1 d
Duramax broken crank?
Follow
11
Duramax broken crank?
Chevy and GMC Duramax Diesel Forum8M posts 211. However, like any electronic device, wireless mice can encounter issues o. Jun 23, 2016 · It's still uck of the draw. Let me rephrase it a littlemore people mod lbz's and lb7's. 2011 GMC Sierra CCSB 2500HD SLT 6. The duramax deisel thread Fingers started is worth the read, very informed and knowledgable guy there. I've got 3 LB7/LLY broken cranks here. 6-liter Duramax diesel engine gets an EPA-estimated 15 MPGs in city driving and 20 MPGs on highway driv. Built trans, head studs, S366. Not sure if it makes a difference which crank you have, I did go with a used LLY crank that was mag tested in my LMM though. It will make it very difficult to get the balancer off and could ruin the crank. Waiting to hear if GM is going to help with the repair costs. Loosen the nut on the oil pump, pull the oil pump drive gear off 6. Jan 15, 2016 · Seen 2 broken cranks that both ran with zero issues other than a vibration. I hate to say it, but the 6. The main cap and block journal seem ok (going to check out of round on the crank and main). Put in 5th grader term haha thanks. I'm not an expert by any means at all, but sure would appreciate some help here. Apr 19, 2008 15,416 1,695 113 Mid Michigan. Way undersize at this point. 7 Ford is looking better everyday. Can you replace a lmm broken crank without removing heads? Save Share Its not a super common thing, but its common enough most know about it. 06-07 LBZ & LLY Duramax Powertrain Lbz Crankshaft concerns. I'll buy the main bearing and I found two differentes OES kit GM # 12677680 and 12704537 and i dont what's the correct A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Nov 17, 2009 · Yeah, I didn't sleep last nite and I've been sick all day. We strive to keep this the #1 forum for tech and information. From all out performance builds running 8 second ¼ mile territory, to 2000hp sled pullers. One of its duties involves telling the computer when the No. Item Inquiry Tell a Friend. Motor entirely rebuilt by DFC Diesel less than 60,000 miles ago Broke the crank while towing. This is a new crankshaft for your 2011-2016 GM Duramax 6. Sent from my SM-G965U using Tapatalk Working on an 09 truck with broken crank. I need help with the crankshaft specification to Dumarax L5P version. Background - 2016 LML 6 Duramax with 58,000 miles -- all stock. This was with full billet main caps, studs, girdle, SoCal balancer and flywheel, and Fingers pistons (after. How to Repair a Broken Zipper - It�s not that hard to repair a broken zipper yourself. Chrome’s “Add to Taskbar” is a great way to make those webapps feel like desktop apps, b. Well, it happened to even one of our own. How accurate does the pin need to be in case the hole is ovalled out in the crank a bit? Thanks. They all break until you get to the L5P. This is the ONLY way to correctly fix the Duramax crank pin issue. I just took alot of precautions to avoid this AF cam mild tuning etc. Back then, we had to look up telephone number in a phone book or use directory assistance Appliances are an essential part of our daily lives, making household chores more manageable and our routines more convenient. Is it just me or is it rediculous that this happened? The truck is sitting at the dealership now. You turn the key in the ignition, but the engine doesn’t come to life Has your car ever been in a situation where you turn the key, and it cranks but will not start? This can be a frustrating experience, leaving you stranded and wondering what could. We are getting power and signal from both the crank and cam sensor. Dec 19, 2021 · in this episode we pull the engine and trans out of a 2012 and disassemble it to replace the broken crank and bearings. It will make it very difficult to get the balancer off and could ruin the crank. first owner/only owner. Let me rephrase it a littlemore people mod lbz's and lb7's. Get step-by-step instructions on how to repair or replace a broken zipper It's a familiar pattern: a company suffers a crisis and its board is blamed. 5-05 LLY Duramax Powertrain broken crank Had headgasket done and 5 weeks later broke the crank Dec 12, 2018 · Please bare with me here, this is the first Duramax (or Diesel) that I've ever owned. This is so much of a common issue that people have created cam shafts with altered firing orders to try to remove the stress from that point on the crank. stock balancer I had been pulling a trailer earlier in the day but was only going around 35 when it finally broke. Velux skylights are a popular choice for homeowners who want to bring in natural light and fresh air into their homes. Well I got 27,000 miles out of my longblock from XCalibur Diesel. This was with full billet main caps, studs, girdle, SoCal balancer and flywheel, and Fingers pistons (after. Ran perfect with no noise until about 2200rpm and then would stumble and spit and shake. I've never heard of the pistons cracking or the crankshaft snapping on stock engines. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! What size drill do I use to drill out broken pin in crank Like. I hate to say it, but the 6. Chevy / GMC Duramax 07 07. Any advice? Please bare with me here, this is the first Duramax (or Diesel) that I've ever owned. When your vehicle fails to start, it can be frustrating and even alarming. first owner/only owner. That pin broke for sure. Chevy and GMC Duramax Diesel Forum8M posts 212. 5-10 LMM Duramax Powertrain Jump to Latest Follow 2K views. This issue, commonly referred to as. I found the empire crank kit for the. Crank broke. Fluidamper has broken several cranks in DURAMAX's, they're too heavy (11lbs heavier than stock iirc), but the ones built in the last couple of years are supposed to be better. This was noticed at first at very low RPMs (about 1200) when I first started to. Unfortunately this is far to common on LML's than it should be. Joined Jan 20, 2009 · 5,370 Posts #61. Avoid catastrophic engine failure from a sheared dowel pin in your 2001-2016 GM 6. Truck is bone stock with 133k miles. TheBac Why do I keep doing this? Staff member. 05' Chevy LT Black on Black LLY CC/SB Blackout Performance built motor/trans/tuned- Gone. digworm io 9K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Jun 22, 2017 · My lml broke a crank shaft last Saturday night. So we pulled it out rolled it over and dropped a new lbz crank in. Place the drilling guide onto the crankshaft. Quadrasteer 4-wheel steering. We all sat down together to brainstorm, trying to come up with a simple and cost-effective way to make broken crankshafts a thing of the past. Also F34UA if present Is this a broken crank? Jump to Latest Follow 61 - 80 of 81 Posts. I vote broken crank 04 lb7 with 06 front clip. Not only does this mean game-over for the engine, but it results in a truck that's down for weeks (if not months) and a huge chunk of change missing from your wallet. We all sat down together to brainstorm, trying to come up with a simple and cost-effective way to make broken crankshafts a thing of the past. Well I've got a 2012 lml at work with a broken crank. If you are driving a stock LMM and have no intentions of modifying it, then you can ignore this issue. Thus the alternate firing order cam shafts being employed in a lot of builds. I think there is a problem with this. Once you remove that hub then you can see the cam gear and pin. 7K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts GM Duramax Crankshaft (2006-2010) (0) Reviews: Write first review Fits: 2006-2010 GM/Duramax Pricing: $1,357 Qty: Add to Cart Add to Wishlist. com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. People would need to have some fairly sophisticated equipment on a running engine to track how harmonics from the camshaft would eventually result in damage to the crank. Jun 22, 2017 · My lml broke a crank shaft last Saturday night. cracker barrel gettysburg Budget build would be cut lb7 lly pistons and some carrillos or lbz rods if you want to go real cheap. com was founded in 2006 and created a site which houses some of the best known Duramax tech. 5 Chrome H2 Boulder wheels, In-bed 50gal tank/toolbox, All on headlight mod with HIR bulbs. Some will tell you it works, some will show you broke alt firing cranks. I took a video and I think I was wrong. Item Inquiry Tell a Friend. Feb 6, 2011 624 0 16 34. 30k miles and 12 years old means it sat alot of its life and could have been dry started a few. Either way you need a new engine. Either way you need a new engine. Unfortunately this is far to common on LML's than it should be. Thanks for any info!!! Zak What would that have to do with the broken crank? I can't figure out why people say this, so I'll give my scenerio and you can give me yours Duramaxdiesels. He said first designs were having a "tapping" noise many customers were complaining about so they went to redesign it to get rid of the noise and were starting to break underload, idling. Way undersize at this point. May 16, 2023 · A friend of mine got this complete Lbz with a broken crank for a steal. Feb 12, 2019 · Broken Duramax crankshafts are all the rage these days. hillsong gospel music Rotate the crank until the gap in the reluctor wheel teeth straddles the flange mounting surface of the upper oil pan. Theres HUNDREDS of broken DURAMAX cranks from guys running aftermarket balancers on engine with cirtually no run time. When your car engine breaks down, it can be a stressful and frustrating experience. Wondering if anyone else has seen this? com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. Thanks Guys for the concerns, After all this is over I WILL shed so light on the Duramax broken crank problems and hopefully help someone else from having this pain, Like I always told my kids you learn from your mistakes, I already have a good idea of what caused this but still researching before I post my findings. com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. In today’s fast-paced world, it is important to be prepared for any situation. Many have tried alt firing cranks to reduce the pressures on the shaft. This was with full billet main caps, studs, girdle, SoCal balancer and flywheel, and Fingers pistons (after. May 8, 2013 · Yeah, it's a 3500 and the customer told us afterwards he put the parts on for his towing and fuel mileage. 