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How To Balance an Engines Rotating Assembly
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- Опубліковано 4 вер 2024
- Check out Kalvinator Engines: www.kalvinatore...
Extended Version of this video available here: www.ericthecar...
For those of you not aware, the engine in my #FairmontProject has a name, #DarkMatterPikachu. Here's how it got that name.
• How #DarkMatterPikachu...
In this installment of the Engine Build Series of the #FairmontProject, Kevin Frische shows us how to balance a rotating assembly. Some may know this as 'balancing the crankshaft' however, this is something of a misnomer in this case because we also include the flywheel and harmonic balancer.
Honestly this is one of my favorite videos in this series as it covers something I've never seen done before. So the next time you're getting an engine build, I'd highly recommend getting your rotating assembly balanced. Especially if you're going to be using an aftermarket crankshaft. If not, it could mean a short life for your new engine. If you do opt for this service, you'll have a smooth, fast revving engine.
Previous video in the series: • #DarkMatterPikachu's E...
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The best place for answers to your automotive questions: www.ericthecarg...
Camera: Brian Kast
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Engine Details
Displacement: 363cid
The Block: www.pbm-erson.c...
The Crank: www.pbm-erson.c...
The Heads: performancepar...
Compression: 8.9:1
The Cam: Comp Cams custom grind: 222@.050" 222@.050 .357"lobe lift .571" valve lift (1.6 rocker) .351" lobe lift .562" valve lift (1.6 rocker) 114º separation 4ºadvance
Modified: Edelbrock Performer RPM intake
The Carburetor: www.holley.com...
The Distributor: www.msdperform...
The Ignition: www.msdperform...
The turbo Kit: www.on3performa...
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In a former life a long time ago it was my job to balance V8 crank assemblies for the Australian Chrysler engine plant.
I was allowed 5 min to perform the task of fitting the Harmonic balancer and either flex plate and torque converter or flywheel depending on the model build scheduled, then balance the assy and deliver to the assy line. I always strived to achieve the magic 0 and 0 reading on the balancer as a matter of pride.
I loved that job because the day just disappeared once you got the rhythm going.
Cheers Eric
That would have been an excellent job to do, as a fellow Aussie I envy people like yourself who got a chance to work in such an amazing industry, before the Australian industry disappeared that is :(
GM took everything holden did.... used it their own cars....
then shut them down...bullshit.
just like how the 3.8L v6 with a supercharger that buick made got killed off.....it was beating corvettes due to being lighter, but almost making the same power.
GM dontlike competition....
Yeah but YOUR 0-0 was actually 5-7 grams left or right of the line. After all it WAS a Plymouth. :-) :-) :-)
@ Getbent97 Politicians signed the Lima declaration in December 75' which was the plan to deindustrialise Australia...
Darrow for the Prosecution no not our motors they were Australian built and designed no USA parts
You can tell this machinest was a teacher, he is VERY knowledgable and very good at explaining things!!
Oh and that engine block is a work of art!!! ALOT of thought and engineering went into it and its beautiful!!
This is awesome to watch and learn!
I'm very happy to hear that.
It's really relaxing watching a machinist do his work. Nice to see a pro at work. Thanks for the field trip, +EricTheCarGuy
Man, this guy is a wealth of knowledge in terms of engines.
this guy is a damned good professional. wish there was a machinist like him in my area.
He also seems like a good guy to work for.
DodgeRam HEMI FIXES and your point is?
DodgeRam HEMI FIXES wow I didn't know that working in a machine shop makes you a mechanic ? Oh that's right he's a millwright ‼️you don't know SHIT SON but here's a ⭐️ for your efforts
waste more of ur no life reading my comments sweatheart xo love you!!xo
Not too often you get to see inside a machine shop, nice one Eric.
Apparently you're not a "mechanic" or even a "DIYer" if machine shop visits are "not too often" in your world.
@@deeremeyer1749 Pretty sure he's talking about builds online. Usually they just come back with the finished product.
I see the inside of the machine shop every time I send my engine parts out to be machined lmao. I even shoot the shit with my machinist.
