how to balance a flywheel and clutch

Do it right once or continue payingits an easy choice really!! Mine is but a fairly standard 1293 (because that was the bore available) but with new bits - cam/lifters/push rods, connecting rods, crank, lightweight flywheel, clutch. All rotating bits will be balanced by a shop that has done A Series engines for quite some timeincluding my 1380at a cost of $125 (price for 4 cylinder engines). Design by: PelicanParts.com | Powered by vBulletin Version 3.8.7Copyright 2000 - 2023, vBulletin Solutions, Inc. However, when you get into the options from all of your aftermarket companies, you'll either have billet steel, billet aluminum, or both in fifty-ounce imbalance, twenty-ounce, and even a complete zero neutral balance. Check out this cutaway of an Optimum-SR clutch from Quarter Master which features a billet aluminum lightweight flywheel. The whole assembly is then spun up to measure vibration, and the clutch cover (pressure plate assembly) is then balanced. Car is an 1986 Cutlass with a 6.0L LS engine and the transmission is a T56. If you have a zero balance motor it means that you need a flywheel balanced to zero. which way the piston rings go on the piston as well as how to index them on the piston? The Fora platform includes forum software by XenForo. I have used a tire balance machine to balance my setup. Fifty tonne power station turbines are balanced this way. I just had the Spec III put in my car using the stock flywheel. Spend another $20 and get the crank checked, piece of mind is worth it. The ability of the flywheel to control heat and maintain tolerance can also prolong clutch performance and wear under extreme conditions. Had two crank grinders running all the time. with stanchion tube ultra low friction oil. The factory might use round weights to be riveted onto the edge of the cover. Good luck with the build. Cobra Make, Engine: Everett-Morrison LS1. I recently purchased a Hays clutch kit along with a new flywheel and in the "Dos & Dont's Problems" paperwork from Hays. I'm sure there are more, that's who our shop and myself have used. I think that bolt in the back of the Flywheel may hit the block anyways. Granted, it does make for a smoother revving engine, that is assuming that it is out of balance in the first place. Always remember to do it right the first time, because its done wrong, there might not be a second time. I have always felt balance is a good way to spend money on these engines. This eliminates any imperfections on the surface and ensures a proper seating position in the clutch assembly, ultimately protecting the assembly and creating a safeguard. Issues can still come up if the two pieces are not balanced together, creating small problems like vibrations or chatter, or even larger issues like crank bearing wear, seal wear, or worse. However,a lightweight flywheel isnt always ideal depending on the application. Now comes the next question, what materials do you want to use with what? Can't wait to get it installed now. set cam timing??? With so much inconsistency in enthusiast reports of flywheel performance, we felt this was a topic that merits discussion. Is this a good idea? West Los Angeles. Billet aluminum is suited well for the road course where you can have instant acceleration out of the corners. Jenkins/Fidanza:Both styles of flywheel can be found on the market. There has to be one somewhere. No vibration before or after the 1500 rpm mark. This video shows how I went about balancing my LC Engineering flywheel (35 lb steel) and AISIN CTX-107 pressure plate. Website content, text, & images Copyright 2023 LMR.com - All Rights Reserved. These can be found in drag racing applications, and even for marine use. Another thing to remember is that pretty much all of your aftermarket billet flywheels are going to be SFI approved. Posts: 7,924. In addition, engine balance there are three other important factors to consider. x=nIyX\hdw`1JD){58QY$eq_[>6?7|%Y5yVIIz,^u[mU4]urvy]&E$r Wg(G'jyiV%' As you drive a manual transmission car, the clutch is constantly coming in contact with the flywheel when you release the clutch pedal. When it comes to engine and transmission work, it can be a pain to have to do anything twice. .Bi@f|nsK_A2^xMxTL-''P EU4Y#~'iwfR?Ny?|yE]EJ^yZ?6O&_'@g The lighter a flywheel is, the faster it spools up RPM; but also means the harder it is to start from a standstill. If you put a 28 oz flywheel, one that has a 28 oz weight tacked on somewhere on the outer circumference of the flywheel , the motor will vibrate like mad, eventually breaking something. i know you don't with that done and you somehow manage to assemble the rest correctly..you will be able to beat the liven crap out of her for a long time. The combination is better known as Atomic Green for its color. Jerry I am just trying to help..I also did some learning the hard way.. PP and flywheel get balanced as an assembly, the disc does not. The goal is to make a power application the most efficient, as its not always about where the car is driven. The flywheel will be easy, the cast weight will be small for 28oz early style, and large for 50oz . SPEC reduces unwanted weight on a vehicles driveline by reducing mass in its entire clutch assembly, starting with its flywheel. On top of that, considering how long it takes to change out a clutch and flywheel set, its probably a good idea to do everything the correct way the first time around. I'm sure it will be just fine it was before. 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. Steel is the best friction surface for most materials because it offers a good seatability and wear pattern. YES! However, not a major concern if you change the flywheel at a later date on these motors. Chromoly is an abbreviation for chromium-molybdenum steel" due to its property of incorporating alloy elements chromium and molybdenum. I trust my engine rebuilder implicitly. In order to prevent any issues after installing a new clutch, or later down the line, its important to get the flywheel resurfaced by a qualified mechanic. 