41 May 13, 2010 This is where mine broke. Common problems with Duramax diesel engines include air in the fuel lines, fuel starvation, water pump failure, overheating, injector failure and harness chafing When it comes to maintaining and repairing your Duramax vehicle, finding a reliable repair shop is crucial. This issue, commonly referred to as. Thanks Guys for the concerns, After all this is over I WILL shed so light on the Duramax broken crank problems and hopefully help someone else from having this pain, Like I always told my kids you learn from your mistakes, I already have a good idea of what caused this but still researching before I post my findings. Many have tried alt firing cranks to reduce the pressures on the shaft. 7 Powerstroke engines. He said first designs were having a "tapping" noise many customers were complaining about so they went to redesign it to get rid of the noise and were starting to break underload, idling. I took a video and I think I was wrong. May 10, 2012 · Icepick them all. I just had a broken crank come in on a lmm 2 weeks or so ago. Deleted needs a tune to run correctly but not necessarily using a canned tune from edge, banks, etc. However, there may come a time when your Whirlpool ice maker st. Our DuraBlock is a low cost engine build kit made for a street truck and will handle up to 800 rwhp. Some will tell you it works, some will show you broke alt firing cranks.
Post Opinion
Like
What Girls & Guys Said
Opinion
90Opinion
May 4, 2021 · Try that first then if it still does it you have more problems such as a broke crank. A engineer just happen to be there (for another vehicle at the shop) when I pulled the pan off. 08 3500 in Arctic White. First broken crank I found it spun the mains and the block was questionable. It pretty much has to with the factory firing order putting the right harmonics on the crank. built trans with BD tripple disc converter a airdog 165 cold air intake mitshimoto radiator hoses mitshimoto external oil cooler. However, like any electronic device, wireless mice can encounter issues o. May 6, 2017 · 2007 Silverado Classic 2500HD EC, SB Purchased New, BD LH Exhaust Manifold, EGR Delete, EFI Live DSP5 tunes by Duramax Tuner, Diamond Eye 3" Downpipe, Banks 4" Monster exhaust, Banks 3" Intercooler tube, AFE Turbo Inlet Tube, Kennedy dual lift pump, Bilstein shocks, 285x70-17 BFG T/A KO2 on 17x8. I was running stock LMM bottom end with a socal AF cam 60 over injectors a 10mm exergy CP3 a 72mm danville turbo ppe up pipes and exhaust manifolds 3"down pipe to 4" straight pipe exhaust. Ever wonder what a broken crankshaft sounds and looks like? Check this one out! This is a LMM Duramax with around 150k miles. Place the drilling guide onto the crankshaft. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View All Radio Show Lat. Motor entirely rebuilt by DFC Diesel less than 60,000 miles ago Broke the crank while towing. Watch this video to find out how to recycle old broken crayons by melting them in a microwave, and pouring the wax into plastic molds to form new shapes. built trans with BD tripple disc converter a airdog 165 cold air intake mitshimoto radiator hoses mitshimoto external oil cooler. The car was 2 days old, I had prepped it for sale as well. I was curious of the number of people that have broken their crankshaft were running electric fans and the number of people that were running the stock fan assembly, just curious so humor me. We would like to show you a description here but the site won’t allow us. LML's seem to pop around the 150-200K mile mark, others are a gamble. XDP designed this crank shaft pin kit to fix the all too common shearing of factory dowel pins, resulting in broken crank shafts in your Duramax. in this episode we pull the engine and trans out of a 2012 and disassemble it to replace the broken crank and bearings. Nov 17, 2009 · Yeah, I didn't sleep last nite and I've been sick all day. They all do it, but the LB7/LLY cranks have a little more weight to them so they are preferred if you're building the motor. travel trailers for sale phoenix Too many damn trucks. Not only does this mean game-over for the engine, but it results in a truck that's down for weeks (if not months) and a huge chunk of change missing from your wallet. Nov 17, 2009 · Yeah, I didn't sleep last nite and I've been sick all day. Too many damn trucks. Install the supplied bolt hand-tight with a ratchet or wrench. 