Very well done. I have had engines balanced and have seen balancing procedures but I have never seen it so well explained.
A special note to Kevin Frische, Thanks for being A good teacher to our friend Erick, We know he's a pain in the butt with all his questions. and his side kick Brian following you all around. Your a good Dude to put up with our Friends from ETCG. TTFN.
Nice to see a machine shop which LOOKS like a machine shop. I see so many high tech, CNC shops which look more like medical research labs. I retired, but got roped into working part time for a friend at his shop and it's also more "old school". As a matter of fact, still have all dial calipers and mic's...Very nice older machines. A couple are digital but no real "computerized" machining at all.
That guy is awesome; he has such a great attitude toward his work and is clearly exceptionally skilled without any sort of pretense.
I love machinists and dearly wish I could have spent my youth around one, learning the magic of metal.
Man the way this guy is full of knowledge and the way he explains it makes me feel comfortable, to the point that I am thinking about rebuilding my engine and not get taken for a ride when I go to the machine shop.
Eric, this is BEST video, explanation and exposing the mystery of crankshaft balancing on UA-cam ever. I still can’t exactly gasp my mine on the procedure of positioning the weight at the correct location of angle of the weight clamp blocks. I get the weight of two loaded rods on one journal, but the position has to be a relationship of the two at the top when the stop, as the bottom is still rotating. 98% of my visual skill-set has captured and saved to long-term memory of the entire process. I can only save enough in an early medical retirement from long days of hard work to get into a machine shop to get a clear idea of the counter-weights position to be clear, but Eric, you and you machine shop buddy has taken me miles on the reciprocating assembly & machining process in the back room. I was lucky at 13, to work for a two man shop (Owner and me) who told me he learned more about engines in 7 years in a speed shop machining back room, than he learned in 28 years in a Chrysler dealer. I was the apprentice sponge and his gentle even manner taught me well. WoW! When I grow up, I want a 20” wide belt sander with a 3 foot bed. Thank very much, so enlightening Eric!
Long time subscriber. ASE Master Tech since 1978 - Retired
PS. June 17th 2020 is my last lumbar fusion at the L3-L2 level at my shoulder blades. The rest is fused and makes it hard for a 6’3” guy to pickup anything dropped. It’s just one of 3 more metal parts I need, at 62!
Pain sucks and working from 7AM to 9PM for decades, isn’t the whole reason, but most of it, except for my lumbar caused by one boss man. Hope we never meet.
as a steel fabricator and auto technician... I love this video!!! I'd like to visit my uncles shop but he's a few states away...thanks for allowing me to peer into the world of engine machining!!!
It looks so crude drilling large holes, but thats just quickly removing most of the error weight, then the fun starts for real.
Slowly creaping up to the limits without overshoot must have taken bloody hours!!.
I like him, he wants it right, and he will get it.
Well worth the cost for perfection eric :-D.
Yea, he worked on this for more than 3 hours. Fun fact: the lighter your pistons and rods, the harder it is to balance the assembly.
True, and you are not using the lightest stuff out there. That's when you get to start doing knife edging and radius grinding the trailing edge, shaving the weights on the grinder and more. I was building for a couple teams who refused to have holes in the weights and ran some of the lightest parts they could get. Don't miss those at all...
I've considered the option of a fully rebuilt engine like this and the parts to rebuild it yourself. Now I understand why the second option is so much more expensive and worth every penny! This was a great video, thanks Eric for making it, and thanks Kevin for sharing what you do. Awesome!
++
Andy C This is FAR beyond a typical rebuild, this is a full custom engine. Good machine work costs $$ For a "normal" rebuild you can figure about $700-1,000 if you DIY most of the items and limit the machine work to a cylinder and line hone.
Or you can go all out and easily drop 30-40K into the engine. The all out race engines I built ran crankshafts that were over $3,000.00 each! And they still needed to be worked some.
As the saying says $peed Cost$ Money How Fast do You Want to Go ...
I truly admire that machinist. Not only has the knowledge but also the right attitude and sense of humor. c'mon...who wouldn't want to be friend of a guy like that?
