how to balance a flywheel and clutch

The posts are mounted to the plate base which should be on rubber mounts to the feet. Each manufacturer has its own unique process for creating flywheels. All rights reserved. The flywheel will be easy, the cast weight will be small for 28oz early style, and large for 50oz . 3912 Whittier BlvdLos Angeles, CA 90023(323) 269-6051. When suspended with the marks 120 degrees apart, the unit hung to one side. This left me with about 14 grams out of balance. 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 high-performance applications of any sort, there comes a time when the capabilities of the vehicles OEM clutch assembly will have to beevaluated. Colin Chapman. You may want to go ahead and step up to billet steel. Jenkins/Fidanza:Both styles of flywheel can be found on the market. Steve (CTR), Maybe I should not go here, but I would not bother with a rebuild damper/ balancer. Its recommended to balance the entire assembly as a whole after verifying the tolerance level of the flywheel itself. Flywheel Tolerance What Is It? Also of mention is that sometimes shops balance the flywheel . 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. I'm sure it will be just fine it was before. I now have a noticeable vibration above 3000 rpm. 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! 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. 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. Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum. x=nIyX\hdw`1JD){58QY$eq_[>6?7|%Y5yVIIz,^u[mU4]urvy]&E$r Wg(G'jyiV%' 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. 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). flywheel can obtain hot spots due to the excessive friction. A centre punch works pretty well to mark the parts. Or it will at least be very costly. All of your factory flywheels were cast iron, six-bolt pattern, and also fifty-ounce imbalance. We know all too well how difficult and confusing it can be to match a flywheel with the appropriate clutch. 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. Out of the box, the LCE flywheel was out of balanced around 36 grams (approximately) as I remember. Now from '86 to '95, all the clutches were upgraded to the 10 1/2 inch version that we know today. PRESSURE PLATE BALANCE - Whenever balancing a pressure plate to a flywheel, do not weld on the clutch lever . After rearranging the parts (moved the clutch housing and spring plate marks closer together to offset the flywheel) it hung level. ), http://www.clubcobra.com/photopost/dall_Small_.jpg, ERA #732 - Pics from the ERA Owners Gallery. The balancing machine in the picture is supposed to have the piece being balanced spun , not too fast maybe 800 - 1000 rpm . The boys here get $125. PLASTIGAUGE the crank bearings? Our job is to analyze the original flywheel and engineer major improvements. He indicated that 4 cylinder cranks usually are fine and don't need balancing. Due to the loss in mass, these tend to require changes in your driving habits which can be a bit irritating for daily use. As long as it can be mounted on his balancer. The World's largest Action Clutch Chromoly Lightweight Flywheels have three major benefits: low weight, low inertia and high thermal capacity. p.s. Steel is the best friction surface for most materials because it offers a good seatability and wear pattern. "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. A quick image of a SPEC clutch and flywheel combination being manufactured. We make sure to not go too light to prevent poor idle and driving issues like some of the ultra-lightweight brands. SPEC reduces unwanted weight on a vehicles driveline by reducing mass in its entire clutch assembly, starting with its flywheel. To clear up the confusion, lets discuss the differences between the two. The flywheel is an important part of the clutch assembly. He doesn't need the clutch. 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. While the flywheel is not an obscure component to comprehend, selecting the proper flywheel for a specific application is often shrouded in mystery for manyenthusiasts. 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. The heavy race paddle disc should be balanced. The combination is better known as Atomic Green for its color. According to Vizards book crank balancing is fine if you have the cash and the time, but not really cost-effective. All our aluminum flywheels are CAD designed/engineered and precision CNC machined from top quality billet aluminum forgings to strict tolerances for optimum performance and reliability. The correct tolerances would be matched to what the OEM toleranceis, although this will vary per application. The lighter and smaller it is and the closer the weight is to the rotational axis, the quicker the engine will be able to reach its maximum RPM. These would be resurfaced like a conventional flywheel and do require replacement once the surface gets to its minimum tolerance. <>>> Steve (CTR). fyi - for stock bellhousings, you have to match the flywheel size with the bellhousing & the flywheel determines your clutch choices. Check out LMR's flywheel guide for all of the answers! Steve (CTR). I have been retired from there 15 years. I was able to then swap out two steel clutch bolts with two titanium bolts I had; since each Ti bolt was 5 grams less than the steel bolts, this left me with about 4 grams or so out of balance. The larger balancing cones used on the static balancer came from No Mar as I remember (for their BMW motorcycle kit). If you read the manual it also states that the flywheel and pulley aren't keyed so you have to scribe the items to the crank and measure the balance pins depth, look at . you can also have the individual parts (just flywheel or pressure plate) balanced individually but to get the nTH degree balance as an assembly. Please Select your car type Below: Select Your Car Type to Ensure Proper Part Fitment. The shop is not in ahigh rent district and that probably helps. 