1 cylinder is at top dead center. This is an older thread, you may not receive a response, and could be reviving an old thread. From reading some apparently they are having crank problems. We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. We strive to keep this the #1 forum for tech and information while continuing the push for new and. Nov 16, 2021 · LB7 Duramax 2004. Description; Details; Shipping; Description. The way they broke was at an angle, best way to describe without pics. One of its duties involves telling the computer when the No. Car trouble always seems to happen at the most inconvenient times, usually when you are already running late or on your way to an extremely important commitment Whirlpool ice makers are a convenient appliance that can provide you with a steady supply of ice for your beverages. 08 lmm Duramax 45% S&S Injectors DSP5. LML's seem to pop around the 150-200K mile mark, others are a gamble. I hate to say it, but the 6. As to harmonics, these same harmonics are present in engines running ATI balancers, it's just a natural harmonic in the engine. It still throws the code after clearing it when cranking. 06-07 LBZ & LLY Duramax Powertrain Lbz Crankshaft concerns. For some reason my phone picked up the sound better than I can hear it sitting in the driver seat. 08 lmm Duramax 45% S&S Injectors DSP5. 4K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. what does smelling salts smell like Chevy / GMC Duramax 07 07. Thanks for any info!!! Zak Aug 13, 2009 · DING, DING, DING, WE HAVE A WINNER! BIG DIPPER -i think the same way as you do on this. When I rotated the crank the opposite way the converter didn't move till a clunk was heard. I wanted to truck back running ASAP so I bought a used low mileage complete engine that was supposed to have been gone though and all checked out Duramaxdiesels. Seems 11-13 had a pretty high rate of failure at 150k+ miles. Has this ever happened to you? You hop in your car, turn the key, and all you hear is the sound of the engine cranking, but it just won’t start. We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. I broke a crank on my 08 LMM and i am getting ready to put another motor in. This one looks to have broken at the back though, because I can rotate the flywheel about 1" without turning the engine Nov 26, 2018 · Broken cranks seem to be a very rare problem for Duramax's. We strive to keep this the #1 forum for tech and information. Do the FICM harness repair. This was noticed at first at very low RPMs (about. We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. Name: Matt ASE Certified, former GM Parts guy The bearings allow the crankshaft to spin smoothly in its place, while also stabilizing the crankshaft as it is subjected to the powerful forces of the pistons and connecting rods that are rotating it. Remove factory crankshaft bolt, using a 12point 36mm socket. We strive to keep this the #1 forum. 3. com was founded in 2006 and created a site which houses some of the best known Duramax tech you can. If your pin broke on the balancer most likely the other one is not to far. If you’ve ever experienced the frustration of turning the key in your car’s ignition, only to have it crank without starting, you’re not alone. I’m between 430-450psi in all cylinders as well, did a manual compression test after. It can be frustrating and confusing. Story/Issue = Went to crank my truck in the morning before work, as I always do. We would like to show you a description here but the site won’t allow us. Sep 29, 2009 · 2003 GMC Sierra 2500HD LB7 Duramax 4WD Crew Cab SB 310k miles Built motor, and still slow. publix in sevierville tn 9K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. 6-speed Allison conversion. com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. It never spun any bearings but we put new rods and mains in and it’s still running today with another 50 thousand miles since then. May 4, 2021 · Try that first then if it still does it you have more problems such as a broke crank. 6L Duramax? CHAD REMAKEL: The main reason for modifying the Duramax firing order with the camshaft is to relieve stress on the front portion of the crankshaft in higher performance applications. 6-speed Allison conversion. Theres HUNDREDS of broken DURAMAX cranks from guys running aftermarket balancers on engine with cirtually no run time. Quadrasteer 4-wheel steering After a broken crank, you can do a replacement in the same block, but you will have to have the main journals. stock balancer I had been pulling a trailer earlier in the day but was only going around 35 when it finally broke. Truck is all stock except for lift, tires and steering upgrades Currently just a little short on cash and time. Broke the crank while towing. The damage was caused by the vibration dampener dowel pin wearing and allowing the dampener to move. He had it together for about 2yrs and broke the crankshaft. So I figured my best bet maybe to just pull the engine and replace it with a used complete engine. Truck is all stock except for lift, tires and steering upgrades Currently just a little short on cash and time. Item Inquiry Tell a Friend.