Kevin seems like a really pleasant knowledgeable guy. Interesting video.
damn people who actually take there time to rebuild the engine with accurate measurement and actually checking cam lobe, piston clearance, deck warpage and checking crankshaft journal, etc has alot of patience... i admire them
This is the video i needed, im building a 331 stroker and this balancing issue has worried me sick knowing something needed to be done but not have a clue on what to do so this helped
This is going to be a killer, killer build! I don't even want to know how much time and money you have in this engine alone, but it's awesome you are making your dream a reality. Love these engine building vids. Thanks Eric
but ... imagine it comes all like this from the factory
Didn't know this amount of work was involved in engine building. Insane! Cheers Kevin and Eric!
Very informative video. I worked in a machine shop when I was younger, never got to this guy's level of mastery, but machining can be a very humbling experience. You can take metal out, but it is hard to put back in.
I like the part where you mock up the weight on the cranks, didn't know that's how it was done. Looks pretty straightforward!
Very patient machinist, thanks for showing us the process!
Mesmerizing.
What you do to avoid this is buy a crate engine, but it must be so much more satisfying to have had a hand in every component of the engine, fiddled with and nursed it into shape.
If only I didn't have work, family and friends to attend to, I'd be happy to spend my life constructing things with care and precision.
I've done this quite a few times. This is where the magic starts to happen. Without a balanced bottom end and the time taken to do this correctly, you can spend all the money in the world and will never get the performance you are paying for. That said, you do get what you pay for as the more expensive cranks i.e. Bryant Co. etc are spect to a much tighter tolerance then lesser expensive cranks. There are no shortcuts. You've got to take the time. A pleasant, informative video seldom seen on UA-cam. Well done guys!!
This is cool. I took and engines class 2 semesters ago at Cypress College and we built about 15 350 small block chevy engines for SEMA for the engine building competition there and this just reminds me so much of what we did. Bore out all of the cylinders, Hone the cylinders so you get a nice cross hatch finish. Do all the lifters, pistons, rings, camshaft, crankshaft, all the bearings. I learned a lot.
What a lot of people don't know or understand is, guys like this are a dying breed, For every 10 that retire maybe one comes into this business with the knowledge, skill, and the will to do this everyday all day long. Kinda like that old George jones song, who's gonna fill their shoes?
This is just great Eric! Thank you very much for sharing this with us. And also hats off for Kalvinator engines for being kind enough to show it all!
Balancing is such a fun process! I was taught from the get-go to shave the crank when possible, but it can be a lot more work, and time is money! I once managed to balance an entire rotating assembly to within 0.25 grams--the margin of error of the equipment I was using. Getting to that fine of a tolerance really has no place on a street car, but it was fun just to see if I could do it. Took me the better part of two days, though.
"Between me and the machine, I take it personally!" Love it, proper craftsman! If your gona do a job, do it properly!!
I love when you make longer videos.
Excellent eye opening video!! Fixing to have an engine balanced, my first, hope I get a guy like this to do my work!
This is so fascinating. I am late to the party here but wow, the amount of high precision that goes into my trips to the liquor store is amazing! Machinists are a valuable profession.
I plan on designing and building my own engine from scratch. I must have spent 3 hours on Google, and asking my friends dads about balancing crank shafts weeks agi. This is prolly the most amount I have learned all summer honoestly thank you.
When I had my first real race engine built for rally , I was relatively new to engine internals and there functions. But after observing some of the process and carefully attention to details , It’s precision and tolérances taken to another level .
Learned so much from the engine builder. Even what temperature the room is at can Changes tolerances , that’s something I would of never though of.
Great video and example of what is a master a work.
Man, this guy knows, ALOT. And boy are you getting on his nerves. Please stop interrupting him. Great video
Yeah, was gonna say the same thing.seens like he was starting to get bothered by answering all the questions
So awesome to see a guy with such knowledge at work!