1 0 obj If you would like your login information reset, click on the button below to request your login information to be reset. JavaScript is disabled. zildjian4life218 said: I just replaced my LS7 clutch that is in my car with a Monster stage 2. All of our aluminum flywheels include a hardened steel friction surface that is designed to be replaced versus being resurfaced. Our flywheels are built for racing and performance. Makes sense. For example, a very light flywheel can make a clutch feel more aggressive. Your E-Mail and/or password are incorrect. 4 0 obj : For registered members this ad will NOT show, Location: Palma de Mallorca, Spain, I have been retired from there 15 years. To balance it, you would drill holes, not weld or bolt anything to the flywheel. Why Is It Important? This is the point we are trying to get across. In the 25 years I worked at an auto machine shop I'd guess I worked on over 1000 balance jobs. They celibrate their 95th this year. - asinine not to imo. Living in San Diego for most of his life, Harrison was exposed to a variety of cars at an early age. Any time you're going to be using a clutch that has a puck typeface, semi-metallic, ceramic, doesn't matter. your best bet and the smartest thing for you to do is.. find the best machine shop around next take the block, crank, rod's, piston's. Life is tough, but it's tougher when you're stupidJohn Wayne. you can also have the individual parts (just flywheel or pressure plate) balanced individually but to get the nTH degree balance as an assembly. 3912 Whittier BlvdLos Angeles, CA 90023(323) 269-6051. How to resurface your flywheel, pressure plate & clutch yourself for free! Balancing doesn't "have" to be done, and race builders also alter the balance to allow for some positive benefits by overbalancing. A flywheelimbalance can destroy engine bearings and other driveline components if the flywheel is not balanced, and also not in its allowable tolerance. flywheel can obtain hot spots due to the excessive friction. Each manufacturer has its own unique process for creating flywheels. Your Login Failed. It's actually done with bob weights on the journals, with harmonic, flywheel, and clutch installed - and a fudge factor thrown in for the. , I want to register an account for free right now! These are a very specific flywheel application and are not meant to be used on the road or in track vehicles, as the additional weight is not necessarily wanted in higher revving applications. Come check out discussions on performance, specifications, modifications, purchasing, maintenance and more! Just order the clutch/flywheel from DTE. The tighter or closer to zero the tolerance, the more balanced the unit will be. The flywheel can typically be resurfaced pretty easily and should be a relatively low-cost procedure. As it pertains to machining and manufacturing tolerance, parallelism and concentricity are the important measurement standards. 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. So whats the best option for reliability? I try for the very best result. Most lightweight flywheels can be used in both street cars and race applications. Any usage or mentions of these terms throughout our website and print ads are used for identification purposes only. The style of driving or racing will usually determine the need for a specific style clutch, which will strictly translate to the type of flywheel necessary as well. After the flywheel is well balanced, the clutch assembly can then be mounted on the flywheel with the friction disc very carefully centered. We reached out to Dan Jenkins of Fidanza Performance, David Norton of SPEC Clutch, and George Hovsepian of Quarter Master. The World's largest Achieve better results than static balancing with a simple set up, and the tool below:https://www.emachineshop.com/dynamic-flywheel-balancing/ Your dime do what you want but over the years i have seen and heard about many non Mini machine shops and their opinions of what needs to be done and not and the engine failures/problems soon after re builds. The SFI Foundation, Inc. (SFI) is a non-profit organization established to issue and administer standards for the quality assurance of specialty performance and racing equipment. This translates to a safer and smoother drivability on the street. The factory . Feel free to call us 208-453-9800. The question is, do enthusiasts have to balance the parts themselves? 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. Just my 02c. Ideas or links to other posts welcome. Cause you know while you're balancing it, you could always take off a few lbs. lol, any race rules where you can "balance a flywheel" please they're shaving off every ounce of weight possible claiming it was necessary for balancing because no one is going to check the damn flywheel, After starting my tear down, i realized how bad my flywheel, PP, and clutch plate really is. Copyright 2021 action clutch. Colin Mc Rae MBE 1968-2007.Give a car more power and it goes faster on the straights,make a car lighter and it's faster everywhere. Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum. As such, the flywheel can obtain hot spots due to the excessive friction and heat over time, which in turn can cause vibration whenever its engaging and when the vehicle is under acceleration. I've come to realize that nothing has been done to this car by the previous owner's except for basic matinance, even though i was told other wise. A service shop may later add weight by welding small weights to the edge of the cover. David Norton, SPEC Clutch. Steve (CTR). Static is a good place to start but spinning the assembly is better also if you have the clutch plate centered in the assembly. balancing , align-bore, tell him, you want the competition package done on her. SPEC maintains a one-one-thousandth machine tolerance to assure a perfect rotational integrity, fast clutch seating, and maximized drivability. With certain factory applications,the OEM flywheel can actually be reused by having it resurfaced, creating a new layer of friction material for the clutch assembly and ultimately avoiding the cost of a replacement. I would order a new front pulley and damper. The balancing machine in the picture is supposed to have the piece being . In our hay day we got 17 sets of V8 heads out each day.
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