2003 Chevy Suburban 2500 LB7 Duramax AWD Quadrasteer 135k miles. I already have a good crank for it. The main cap and block journal seem ok (going to check out of round on the crank and main). Feb 2, 2010 · 2011 GMC Sierra 2500HD 4x4 Ext Cab LML Duramax Cognito Platinum Leveling kit with FOX Shox 2006 GMC Sierra 2500HD CCSB 2WD LBZ, Banks Six-Gun w/PDA, Magnaflow 4", TB PCV re-route & Trans lines, Weathertechs, AVH-P3100DVD, Focal Access 165s, Bushwackers, Caterpillar batteries PN#127-0826, Energy Suspension Body Mounts Mar 29, 2009 · (you will know it immediately). Come join the discussion about modifications, towing, classifieds. 1 4 of 5 Go to page 5. is allegan public schools closed today 5 Chrome H2 Boulder wheels, In-bed 50gal tank/toolbox, All on headlight mod with HIR bulbs. Our most popular Compstar builds get paired with: Upgrade the engine in your 2001-2016 Chevy Silverado/GMC Sierra 2500HD/3500HD Duramax with a Callies Durastar crankshafts. its going to be way easier to fix the broke pins and get the cam drive gear back on without messing up the thrust bearings. Unfortunately this is far to common on LML's than it should be. 3K members Since 2005 A forum community dedicated to Chevy. The truck starts and runs well, albeit, doesnt balance injectors because of it. He had it together for about 2yrs and broke the crankshaft. onin staffing paragould This is because Expert Advice On Improving. Eight time TTPA points champ 2006 to 2013. Phoenix Az #3. Well, until you look at the diameter and overlap of the 64 main and rod journals. 7 Ford is looking better everyday. Motor has 191,000 on it. The crank reluctor wheel is rock solid. Only found the problem when I rotated the crank to far and passed the torque converter bolt. springfield m1 garand serial number lookup The duramax deisel thread Fingers started is worth the read, very informed and knowledgable guy there. I think there is a problem with this. Get step-by-step instructions on how to repair or replace a broken zipper Throwing away a broken vacuum cleaner is bad for the environment. Common problems with Duramax diesel engines include air in the fuel lines, fuel starvation, water pump failure, overheating, injector failure and harness chafing When it comes to maintaining and repairing your Duramax vehicle, finding a reliable repair shop is crucial. Billet Engine Plates, Sled Pulling Performance Upgrades, Allison Trans Blankets, PCV Reroute Kits, High Flow Intake Manifolds 2001-2010 Duramax Diesel. 2007 GMC Sierra 3500 Classic Dually LBZ Duramax Stock 3. Is your refrigerator ice maker not working? Don’t worry.
CALLIES Compstar - Duramax Crankshaft (2001-2016) Callies Durastar crankshafts are designed to be substantially stronger than OEM shafts currently found in GM's popular Duramax diesel. 7K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts GM Duramax Crankshaft (2006-2010) (0) Reviews: Write first review Fits: 2006-2010 GM/Duramax Pricing: $1,357 Qty: Add to Cart Add to Wishlist. It might be fine, and your issue is just the hub in front of it Duramaxdiesels. The bearing was pretty well chawed up. As to harmonics, these same harmonics are present in engines running ATI balancers, it's just a natural harmonic in the engine. 2007 GMC Sierra 3500 Classic Dually LBZ Duramax Stock 3. How to Repair a Broken Zipper - It�s not that hard to repair a broken zipper yourself. You turn the key in the ignition, but the engine doesn’t come to life Has your car ever been in a situation where you turn the key, and it cranks but will not start? This can be a frustrating experience, leaving you stranded and wondering what could. New LP5 owner first 2017 GMC Denali Duramax Danville Stage2R68mm,PPE Duel Fuelers 45 Over injectors,16-1. Budget build would be cut lb7 lly pistons and some carrillos or lbz rods if you want to go real cheap. The damage was caused by the vibration dampener dowel pin wearing and allowing the dampener to move. When your car engine breaks down, it can be a stressful and frustrating experience. Any advice? Please bare with me here, this is the first Duramax (or Diesel) that I've ever owned. 20 over Mahel Cast pistons,Carrillo Rods,Wagler Billet Crank and Main caps, SocalDamper, Arp hardware keyed Crank and Cam Balanced Crank and rods. Best ways to check are rotating by balancer bolt while watching for flywheel movement, or checking for up/down/side movement of the front of the crankshaft I have just broke a crank in my 08 LMM and I am wondering if they make a kit so I can put a cummins in it. Jump to Latest 61 - 69 of 69 Posts This thread made me laugh out loud, really hard. The beauty of this classic hymn lies not only in its uplifti. One of his most iconic songs,. Come join the discussion about modifications, towing, classifieds. He said first designs were having a "tapping" noise many customers were complaining about so they went to redesign it to get rid of the noise and were starting to break underload, idling. Broke the crank while towing. Some will tell you it works, some will show you broke alt firing cranks. boscovs pay my bill Edit Your Post Published by Je. Can you replace a lmm broken crank without removing heads? Save Share Sort by Oldest. 