I am 19 and starting a study to be a mechanic so, goals here :-)
these machining, precision, and calculation videos are always relaxing haha
With more steps between the drilling sizes, you can eliminate that problem with large bits. Also, bits are available with tips that match your pilot so it's perfectly aligned.
Have not seen this before! Always been curious how the machine looks like and how its done! Good one!
That was fascinating . I knew what balancing was all about . The WHY . But never seen it done before .
Kwik-way head surfacer, one of the greatest resurfacing machines out there👌🏽. Low maintenance, easy to use, and most importantly fast, fast, fast. Love the Kwik-way.
Great that the engine builder takes the weight in grams and nothing else.
This makes his work much better and more accurate
greetings from Germany
I think you have a fundamental misunderstanding of English.
A system of measurement cannot be more accurate than another.
And because of that using one or the other can't make it better or worse.
Of course, it is easier
Not because of the accuracy, which I mean in the case not.
But he does not have to convert so strongly and complicatedly between the individual units.
There remain the many pay behind the comma
And in the metric it all refers to tener that makes everything easier and faster
Sorry for my bad english, it is just not my mother tongue
greetings from Germany
You say that, but yet measurements in US are not accurate enough when u go in high science. Ask NASA... they lost a $125M Mars probe, due to use of a measurement in inches. Maybe it would have been good if it was all in inches, but there is a reason why its not used.
Wight-Density and balance is a lot harder to get correct with 1/8s 1/435th oz vs a very exact weight, onto 100s of digits if needed.
And it matters, if u need the tolerances. Lexus LFA is a good lesson on what perfect balances engine, with 0.001mm margins does. Its one of the fastest revving engine that exist, and its N/A..
For Erics case, he is gonna add "boost" to compensate for the high-rev, but i love the work he is doing to get a good balanced engine. But as u can hear in the video, they settled for 5000-6500RPM due to the hydralic-lifter and "settle" for the balance they do. Doesnt mean that a solid lifter and better balance wouldnt give more HP, but it would complicate it.
Paddan
I don't work often with weights, but every digital scale I have uses decimals not fractions.
The reason standard measurements aren't used everywhere is because of extreme globalist lobbying. One system of measurement is not more accurate than another. If I convert 1 gram to ounces, I don't get a different answer every time.
Oki... tell me then, how many inches, exactly, is a 14nm transistor? You know... in Intels Skylake CPU (a US company). Just as one example on how incredible impractical and rounded off imperial measurements get.
The most funny thing is tbh that u partially use metric, say in power, data-sorage and more. Say after me: kilowatt/Terawatt, Megabit, GigaByte. Why? If because imperial cant handle very large or very small things, and lack definitions for a lot of things
How about wire-gauge... is it 0 or 000 ?. cus its based on stupid pre-made scales that suddenly was exceed. Or how about a gallon. Is that a UK gallon or a US gallon... u cant even agree on that.
But instead of using inches, AWG, AA size, gallon i can use mm as base in all cases:
I get nm to km for inches,
I get mm^2 for AWG
I get litre that is = 1dm^3 witch can be converted to mm if u want.
So with a single "measurement" i can logically calculate between things, and instead of using a table sheet like they do in the video to "estimate" how many grams i need to drill, u can count it with a simple volume/density calculation.
Now think how this relates to the engine-block, knowing that the volume of the cylinder, the diameter of the piston and the lenth of the shaft can all be done in the same measurement base... makes for simple and damn accurate calculations, and no approximations in the middle of everything.
Witch do u think is more accurate? the sheet he used, or a proper calculation? I agree that an exact calculation between the 2 are just as accurate, but its way to complicated to do most of the time with imperial.
I say there is a reason why NASA, F1 and other critical places uses metric... cus they cant do it with a table sheet and a handgrider.
In Eric's case though.. I'm sure its more then accurate enough, but he still had to go to metric grams to save on the decimals and fractions, instead of being some fraction of 28 from the goal.
I worked at an automotive machine shop in the late 70s, it was done the same way back then. We charged $80 to $85 dollars to balance a v8 unless a lot of metal had to be added to the crank.
