how to balance a flywheel and clutch

If you would like your login information reset, click on the button below to request your login information to be reset. Passwords are case-sentive.If you continue to have problems click on the Help Icon for additional options. It's actually done with bob weights on the journals, with harmonic, flywheel, and clutch installed - and a fudge factor thrown in for the. Depending on the severity of the imbalance, it could lead to serious damage to the entire driveline if the issue is not addressed. Ultra lightweight flywheels which are designed specific for race applications such as SCCA or SOLO racing androad course tracks these tend to be too light for street use, and can cause adverse affects in regular stop and go driving or traffic like stalling or high revving starts. dogdo yourself fav. Due to the loss in mass, these tend to require changes in your driving habits which can be a bit irritating for daily use. This video shows how I went about balancing my LC Engineering flywheel (35 lb steel) and AISIN CTX-107 pressure plate. That must be a clutch only price. To clear up the confusion, lets discuss the differences between the two. Is this a good idea? According to Autoguru.com, the flywheel has a few different purposes. Check out this cutaway of an Optimum-SR clutch from Quarter Master which features a billet aluminum lightweight flywheel. .Bi@f|nsK_A2^xMxTL-''P EU4Y#~'iwfR?Ny?|yE]EJ^yZ?6O&_'@g Your E-Mail and/or password are incorrect. Now comes the next question, what materials do you want to use with what? Every company manufactures its flywheel for different applications, power outputs, and overall drivability. As long as it can be mounted on his balancer. . However, that same flywheel would warp or even flex under the load of a larger style diaphragm clutch. Jerry I am just trying to help..I also did some learning the hard way.. These types of vehicles require a bit more weight to maintain proper idle and to get the momentum to move off the line. Now that we know what a flywheel does, we can see just how important it is when it comes to the balance of the transmission, clutch, and even the engine assembly. They did a Kevlar clutch for my ole 911, machine flywheel & pp, rebuild disc w/Kevlar was close to $400 w/shipping. Hey Randy, since the disc can land anywhere, it should be balanced as a sole unit (if not shipped balanced perfectly, doesn't hurt to check). Please Select your car type Below: Select Your Car Type to Ensure Proper Part Fitment. 79 93 mustang Replaced my Clutch (Sachs) and flywheel (Sebro) on my 88 911, and now have a vibration/chatter at low RPM's (2000 - 2500) under load/acceleration progressively worse in higher gears. I remember when I had the engine balanced they wanted the . so how many engines have you guys balanced????? The machine then shows where to remove weight and how much weight is to be removed, which is usually done by drilling holes in a non-contact area near the rim of the flywheel. Any imbalance will be felt , like a road wheel out of balance. Were all for getting new parts, but does the flywheel really need to be resurfaced? Flywheel Tolerance What Is It? Steel is the best friction surface for most materials because it offers a good seatability and wear pattern. Build your own custom newsletter with the content you love from LSX Magazine, directly to your inbox, absolutely FREE! This is the heavy spot. It should also be checked The boys here get $125. Since this is such a massive part with large diameter, it has to be balanced, and the factory usually does a pretty good job of it. This s a big reason but not the only one why serious racers build niter ally balanced engines as then all that needs to be done to interchange parts like the flywheel or flexplate . In the literal sense, a flywheel is a large metal disc that usually made out of cast iron, steel, or aluminum and its usually thick and heavy to prevent warpage during use. However,a lightweight flywheel isnt always ideal depending on the application. Reply. The flywheel mates to the clutch pressure plate and crankshaft, and the pressure plate can decouple from the flywheel when the clutch is disengaged. Aug 31, 2002. 5.0Resto, SVE, LMR are registered trademarks of Latemodel Restoration Supply, Inc. Ford, SVT, Special Vehicle Team, Ford Mustang, Ford Lightning, Mach 1, Mach-E, Shelby GT500, GT350, GT350R, New Edge, Boss 302, 5.0, Cobra R, Fox Body Mustang, Ghia, Turbo GT, SVT Cobra, Cobra Jet, Bullitt, California Special, Cobra, GT, V6, S197, SN95, S550, S650, Dark Horse, F-Series, F-150, Triton, F150 Raptor, Raptor, EcoBoost, Bronco, Bronco Sport, Badlands, Big Bend, Black Diamond, Outer Banks, Wildtrak, and Sasquatch are all registered trademarks of Ford Motor Company. Exactly !!!!! %PDF-1.5 I have a vibration that starts a little over 2000 RPM and seems to fade way above 3000 RPM. This route gives you an almost infinite lifespan for the flywheel, allowing it to be rebuilt multiple times without changing the dimensional features required for correct clutch operation. We do offer a lineup of steel flywheels that do not have a replaceable friction surface. Our Chromoly lightweight flywheels have gone through and passed engineering tests up to 15,000-18,000 RPM.All our Chromoly Flywheels are heat treated for extreme durability and saves you money by resurfacing multiple times. Car is an 1986 Cutlass with a 6.0L LS engine and the transmission is a T56. Why Is It Important? The balancing machine in the picture is supposed to have the piece being balanced spun , not too fast maybe 800 - 1000 rpm . A neutral balanced flywheel or flexplate means that it isn't balanced out of balance or what is called "Detroit-balanced" like the 400SB and 454BB that are both "externally-balanced" engines. For example, a flywheel manufactured out of 2024-aluminum will work excellent when paired to a button-style race clutch. If the flywheel and clutch assembly