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. The Fora platform includes forum software by XenForo. After the flywheel is well balanced, the clutch assembly can then be mounted on the flywheel with the friction disc very carefully centered. Balancing doesn't "have" to be done, and race builders also alter the balance to allow for some positive benefits by overbalancing. 833 likes, 23 comments - Weekend Automotive - Saurabh kmph (@saurabh.kmph) on Instagram: "It was not an easy job to make an Indica run.. @trollkul just nailed it and . I recently purchased a Hays clutch kit along with a new flywheel and in the "Dos & Dont's Problems" paperwork from Hays. 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. %PDF-1.5 That must be a clutch only price. The ability of the flywheel to control heat and maintain tolerance can also prolong clutch performance and wear under extreme conditions. A service shop may later add weight by welding small weights to the edge of the cover. 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. ESP. I trust my engine rebuilder implicitly. It should also be checked But you should take the pair to a good machine shop and have the dynamic balance checked and adjusted if necessary. 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 . All flywheels are balanced and thoroughly inspected for quality and fitment. Hovsepian/Quarter Master:A heavy flywheel (to a certain extent) allows for an easier transition from a standstill to operation. I'm sure you do as well. The tighter or closer to zero the tolerance, the more balanced the unit will be. 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. 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. A quick weight comparison between the C5's OEM clutch vs the new SPEC clutch shows a respectable 15-pound weight reduction. It needs to be spun up and dynamically balanced. With the combination of materials, Chromoly has an outstanding strength to weight ratio and is stronger and harder than standard 1020 steel or other aluminum flywheels on the market. Out of the box, the LCE flywheel was o. Static is a good place to start but spinning the assembly is better also if you have the clutch plate centered in the assembly. Clutch types. Someone who has been rebuilding engines for 30 years+ and is still in business should know what they are doing. set cam timing??? From the factory, your '82 to '95 Mustangs came with a ten-inch clutch and was a fifty-ounce imbalance flywheel. This is the heavy spot. Also, enthusiasts must prioritize performance and drivability. 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. I want to register an account for free right now! We reached out to Dan Jenkins of Fidanza Performance, David Norton of SPEC Clutch, and George Hovsepian of Quarter Master. 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. They are now taking the clutch back out to balance the flywheel and clutch together. Weve all heard stories of clutch chatter, balancing issues, and possible damage caused to the driveline components. That said I agree with Steve and Malcolm about balancing the crank. With so many performance flywheel options on the market today, it can be difficult to understand all of the different items available. Pull your crank and have it balanced then have them add parts and balance each as they go. engine side and face side. For starters, you have your stock style, cast iron replacement flywheels. Jenkins/Fidanza:The most common material types includesteel, aluminum, and nodular iron. Achieve better results than static balancing with a simple set up, and the tool below:https://www.emachineshop.com/dynamic-flywheel-balancing/ The friction surface material and inertia most directly affect how the clutch feels to the end user, and will ultimately dictate other factors, such as performance and wear life., Our flywheels are designed as a direct OEM replacement, which means they willmeetor exceed all factory tolerances. Build your own custom newsletter with the content you love from LSX Magazine, directly to your inbox, absolutely FREE! Just order the clutch/flywheel from DTE. If youve ever purchased a new clutch assembly, youve probably noticed that many aftermarket assemblies do not include a flywheel, and theres a reason for that. Every company manufactures its flywheel for different applications, power outputs, and overall drivability. If i hadn't begun working on my car, my clutch would of only lasted about a month, give or take. <> Balancing a clutch assembly is crucial to its ability to properly function, and it all starts with a balanced flywheel. Discussing Weighted Versus Lightweight Flywheel Options. JavaScript is disabled. Which made it a very common upgrade to make the switch to a 10 and 1/2 inch clutch whenever you go to swap out the clutch. 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. The lighter a flywheel is, the faster it spools up RPM; but also means the harder it is to start from a standstill. <> But it still merits checking, and some people may be more particular (especially for a race engine). Balancing a flywheel is very important for rotational integrity and safety, and drivability. cam and bearings, frt. PP and flywheel get balanced as an assembly, the disc does not. 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. A flywheelimbalance can destroy engine bearings and other driveline components if the flywheel is not balanced, and also not in its allowable tolerance. Action Clutch specifically designed our Chromoly flywheels for a reduction in weight and inertia for better engine response. The LS6 engine is balanced externally with balancing pins in the. 