This guy really really knows this engine stuff...... never met a guy like him.. Eric thanks for sharing a video like this, really appreciate it....
Hey Eric just wanted to say I use sharpies to check bolt hole patterns in my milling machines just to double check my math. Been doing that over 20years now.
Takes a special type of person to build a custom motor from scratch. Respect
What a great learning experience to watch an expert do this difficult job. I wish Eric had used a drill gage to grind that big drill perfectly on center with correct angles on both cutting edges.
The old guy that taught me used a paint scale at the NAPA store. He assembled all the rods pistons rings etc and ground the skirts to match the lightest one. He was running a 283 bored to 301 and 265 heads ported to 327/375 fuel valves. Sounded like a bumble bee.
kevin is the man, his attitude to the work is what great engineering is based on, thanks for the vidja Eric.
wow so much involved in building a performance motor Watching video's like this helps me appreciate more the Great blokes that built my Motor for me
Very good video, great explanation of the process. Steel sfi bellhousing is mandatory, in the 70's a high school buddy lost part of his leg street racing when the flywheel and clutch broke and made an exit through the floor, took his calf muscle, dash and windshield with it. I've never built a car without since, he still has serious leg issues and it made a big impression on everyone watching that night.
Every day is a school day. This is so interesting and presented in a real down-to-earth way without being patronising. Excellent. And Kevin could do voiceovers for John Goodman!
29:00 - If the crankshaft is rockin' don't bother knockin'.... holy Moses.
He does very good work and I hope his honesty doesn't go unrewarded
Wow I never realized how much work goes into balancing an engine. Great job guys!
My brother had an LS6 454 balanced and blueprinted years ago. The builder told him not to be afraid of redline anymore. This builder and his brother raced top fuel years ago. They even took a race from Big Daddy in the day.
Kevin is a MASTER at his craft! I would LOVE to pick his brain just to learn a fraction of what he knows about engine design and theory.
GREAT video, Eric! :-)
Oh, and the often un-sung hero, Brian! Another great video production!
I think Kevin should start up a UA-cam channel.
I could almost open a motor machine shop with all the info this guy shares! Great video gents!
fantastic to see some one else who spent time sharpening bits . i had to way back on my appernatship is dose pay and an old school shop another rarity i could spend long hours making t a listening an learing from that dude as well as eric
At our machine shop, at any given day you could walk around and collect well over 50+ sharpie markers! Nice to see a video where the crank is balanced correctly and no cheating by just adjust the flywheel weight. ^5
I finally found a video that shows how it's done ! Finally.
Great video , thanks much.
Cool video, I am fixing to have a rotating assembly balanced and was curious. Now I at least have an idea of what is going to happen! Thanks!
I love seeing people doing what they enjoy.
Ive been in a machine shop before. But this video really put it all in to perspective. Im a math guy and love the figures and equations to get the balance and weight of material
He helped balance a set of factory race prepped trw small journal chevy rods. They were so all over the place we had to get so old school knowledge an got them with in 2 grams ...
Your sleeper is getting out of control, I LOVE IT!
I rarely sign in to comment but I found this video fascinating. Kalvin seems knowledgeable, confident and cool as a cucumber. It's a pleasure to watch him work and explain the process. Great video Eric!
I worked at a machine shop for a little while, and I found I was shocked at how often a manufacturer claimed their assemblies were balanced, but we're off by quite a few grams. Scat cranks were the biggest culprit.
I only hope fritche has groomed the next apprentice with his expertise...pass down his art...immaculate experience cannot go down the drain once he retires..like a heirloom
I used to help in a machine shop in the late 60s, balancing and blue printing engines straight off the dealership lot, mostly 396s, I found it amazing how out of balance they were , Guess they just cant spend the time to do this at the factory. The difference in the engine was amazing, but not cheap, especially if they pull the engine.
Kevin clearly knows what he's doing. Awesome video Eric!
Hahaha. I know people can complain about sponsored videos but I think it would have been kind of fun if this were sponsored by Sharpie! :P
My 427 tall block strokers (2) had to use 454 external balance flywheels (drilled in a few places). The harmonic balancers were drilled, crank, flywheel, the whole thing was a balancer's nightmare.
