how to balance a flywheel and clutch

From the factory, your '82 to '95 Mustangs came with a 10 inch clutch. YES! Roush is a registered trademark of Roush Enterprises Inc. Eaton is a trademark of the Eaton Corporation. Balancing a clutch assembly is crucial to its ability to properly function, and it all starts with a balanced flywheel. Related problem. All rights reserved. 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. Always remember to do it right the first time, because its done wrong, there might not be a second time. you can also have the individual parts (just flywheel or pressure plate) balanced individually but to get the nTH degree balance as an assembly. 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. Whether youre searching for a flywheel application for drag racing, autocross, road racing, or a daily driver, well help make your choice easier by discussing different materials and manufacturing processes. dogdo yourself fav. We will safeguard your e-mail and only send content you request. I managed the largest auto machine shop in eastern Va. for 25 years. A service shop may later add weight by welding small weights to the edge of the cover. Copyright 2023 Endgame360 Inc. All Rights Reserved. Hovsepian/Quarter Master:Because the flywheel is a constantly movingmechanical component, and is a sequenceof the drivetrain, specific tolerances are required to maintain the balance and alignment with theadditionalmoving parts in the drivetrain. The flywheel will be easy, the cast weight will be small for 28oz early style, and large for 50oz . : For registered members this ad will NOT show, Location: Palma de Mallorca, Spain, Sep 21, 2010. for teh 383 to balance correctly without an expensive flywheel any 86 and up single rear main seal flywheel and get a balance plate that bolts between the crank and flywheel fyi these plates are available for 454 as well helps save money when ya already spent a pile on small block stuff. I keep a crank on hand that has been balanced by it's self to use as a mandrel to mount front or rear bits for balance. In addition, engine balance there are three other important factors to consider. The flywheel is an important part of the clutch assembly. It's actually done with bob weights on the journals, with harmonic, flywheel, and clutch installed - and a fudge factor thrown in for the. #6. This is done by adding weight to the outer extremities of the cover. If it's a puck-type clutch, you're going to want to use either a billet steel or billet aluminum flywheel because a cast iron flywheel will just chew itself up. Great for a road racing application, andnot so great on the street or drag strip. Crank flange bolt pattern/sealing arrangement. Do what you want to do. "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. You need to check with the shop that did your balance work or any of your machine work to find out what flywheel you need to order. After the install I noticed a vibration at 1,500 rpm. <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/Annots[ 22 0 R] /MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Many enthusiasts can agree that a lightweight flywheel is ideal, simply because they have alower MOI. The whole assembly is then spun up to measure vibration, and the clutch cover (pressure plate assembly) is then balanced. Jenkins/Fidanza:One of the biggest issues that an enthusiastmay overlook is ensuring the friction area is clean of debris and greases or oils before installing the flywheel. <>>> 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. 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. 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. It only cost me $20. They make/rebuild clutches with Kevlar and ceramic, and can balance the flywheel and pressure plate (not disc/diaphram). 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. balancing , align-bore, tell him, you want the competition package done on her. For example, a very light flywheel can make a clutch feel more aggressive. I'm sure you do as well. In the 25 years I worked at an auto machine shop I'd guess I worked on over 1000 balance jobs. Spend another $20 and get the crank checked, piece of mind is worth it. Cobra Make, Engine: Everett-Morrison LS1. This video shows how I went about balancing my LC Engineering flywheel (35 lb steel) and AISIN CTX-107 pressure plate. Do it right once or continue payingits an easy choice really!! 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. Every company manufactures its flywheel for different applications, power outputs, and overall drivability. endobj He indicated that 4 cylinder cranks usually are fine and don't need balancing. The heavy race paddle disc should be balanced. Early Access To Exclusive NEW Products, News, Tech & MORE! ESP. The lighter a flywheel is, the faster it spools up RPM; but also means the harder it is to start from a standstill. 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. In our hay day we got 17 sets of V8 heads out each day. Check out the full installation of this SPEC Clutch on our autocross C5 Corvette here. 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. As you drive a manual transmission car, the clutch is constantly coming in contact with the flywheel when you release the clutch pedal. As long as the clutch and pressure plate bolt up and have the proper static pressure engagement then they will work together. The boys here get $125. , spec's from the shop manual which you can buy from Don, to him.. ask him nicely if would assemble the lower end for you. On a racecar, the flywheel is often times made as small and light as possible. Cobra Make, Engine: Contemporary with 482 KC/SO, TKO600,IRS Jag/AMP, 3.54 Salisbury PL, Now that I have to order a new shortblock to replace my busted Pond sideoiler by courtesy of Eagle Cranks I have to separately balance the flywheel with the pressure plate attached, and also the harmonic balancer. The manufacturers we involved in this article have dedicated an immenseamount of research and engineering to develop a high-performance, highly capable flywheel for virtually any application imaginable. Ideas or links to other posts welcome. I try for the very best result. Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. For not a lot of money the crank could/should be done also. cam and bearings, frt. Our flywheels are engineered to improve throttle response, quicker shifting, and reduces clutch wear depending on your drivability. As long as it can be mounted on his balancer. Action Clutch Flywheels are designed and tested to ensure the best quality and performance. Spec 3 and Fedenza, no balancing no problems. You also need to know for sure what imbalance the flywheel and harmonic balancer are that you have. All of our aluminum flywheels include a hardened steel friction surface that is designed to be replaced versus being resurfaced. "the disc can land anywhere" - I shoulda thought of that! Our job is to analyze the original flywheel and engineer major improvements. Also, enthusiasts must prioritize performance and drivability. Within these materials, a flywheel can have a specific grade of metal, such as chromoly-steel, 1040-steel, 6061-aluminum, or even 2024-aluminum. Posts: 7,924. 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. Jenkins/Fidanza:Although a lightweight aluminum flywheel in certain instances is sufficient, enthusiasts may need a flywheel with more mass, or even one that has less mass than a standard aluminum lightweight flywheel. I want to register an account for free right now! Hi guys. I guess that's why matinance records are so important when buying an older car especailly a 911. As received, a new flywheel from the factory should be balanced within some industry standard, like a few grams or a few ounce-inches. Saleen is a registered trademark of Saleen Incorporated. This is the heavy spot. Or it will at least be very costly. so how many engines have you guys balanced????? Hovsepian/Quarter Master:Whether its a lightweightor neutral weightedflywheel, itmust be balanced no question about it. An easy test is to have the flywheel checked to see if it's zeroed. Just my 02c. They have adapters that will allow you to balance anything if the center hole is clean without burrs. 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. I know this sounds funny because the crank ass'y should be balanced in it's own right. The shop is not in ahigh rent district and that probably helps. Balancing doesn't "have" to be done, and race builders also alter the balance to allow for some positive benefits by overbalancing. What is Chromoly? The original rubber is probably hard as a rock now. Check out LMR's flywheel guide for all of the answers! Here's why: Although the C5 does have its clutch and flywheel attached to the crankshaft, as has been done with all Vettes since the '53, the car's driveline differs from that of its predecessors . Any factory engine or any rebuilt factory engine is going to take a 50-ounce imbalance flywheel. CA, Cobra Make, Engine: 1989 KCC from South Africa Right Hand Drive. Another broken crank would suck!! Now from '86 to '95, all the clutches were upgraded to the 10 1/2 inch version that we know today. don't even ask him " how much " when he calls and says it ready, just go down there with a wad of cash and pay the man and thank him. 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. FOLLOW: Jenkins/Fidanza:Both styles of flywheel can be found on the market. <> 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. After the flywheel is well balanced, the clutch assembly can then be mounted on the flywheel with the friction disc very carefully centered. That component is the flywheel. If reusing the old pulley check for seal wear and possible wear in the bore and keyway. Action Clutch specifically designed our Chromoly flywheels for a reduction in weight and inertia for better engine response. An example of this would be a vehiclesdriveline set-up orthe type of clutch being used (pull versus push style). 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. Randy, I've been using Fort Wayne clutch in (Big surprise here) in Fort Wayne IN for years. Yea,..you have to have everything that rotates including the washers and bolts and..andand send it to the shop and watch them balance it with the crank and all the parts attached to the crank. Page 1 of 2 - Flywheel Clutch Balancing Information Help Please - posted in Injection Mini Specific - SPi/MPi: Again hello to all you good mini people and Spi lovers just nudging along with my build, getting to putting the box back on and then the flywheel and clutch As you can see from the pictures the original Spi flywheel is balanced with some serious little holes drilled out in strategic . Norton/SPEC:How a specific application responds to driveline inertia depends on vehicle weight, gearing, and engine power curve. For starters, it provides the initial inertia to get the engine running and also provides the rotational inertia to keep it going, otherwise, the engine would stall when you lift your foot off the gas. Flywheel Tolerance What Is It? Hope this helps some. We check for many things when engineering a flywheel, such as overall balance, flywheel clearances or how improve the design. 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. 