How do WE Balance YOUR 383 Stroker?
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- Опубліковано 12 сер 2023
- Preorder "The Four Strokes" Mouse Pad/Desk Mat: epicdesk.shop/products/jamsi
Thank you to www.uempistons.com for supporting us with a set of flat top forged pistons for this build!
We're moving forward on the 383 stroker build and in this week's video we walk through the process of balancing the rotating assembly!
Our rotating assembly was NOT purchased as a pre-balanced assembly, although it is a common combination of parts when building a 383 stroker. As such, we did go through the process to balance the assembly.
Make sure you check out the entire playlist if you haven't!
• Building A 383 Stroker...
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#383stroker #automotivemachining #jimsautomotivemachineshop - Авто та транспорт
Love it, that you’re pulling back the veil and showing more in depth engine work that most people never see keep the videos coming.
That's my goal! Help our customers (and the customers of our peers) understand what really goes into quality machine work.
I used to run a gas turbine repair facility and we'd spin 2000 lb fully bladed compressor rotors in a vacuum. I saw one jump off the rollers once, blew through the roof of the chamber, crawled up the 40 foot shop wall and land about 200 feet into the parking lot. Every time a see a shaft spinning now I pucker just a little bit. Great Job guys, you do great work!
i love this channel .. if all familys had this type of relationship our planet would be so much happier
True that. My family is more like World War III...
And Marxism hates families. Transgenic risk and gender confusion reduces good family outcomes.
The world is lacking community
I have never seen this type of work done. What an amazing job. Please continue with these great videos. I sit at the computer watching in awe.
Thanks, will do!
It's good for gearheads to see the common machining processes in real time. It makes it very easy to see that your machinist didn't charge enough for the work he did. Add on tooling costs and realize the poor guy is giving his work away.
This makes me miss my dad...I'm 63 had plenty of cranks balanced but never witnessed one being done....thanks to the both of you for sharing your time & talent...ps I'm a pontiac guy (hint hint)
👍😎👌
I think you just made an internal balance recip assembly 'kit' into an externally balanced assembly. Just remove the balance pad off the flywheel and keep both ends neutral balance. (smaller drilling to get your ends to come in balance) Or am i (probably) missing something?
If they were to spin the finish balanced crank without that flywheel weight or flywheel for that matter it would be out if I remember right around 160grams, ADD weight to the counter weight.
And it will mess the front up a fair amount also. Surprisingly.
You didn't miss anything at all. Well stated.
Love this channel, you 2 are so lucky to work together like this, my father past away and I would give anything to do what you to do together, keep uploading videos, it makes my day
I knew someone who bought a salvage yard 400 SBC, but didn't want to spend the extra $25 for the flexplate. Used the old 350 plate instead. Yep shook like a paint mixer!
Lol
I knew a guy that done this as well. Put it together and drove about a mile. Broke 2 rods and spit the block up around the cam. Also one of the rods put a nice inspection hole in the side of the block.
Bought a 77 Chevy from a friend in highschool. Had a 400 small block... they said... somehow my other friend found a 400sbc before i bought the truck. Yep you guess it they swapped a 350 in place of the 400 and never said a word to me.
@@mashidaho1298did you beat the shit out of them for that? Or at least cut them off?
@disturbedrocks1996 never bought anything from them again
I was young and dumb at the time, didnt know enough to know id been dooped until i went to sell the motor as a 400 and was told otherwise by the casting number. You live and learn.
Whole new level of respect for what yall do love the channel and content 🤙
I knew that balancing was detailed and time-consuming, but I didn't realize to what extent. Thanks for the enlightenment.
I wish we could hear the ones you worked on running and purring sweet sound of a balanced engine.
Did you test the balance with the weight removed from the flywheel? Would it have been better to knock some weight off there to save drilling the crank so much? or is that a normal amount of weight to remove from a crank counterweight?
You want to do it from the crank so if in the future you have to replace the counterweighted flex plate or flywheel with a new one the assembly will remain balanced.
I've found that balancing the clutch cover is something many people overlook. I've had some as much as 20 grams out
100% agree, I usually take the pressure plate/cover as part of the rotating assembly when I have things balanced for my personal stuff or customer builds.
Nice work, fellas. Hats off to the Cleaning Guy!!!
I used to balance rotating assemblies for pumps, turbine’s etc, but not engines.
Nice to see the care and attention to detail here.
It is a great enjoyment to see fathers and son to share the same passion and the real professionalism they put into it on every level.
Then you hear them say: “the cleaning guy”, if one would just imagine that the cleaning guy is the soul and matter of the whole operation.
You guys got room for an apprentice? I’ve got a camper on my truck and I’d drive to your shop and stay in my camper just to be taught by you 2. I really love your channel. While I know how to turn wrenches and weld…. I’d really love to get on another level. The level you guys so constantly prove. You guys are real pros. Thanks for the content. I learn so much.
I'd mark the pistons and rods with letters instead of numbers for weight matching purposes just because if that writing survives and you're not the next person in it, it might be a little confusing. Then reserve the numbers for the cylinders they go in to. 😀
The markings are to serve the machine shop whilst the parts are in a pristine condition. If the engine is later disassemebled, a competant mechanic will always mark the piston-rod assemblies before they are removed from the engine - that's standard practice that all apprentices are taught.
It looks like if you just removed the counter weight bolted to the flywheel it would just cancel out the needed two big holes that you made on the right side of the crank, they seem to be both on the same axis. Very good and detailed video, I just love watching you guys, thanks and greetings from a subscriber from Qatar!
I thought the same thing. Would've took 1min to pull it off and spin it up. I've seen those cranks come in both ways. Neutral that needed counter weight and external balance that came in neutral.