I used to love balancing engines fun thing to do most rotating assemblies are pretty close but it's good to balance the Pistons and rods if money is tight you can do it at yourself
Just had my entire bottom end built for my car so watching this video is really awesome to understand it more. These guys are modern day wizards imo. Just sucks most good ones take 2-5 months to get parts and get it done correctly. Usually you just get your bill and see prices of balancing and cutting and honing but this changed my entire thought process on the 4k bill i payed lol. Sucks also most of the best guys with shops with all this knowledge have noone to teach and learn 40 years of experience. If anyone needs a 2jz i highly suggest brian roche in maryland. Hes the best on the east coast for sure
It's terrifying when he starts to use the big drill bit 😨
It would have worked much smoother if Kevin had used a piloted counterbore for the holes instead of the big drill.
SFI approved flywheels are a great idea and should be run but it’s the clutch explosion that takes youre feet off. Explosion proof bellhousing is a must.
I have heard polishing the connecting rods is a means by which you can avoid the weight of the oil mentioned.
However, the splashing of the oil might not happen as predicted at the design stage.
As you have seen here, each action has a reaction.
500 rpm or 700 rpm is just fine . The force of unbalance does not change . I balance 25.000 rpm turbine rotors for marine diesel applications . A 700 Lb rotor is turned at 700 rpm , for dynamic balancing . Great vid.
Great video! Kevin is a genius in his field. Awesome to see a guy explain something so complicated into layman's terms.
I can't believe I watched this whole thing, That was really cool.
i learned so much in this video about the mechanical properties of my car, very very cool. I appreciate you both very much.
I always wanted to see how this was done. Thanks.
This is why smart phone are such a smart purchase, knowledge, knowledge, knowledge.
You know you're a "greasy fingers" sort when the sound of drilling and machining lulls you to sleep!
I do like these in location videos or "Expert" videos Eric. seeing the specialist processes helps dispel so much misinformation.
I do too. Thanks for the comment.
Wealth of knowledge. We need more guys like this.
delrin is great stuff. machining it on a lathe is a blast, because it won't break easily, yet it's still soft, so you can just go at it lol.
Yeah just hope you never have to be the one that makes it. I work with it in molten form(injection molding)every night at work. It smells horrible and pulls the oxygen out of the air and if we get it too hot it produces formaldehyde gas(which is why you NEVER want to burn or melt Delrin without breathing protection). It is a very cool material none the less, it has some very unique properties.
very informative. great job. i had an old man tell me one time to tighten the chuck at all three points and the bit won't slip as easy. i think he was right. i do it now since i wore out the jaws on his chuck. again great job and thank you for the video.
With the drilling and grinding I would be tempted to plug the oil galleries with candle wax, just break off a piece to push into each hole in the crank. Then still use a cover like a rag or plastic. once done, wash the crank, melt the wax plugs, then put it through the deep clean it would need and lastly blow the holes dry and have it ready to go. I like these videos because I have a 302W which is going to get this treatment.
Those bob weights. Is there a specific position they are in when clamped relative to each other since they don't themselves look very balanced, for example did you indicate them relevant to something to ensure they were square when at top dead center?
Experience! He makes it look so easy...
My first job was in a place like this. Making me feel all nostalgic
Very cool
Of your builder to spread his knowledge. Teach you kids to work with their hands! Honest work and a real trade!
Absolutely Fascinating, Eric! Always wondered how they balanced the bottom end of an engine. There's a LOT of stuff that goes into the process. Again, thanks to you and Brian for a look into the building of a performance engine.
Awesome video, lots of good info. Great the way the engineer considers the customers options later too. The kind of guy you want doing your machine work.
nice explanations dude...!!
not just a video of someone doing something that not everybody understand the processes
Excuse my language but this was fucking interesting
as long as youre sharpening chisel point bits a bench grinder is definitely the way to go. I watched a few videos and taught myself in an afternoon. Definitely not the hardest skill but it is a skill that takes practice.