06-07 LBZ & LLY Duramax Powertrain Lbz Crankshaft concerns. The ECM then verifies that the clutch is depressed for the manual transmission or that the automatic transmission is in Park or Neutral. Wondering if anyone else has seen this? com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. Apr 19, 2008 15,416 1,695 113 Mid Michigan. Ran perfect with no noise until about 2200rpm and then would stumble and spit and shake. We strive to keep this the #1 forum for tech and information while continuing. Over time, however, it can become damaged or worn out, leading to le. I'm not an expert by any means at all, but sure would appreciate some help here. Quadrasteer 4-wheel steering. Rotate the crank until the gap in the reluctor wheel teeth straddles the flange mounting surface of the upper oil pan. This is an older thread, you may not receive a response, and could be reviving an old thread. Looking to purchase a reman LML long block and part swap everything over Chevy and GMC Duramax Diesel Forum8M posts 212. I am fearing the worst with this. The oil pan would have to be dropped to confirm the broken crank. DMAXfirefighter · Former GM Tech and parts. I just did the water pump in my 08 lmm as soon as I got it started to check for leaks the motor started shaking pulled everything off come to find out I sheared off the crankshaft pin so I called my dealership this morning had him get me two pins The part number for the pins the # for the pins are #94048159 but they don't look right look way to small The broken crank started as lost power when accelerating. Install the supplied bolt hand-tight with a ratchet or wrench. One item that can come in handy during emergencies or power outages is a hand crank radio flashlight The Cummins L10 engine has an oil capacity of 38 liters, or approximately 10 U gallons. Background - 2016 LML 6 Duramax with 58,000 miles -- all stock. I picked up a used crank and took it to a local engine builder along with the main caps and the caps wouldn't pass inspection. 17 00 edt I just had a broken crank come in on a lmm 2 weeks or so ago. in my personal opinion, the reason why we dont see as many broken cranks in lly's is simply because more people own lbz's and lb7's. He had it together for about 2yrs and broke the crankshaft. Too many damn trucks. We strive to keep this the #1 forum for tech and information. I took a video and I think I was wrong. Name: Matt ASE Certified, former GM Parts guy The bearings allow the crankshaft to spin smoothly in its place, while also stabilizing the crankshaft as it is subjected to the powerful forces of the pistons and connecting rods that are rotating it. 8 KB · Views: 41 JDPlowboy Member. You turn the key in the ignition, but the engine doesn’t come to life Has your car ever been in a situation where you turn the key, and it cranks but will not start? This can be a frustrating experience, leaving you stranded and wondering what could. Too many damn trucks. I had an LB7 engine that I took the crank out of, tore down his engine to a short block, and it went to the machine shop to get checked out and the crank swapped. The factory firing is 1-2-7-8-4-5-6-3, but this new camshaft design changes that to 1-5-6-3-4-2-7-8. It can be frustrating and confusing. Try that first then if it still does it you have more problems such as a broke crank. Well, as the title states I have a 2011 LML with a broken crankshaft. As to harmonics, these same harmonics are present in engines running ATI balancers, it's just a natural harmonic in the engine. Name: Matt ASE Certified, former GM Parts guy The bearings allow the crankshaft to spin smoothly in its place, while also stabilizing the crankshaft as it is subjected to the powerful forces of the pistons and connecting rods that are rotating it. Jump to Latest Follow. Cat Stevens, the legendary singer-songwriter, has left an indelible mark on the music industry with his soulful melodies and thought-provoking lyrics. The truck is stock other than having stuff deleted and a small tow tune LML Duramax Engine Crankshaft | 12680206 | 2011-2016 GM Duramax LML 6 OEM Crosses: 12680206 Pricing: $1,495 Qty: Free Shipping Add to Cart Add to Wishlist.