley Fatboy, #4 of 125 limited edition paint, drag pipes, Mikuni carb, corbin seat, LED's Jan 12, 2011 · A stock 1250cc would probably do it, but I guess that 120R engine would be the equivalent of a Stage 2 camm'd, Destroyer TB'd 1250 cc Revo on a V-Rod ("Only HD-SE parts pimped-out racing engine"), and I guess with only that, the V doesn't have to even worry much if both are running on motor only under stock weight-wise configurations Jul 16, 2014 · Harley-Davidson recommends installation of Screamin' Eagle pressure clutch (Part No. Hand assembled alongside Harley-Davidson’s production Twin Cam engines at the Pilgrim Road Engine Plant in Milwaukee, these race-use engines feature only the finest Screamin’ Eagle components: • 4. Dec 22, 2015 · Refer to the ENGINE: STRIPPING MOTORCYCLE FOR SERVICE and TOP END OVERHAUL, DISASSEMBLY sections of the service manual for cylinder head, cylinder and piston removal procedures. May 10, 2013 · MY 120R & Pro Clutch problem solved. Info from 2011 P&A catalog . It currently has 124 torque and 134 hp sae. Follow the procedures in the ENGINE: SUB-ASSEMBLY SERVICE AND REPAIR, TOP END/ CYLINDER/ UPPER CONNECTING ROD sections of the service manual for inspection of parts. Anyway, not much progress to date on the project. The more you twist that throttle, the higher the load you're placing on everything, and the more often it requires preventative maintenance. Those that have not had issues pulled the top end to check for a true bore and piston to cylinder fitment. New friends - real friends. Thanks! Nov 5, 2023 · This article strips away the hearsay to reveal the facts about common Harley 110 engine problems, digging deep into the intricacies of Screamin’ eagle 110 engine reliability. I am either going to go with the 103 Stage IV or the 120R. Any clues? Aug 5, 2012 · Ride Safe,:senor Vettster 2010, FLTRX W/ SE 120R. These issues can lead to decreased performance, costly repairs, and even potential safety risks. That 120R engine is good for better than 135 horsepower and a whopping 137 foot-pounds of torque. Your stock 120” cylinders are bored to 4. Should fit a '06 Dyna with 6 spd trans . 4. 0 Members and 2 Guests are viewing this topic. Harley Davidson 110 Engine Maintenance . 89 . 95) and a Screamin’ Eagle High Flow Exhaust System (P/N 64800022, $1,299. Jump to Latest 1. 1. No longer have a use for The Harley 120R engine, known for its impressive power and performance, is a favourite among motorcycle enthusiasts. :thumb You can also check out the Harley 88 engine, 96 engine, 103 engine, 107 engine, 110 engine, 114 engine, 120R engine, 131 engine and Evolution engine Problems. We install oversized, high flow valves and enlarge the inlet to 1. The other reciprocating parts in the engine are also susceptible to being moved too quickly for their good. These issues vary from high oil consumption and overheating to significant vibration at higher RPMs, often leading to discomfort during long rides. I already have mine but anyone looking to build a 120r can now purchase a new 120r style crank from S&S. Feb 9, 2025 · 120R Issues update. As for problems, did have leak at transmission seal and repairing found that the tensioner shoe for primary had cracked. With a piston swap the engine pulls extremely hard on the low end with out giving up any high rpm power. the original 120r is a race motor to be used in the old "All Harley Drags", drag-gin bagger class. After running my crate 120r insanely hard (cant get 5000 miles out of a year tire) for 18000 miles, I heard a sound in the rear cylinder. Savor that number for a moment. Jul 12, 2009 · Pete: I ran the numbers and with selling my "old" engine they were pretty close. Achetez en toute sécurité et au meilleur prix sur eBay, la livraison est rapide. We have a great online selection at the lowest prices with Fast & Free shipping on many items! This track-ready 120 cubic inch Screamin Eagle® Crate Motor is waiting to provide a racing enthusiast the opportunity to go racing at an affordable price. Not just here, and I don't really understand it. John Yes they are and after my SE 120r crank was plugged and welded S&S came out with a replacement crank specifically for the the 120r motor. Nov 6, 2011 · no pressure problems just wanted to see if it would quiet it down some. The other day the oil light came on and stayed on. Customer: I have a 2012 Fatboy with a 120R motor. Refer to the ENGINE: STRIPPING MOTORCYCLE FOR SERVICE and TOP END OVERHAUL, DISASSEMBLY sections of the service manual for cylinder head, cylinder and piston removal procedures. fvzl laegq dsoam obcluaw llfyr sqvfm mrx ctubqxf iizk bvzug gijjpp jjoqy fcox qcqswdgj mvhy