are out of balance, noise, vibration, and harshness levels will dramatically increase, and will inevitably cause extreme damage to the engine, transmission, or driveline. Proper step and recess dimensions assure clean and consistent clutch actuation and promote maximum clamp load. I'm sure there are more, that's who our shop and myself have used. Each flywheel option the company offers is manufactured for a specific vehicle application, and different driving habits. Had two crank grinders running all the time. endobj Great for a road racing application, andnot so great on the street or drag strip. When it comes to high-performance applications of any sort, there comes a time when the capabilities of the vehicles OEM clutch assembly will have to beevaluated. ENGINEERED FOR BOTH STREET AND RACE APPLICATIONS. Now from '86 to '95, all the clutches were upgraded to the 10 1/2 inch version that we know today. The best place to go for anything Mustang related! If the flywheel is too worn and cannot be resurfaced, then it is advisable to replace the whole thing with a new part. Our job is to analyze the original flywheel and engineer major improvements. Clutch diameter: 10.400" Starter ring gear teeth: 153; Lightweight nodular iron . The down side is i didn't include the cost for these new parts in my engine rebuild buget :0( Oh' well there's no saving these parts, so i gotta get em all new Man this is an expensive hobby! These can be found in drag racing applications, and even for marine use. Our goal for this question-and-answer session is to discuss many frequently asked questions regarding the flywheel, and to help enthusiasts gain a better understanding of the science behind them. Broken cranks, cracked bell housings, are all a result of out of balance. 1 0 obj Here a copy of a post that I did a few months back. You may not need much weight then to balance. PS: Nick Swift came over and drove one of my vintage cars to a VIR Gold Cup win as well. At one time or another, most of us have had to replace our clutch assembly in our vehicles; and we all know what a giant pain that can be. As dear old dad said advice is worth what it costs you and this I give you free. How to resurface your flywheel, pressure plate & clutch yourself for free! "DETROIT" FLYWHEEL BALANCE - Certain model engines now being produced have incorporated a counter weight in the flywheel to compensate for the lack of counter weight in the crankshaft. My bits are ready for balancingthe second engine needs a SPI clutch (an MPI clutch was sent) and crank lapped then both can go off together. THen the harmonic balancer and the flywheel need to match that. If my crankshaft has only been reduced by .010 and .010 mains and rods is shouldnt change the factory balancing. The billet steel will also work great in a stock application if you just have to have the best of the best for your car. On a 40+ lb flywheel / pressure plate assembly, that's good enough for the pickup truck. Little known fact Vizard has driven my race cars and I have a collection of pre publication manuscirpts I have proof read for him. :cheers: MTI 383 Stroker Motor. set cam timing??? Now from '86 to '95, all the clutches were upgraded to the 10 1/2 inch version that we know today. Or it will at least be very costly. However, in the world of aftermarket flywheel options, this isnt always the case, as it varies from application to application. This is also why companies manufacture heavier weighted flywheels. Clutch types. Mal stop me man, Hey I'm OK. How "balanced" are we talking? Hi guys. Also, enthusiasts must prioritize performance and drivability. Should you need information on something not found below, there will likely be a little more research to be done. Ideas or links to other posts welcome. I now have a noticeable vibration above 3000 rpm. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . Was a 50 ounce imbalance flywheel and it's a very common upgrade to make those a 10 and 1/2 inch whenever you go to swap out the clutch. This is the point we are trying to get across. All rights reserved. The goal is to make a power application the most efficient, as its not always about where the car is driven. If reusing the old pulley check for seal wear and possible wear in the bore and keyway. I hope when you get it all together and running it does not have any unusual vibrations as you will have wished you took the advice. states "Hays recommends balancing clutch/flywheel as assembly before installation." The paperwork also states "Balance with crank if possible." Paperwork identifies this next to a problem of "Vibration at high RPM." Always remember to do it right the first time, because its done wrong, there might not be a second time. let them pistons reach for the stars. Makes sense. Free shipping on all orders $100+ Lower 48 states only. So the flywheel, clutch, and pressure plate were all replaced. This is, of course, after the flywheel has been balanced as well. Fidanza Performance applies a unique protective coating to identify any remaining oil or residue from its machining process to each of its flywheel and clutch assemblies. Action Clutch specifically designed our Chromoly flywheels for a reduction in weight and inertia for better engine response. Your cast iron flywheel, obviously, that's a great stock replacement even for mild bolt-ons. From the factory, your '82 to '95 Mustangs came with a ten-inch clutch and was a fifty-ounce imbalance flywheel. I have been told that for an external balanced flywheel that there should be 3 large circular areas taken out further in towards the center away from the starter ring. Any factory engine or any rebuilt factory engine is going to take a 50-ounce imbalance flywheel. Another broken crank would suck!. All of our aluminum flywheels include a hardened steel friction surface that is designed to be replaced versus being resurfaced. 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