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. I called Mcleod before calling the shop that did the install and Mcleod said I needed to balance the clutch to the flywheel before . front dampner and flywheel. Fifty tonne power station turbines are balanced this way. Also replaced axles (Leobro's) No problems of this type before engine drop. For example, a flywheel manufactured out of 2024-aluminum will work excellent when paired to a button-style race clutch. Reducing weight (or MOI) will reduce the time it takes to reach maximum RPM, which is optimal for most road-racing and autocross applications. I want to register an account for free right now! What is SFI? When spinning the slowly the posts will rock side to side. Clutch types. Yea,..you have to have everything that rotates including the washers and bolts and..andand send it to the shop and watch them balance it with the crank and all the parts attached to the crank. All Fidanza Performance aluminum flywheels are made from high quality 6061 T6 billet aluminum to deliver the optimum in strength and durability and are often SFI approved for race use just like steel flywheels. When it comes to flywheel options, more specifically, a lightweight flywheel, many enthusiasts worry about the issues associated with them. A device like that will show the heavy spot at 6 o'clock but it doesn't tell you how much to take off, bit of "hit and miss". Check for imbalance by revving a known good engine to 2500-3000 rpm with the clutch pedal depressed and feeling for any flywheel vibration. PLASTIGAUGE the crank bearings? endobj As dear old dad said advice is worth what it costs you and this I give you free. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. Not saying it would be a bad choice in the streetcar, but you will notice you take a little bit more clutch slip to get the car moving. 2 0 obj do you know how to set the ring end gap? Please try again. We make sure to not go too light to prevent poor idle and driving issues like some of the ultra-lightweight brands. I had a really bad vibration. The balancing machine in the picture is supposed to have the piece being balanced spun , not too fast maybe 800 - 1000 rpm . On top of that, considering how long it takes to change out a clutch and flywheel set, it's probably a good idea to do everything the correct way the first time around. I would look elsewhere and for a knowledgeable Mini person to do my work if i were you, a Mini crank absolutely needs balancing don't do it and you will regret it down the road. Mustang & Lightning Tech, Articles, How To Videos, 94-04 Mustang Tech, Articles, How To Videos, SVE Flywheel - Billet Steel - 10.5" - 0/28/50oz (79-95) 5.0/5.8, Cast Iron Flywheel - 10.5" - 50oz (79-95) 5.0, McLeod Flywheel - Nodular Iron - 10.5" - 50oz (79-95) 5.0/5.8, Ford Performance Flywheel - Billet Steel - 10.5" - 50oz (79-95) 5.0/5.8, Ram Flywheel - Billet Steel - 10.5" - 50oz (79-95) 5.0/5.8, McLeod Flywheel - Aluminum - 10"/10.5" - 0/28/50oz (79-95) 5.0/5.8, Ram Flywheel - Aluminum - 10.5" - 50oz (79-95) 5.0/5.8, Ram Flywheel - Billet Steel - 10.5" - 28oz (79-95) 5.0/5.8, Ram Flywheel - Aluminum - 10.5" - 28oz (79-95) 5.0/5.8, Ford Performance Flywheel - Billet Steel - 10.5" - 0oz (79-95) 5.0/5.8. Add to that the flywheel and clutch when used on an externally balanced crank need to be balanced with the crank assembly which means the engine has tp come apart. Granted, it does make for a smoother revving engine, that is assuming that it is out of balance in the first place. Hovsepian/Quarter Master:It is possible to resurface a flywheel in most cases. Price of balance went up. Had two crank grinders running all the time. I have nothing to gain from leading you astray. Location: San Marcos california, 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. This is known as "Detroit Balance". Any of your stroker motors or engines that have had custom balancing work done are typically going to take a twenty-eight-ounce imbalance, but it could use a zero neutral imbalance. Its recommended to balance the entire assembly as a whole after verifying the tolerance level of the flywheel itself. JavaScript is disabled. If i hadn't begun working on my car, my clutch would of only lasted about a month, give or take. Who balanced your previous motor? A quick weight comparison between the C5's OEM clutch vs the new SPEC clutch shows a respectable 15-pound weight reduction. Out of the box, the LCE flywheel was out of balanced around 36 grams (approximately) as I remember. 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. set cam timing??? The posts are mounted to the plate base which should be on rubber mounts to the feet. Rotational integrity is maximized, as well as the ability to provide a perfectly flat surface for the clutch disc to optimize wear and performance. With so many different choices readily available, we wanted to know how the different materials can affect the overall integrity of the flywheel and its drivability characteristics. The clutch cover was also out of balance (about 20 grams). Weve all heard stories of clutch chatter, balancing issues, and possible damage caused to the driveline components. 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. Oct 27, 2007. There is a thread describing this on here. This question is important because many enthusiasts have claimed that depending on the material that the flywheel is manufactured out of, it can inadvertently affect the vehicles drivability. Steve (CTR). The tighter or closer to zero the tolerance, the more balanced the unit will be. FW Clutch have rebuilt a number of NLA clutches for vintage cars we've worked on. Each manufacturer has its own unique process for creating flywheels. We want to get to know you.Stay connected with us. To clear up the confusion, lets discuss the differences between the two. 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. We'll send you the most interesting LSX Magazine articles, news, car features, and videos every week. But you should take the pair to a good machine shop and have the dynamic balance checked and adjusted if necessary.

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