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. For not a lot of money the crank could/should be done also. Early Access To Exclusive NEW Products, News, Tech & MORE! 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. Another broken crank would suck!. Who balanced your previous motor? 2 0 obj "the disc can land anywhere" - I shoulda thought of that! Let us know how it goes. Our aluminum flywheels are made from 6061-T6 Billet Aluminum or 1045 / 4140 Billet Steel depending on application. The two main types are those with a replaceable friction surface allowing for easy replacement and rebuild, and those that are more conventional having a friction area that can be resurfaced within factory specifications. 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. Hovsepian/Quarter Master:If an enthusiast plans to re-use the existing flywheel for a new clutch assembly, wed recommend the flywheel be machined to a new tolerance. The threaded rod of the static balancer are inside of some .250 wall thickness tubes, which helps reduce deflection and also aids in rotational surface against the bearings on the static balancer. With so much inconsistency in enthusiast reports of flywheel performance, we felt this was a topic that merits discussion. It's actually done with bob weights on the journals, with harmonic, flywheel, and clutch installed - and a fudge factor thrown in for the. The factory might use round weights to be riveted onto the edge of the cover. OK, I just found out my engine rebuilder DOES do balancing. 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. The best place to go for anything Mustang related! Many applications have little-to-no drivability downsides when utilizing a light flywheel. 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 . I think that bolt in the back of the Flywheel may hit the block anyways. Dan Jenkins, Fidanza Performance. Not that it matters but FYI I began working in the auto aftermarket in 1965 at age 16 with a work permit. FOLLOW: In the 25 years I worked at an auto machine shop I'd guess I worked on over 1000 balance jobs. All I have seen are junk. Really !!!!! An easy test is to have the flywheel checked to see if it's zeroed. Welcome to Club Cobra! For a better experience, please enable JavaScript in your browser before proceeding. For example, a flywheel manufactured out of 2024-aluminum will work excellent when paired to a button-style race clutch. Were a forum community dedicated to the Chevy Z06 Corvette. An example of this would be a vehiclesdriveline set-up orthe type of clutch being used (pull versus push style). 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. Hovsepian/Quarter Master:It is possible to resurface a flywheel in most cases. Now from '86 to '95, all the clutches were upgraded to the 10 1/2 inch version that we know today. Little known fact Vizard has driven my race cars and I have a collection of pre publication manuscirpts I have proof read for him. CA, Cobra Make, Engine: 1989 KCC from South Africa Right Hand Drive. Come check out discussions on performance, specifications, modifications, purchasing, maintenance and more! I think that bolt in the back of the Flywheel may hit the block anyways. Free shipping on all orders $100+ Lower 48 states only. PP and flywheel get balanced as an assembly, the disc does not. Reply. The flywheel also provides the ability to start the car, as it is geared on . Do what you want to do. As for the clutch disc don't bother with it as it is light and stops in a different place each time. MSC offers new as well as several other suppliers. The whole assembly is then spun up to measure vibration, and the clutch cover (pressure plate assembly) is then balanced. Cobra Make, Engine: Everett-Morrison LS1. 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. In most cases, a ring gear can be replaced after starter damage or failure, without the end user having to purchase a completely new unit. Another thing to remember is that pretty much all of your aftermarket billet flywheels are going to be SFI approved. Additionally, on the manufacturing side,we heat press, fasten and in certain applications even weld ring gears to our flywheels. This is, of course, after the flywheel has been balanced as well. Chromoly is an abbreviation for chromium-molybdenum steel" due to its property of incorporating alloy elements chromium and molybdenum. I just had the Spec III put in my car using the stock flywheel. That must be a clutch only price. 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. Our lightweight flywheels improve performance and assist with quicker revving. They are specifically made for light to high tuned racing cars that see drag racing, drifting, autocross, street use, and rally events. 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. The question is, do enthusiasts have to balance the parts themselves? If you have a zero balance motor it means that you need a flywheel balanced to zero. 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. Sabeo.m I just bought a nice used FW off fleeBay. However, we break down the pros and cons of cast iron, billet steel and billet aluminum pressure plates to guide you down the right path when making your purchase. The bike is back together and it is very smooth. As we mentioned earlier, the flywheel is a specific component which must also be matched with the correct clutch assembly for that application. Norton/SPEC:The flywheel is the component that contributes the mostto the performance and the overall drivability of the clutch system. All rights reserved. I would balance them before I put them in so you don't have the same problem I'm having. :cheers: MTI 383 Stroker Motor. Within these materials, a flywheel can have a specific grade of metal, such as chromoly-steel, 1040-steel, 6061-aluminum, or even 2024-aluminum. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. For example, a very light flywheel can make a clutch feel more aggressive. Your cast iron flywheel, obviously, that's a great stock replacement even for mild bolt-ons. No vibration before or after the 1500 rpm mark. let them pistons reach for the stars. Broken cranks, cracked bell housings, are all a result of out of balance. Every piece also needs to be indexed so that you get back in the exact place that it was balanced. Can't wait to get it installed now. To balance it, you would drill holes, not weld or bolt anything to the flywheel. Steve (CTR). If you hold a chalk to the side of the flywheel by a fixed mount, it will leave a mark at the same spot as it rotates. These types of vehicles require a bit more weight to maintain proper idle and to get the momentum to move off the line. We check for many things when engineering a flywheel, such as overall balance, flywheel clearances or how improve the design. 1 0 obj You also need to know for sure what imbalance the flywheel and harmonic balancer are that you have. Crank flange bolt pattern/sealing arrangement. We will safeguard your e-mail and only send content you request. Chromoly flywheels are an excellent choice for any performance or stock build. 475 rwhp 450 rwtq. 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. 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." 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. Like many other go-fast parts, the flywheel is not a one-size fits all type of component. When I was in the biz 4 cyl balance was $125. The whole assembly is then spun up to measure vibration, and the clutch cover (pressure plate assembly) is then balanced. Copyright 2021 action clutch. Our flywheels are built for racing and performance. What I do could be called silk purse. 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:Steel, aluminum,and titanium are most commonly used to manufacture a flywheel. 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. Decent used stuff comes up on the bbs every so often if you are not in a hury You can balance individual components but the balancing isn't perfect. I would send ALL of it to a good machine shop & have it balanced together as a unit. The flywheel is a component of a manual transmission that helps to transfer power from the engine to the transmission. Manufacturer of Performance Clutches and Flywheels Since 1962. I would order a new front pulley and damper. This translates to a safer and smoother drivability on the street. Hopefully those motors have ALL the balance in the harmonic balancer & there are no extra weights on the flex plate/converter. 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. Reducing weight (or MOI) will reduce the time it takes to reach maximum RPM, which is optimal for most road-racing and autocross applications. Just my 02c. and maybe re-balanced any time it is machined for clean-up or weight reduction. Not a lot of $ so you may be good tehre. Saleen is a registered trademark of Saleen Incorporated. Passwords are case-sentive.If you continue to have problems click on the Help Icon for additional options. <>/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>> Any factory engine or any rebuilt factory engine is going to take a 50-ounce imbalance flywheel. . Aug 31, 2002. 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. If you don't have your shaft balanced you will have wasted your money. When it comes to engine and transmission work, it can be a pain to have to do anything twice. I want to register an account for free right now! 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. For the small cost while it is all apart and especially as it is a 1275 3 bearing engine why wouldn't you do it ?????? This is what I think others may dissagree. Four cyl engines have the worst natural balance characteristics. The flywheel should be zero balanced and the rotating assembly balanced to itself. Feel free to call us 208-453-9800. Makes sense. flywheel. However, in the world of aftermarket flywheel options, this isnt always the case, as it varies from application to application. Any usage or mentions of these terms throughout our website and print ads are used for identification purposes only. Any time you're going to be using a clutch that has a puck typeface, semi-metallic, ceramic, doesn't matter. So, instead of drilling balancing holes into my brand new flywheel (which is really the correct way to balance everything individually), I just opted to offset the heavy point of the flywheel against the light point of the clutch cover. That's only good for static balance. Do it right once or continue payingits an easy choice really!! ENGINEERED FOR BOTH STREET AND RACE APPLICATIONS. Factory flywheel was cast iron, and six bolt pattern, and also 50 ounce imbalance. If the flywheel is too worn and cannot be resurfaced, then it is advisable to replace the whole thing with a new part. The flywheel mates to the clutch pressure plate and crankshaft, and the pressure plate can decouple from the flywheel when the clutch is disengaged. What is SFI? I built my first Cooper S engine in 73/74 and when I started it and got it running perfect it shook so bad at certian RPMs I took it apart and had it balanced and installed new rings. All of our aluminum flywheels include a hardened steel friction surface that is designed to be replaced versus being resurfaced. lotos plasma cutter problems,

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