That weight on the flywheel is set out quite a distance from the crank center line. The weight calculated is based on the diameter of the crank balancer diameter... in other words, it wouldnt work to remove that weight. It would make a bunch more problems.
I WOULD LOVE TO GET TO USE THOSE TOOLS EVERY DAY, INCLUDING ALL YOUR DAD'S HEAD GUIDANCE HE GIVES YOU .
DADDY CLEANING GUY
You calling him a tool? 😂 Just kidding
Why are you yelling???
SPEEK UP LIBRUL
love me @@arichy4201
Your attention to detail will show up in the way this motor runs. Excellent work!
Nice balance job. My best balance was .02 and .03, on a early 350.
I admire all the extra effort you guys put into your work shows you are a great machine shop
Did anyone else see the front of the crank where the harmonic balancer goes wobbling? I would say that has a whole lot to do with the Burlenson of it. It would be just like a bent rim.
I work in an engine machine shop for six years actually a little over five years and I loved that type of work. But life happens and I got old. I wish I had stuck with it. I was about 25 years old when I started and worked till I was a little over 30 at the machine shop. I loved boring and sleeving blocks reconditioning rods, and balancing them.
Had experience carrying cranks from the old Stewart Warner strobing balancer to drill holes .Then the boss got what you have with the integral drill .Big game changer ,get one when you can .Enjoy your videos.
I learned how to balance on one of those SW machines. This new stuff is much easier to get job done quicker.
Love that you all share these in depth detailed videos!
New Motto .... It's Not just an engine, it's an adventure
I sure miss doing that stuff! From what I remember it was pretty typical on the one piece seal 3.750 cranks to have to drill quite a bit in the exact same spot, if memory serves! Great job love the videos
Working at a small shop in Florida and we just got our first balancer as well. Glad to have some great content like this to compare ourselves to. Love your stuff
Great job guys. Great video. Congrats on your results.
Fantastic work yet again. This is what it’s all about. Love it. 🙂
I am 63, i have always wanted to buy a 1970 302 convertible mustang like i had in high school, and make horse power. Not any more and man am i glad i didn't "try this at home"! I had NO IDEA all that is involved. And no wonder this cost what it does. I will now be satisfied vicariously watching "real pros". Thanks men, enjoy these videos.
That's a cool process and very educational!
Good job! I have sent many a crank to be balanced and always wondered how it was done. Thank You!
Thank you for your open honest presentation have a great day gentlemen.
I love your atention to detail and how chill and humble you are. many gauys will say theyre the best and everyone else is trash but you are a breath of fresh air
I learn so much from these videos thank you
Enjoyed watching the process
Loving the build guys 👌🏻🇬🇧
Very Informative Video!!! Great work! 😉👍🏽
This was a great video,I learned so much thank you.
Awesome video! Learn something new each time I watch you guys work. Watching the metal removal and thought I'd suggest an inexpensive shop vac be used to pull those chips away and maybe reduce cleanup time and help keep the area chip free.
Awesome video. Love the content. Just subbed 🤙🏼
I love the honesty... great business model
Thanks for your time guys! Way to sneak up near zero; I hope your balancer doesn't upset the apple cart. Looking forward to the assembly!
Very interesting process . Thanks for sharing .
Wonderful content,thank you for sharing and keep it coming guys,
Great job, guys!
“Knife-edge” that counterweight. We used this technique in our engines along with a “crank scraper” metal strip that kept more oil in the bottom AND slightly lessened parasitic power loss. We also used “Mallory metal” which is much heavier than the crank material. Holes would be drilled into the counterweight parallel to the crank and mallory metal would be pressed in and tacked.
So much handwork done. Nice tools and computer.
Great video and really interesting to see things that an every day shade tree doesn’t get to experience. Thank you !
Very interesting! Thanks fur the explanation.
Awesome video! I love your dad’s comments “ I took a nap and then let’s go super don’t make the cook mad”. 👍
Thank you Fellas & Mom ! - Explains why the machine bill is what it is !! Great work & THANX
Love these videos. Learning a lot. Wish you were closer to where I live.
Good job! I just built 2 383 ,one with a scat crank other with eagle crank .both was drilled just like you done,the scat had 4 drilled holes,eagle had 3 holes.
Very impressive, nice work
Why can’t you just go ahead and make that 383 completely internally balanced complete with an internally balance man trans flywheel like a 350 instead of the much more difficult to acquire 400 flywheel?
It’s an honest question that I’ve often thought about and I’d really like someone to educate me.
So interesting
Thank you for the class
1958 best year ever Happy Birthday ,
My father was born in that year also
on a production engine rebuilt with production parts, just equalizing the weight of the pistons and of the connecting rods usually makes a very perceptible differenge .
I always equalize the weight of the piston /pin / conrod assemblies within 1 gram when I rebuild a marine engine, it makes a very perceptible difference.
Nice explanation. Remember having a crank for a blown alcohol engine balanced which they used Mallory plugs for balance
Great Work!
Outstanding channel, thank you.
I enjoy watching your videos and hope one day I can send you a motor. I would like to learn and watch it be done!
Don’t forget to check all rods for twist and bend and to re torque the bolts with arp luge and check big end sizes and most importantly wrist pin clearance
I am enjoying this engine build.
Boy I sure enjoyed this one! I’ve been building performance engines for over 50 years and I always farm out the machine work (obviously) and this was the first time I saw how it was actually done. What a great learning video. Kudos
Why ‘obviously’? I also build performance engines for myself but can do everything except grind cranks in house including all machine work, head work, flowing, dynoing…. With time and care I can do a much more precise job than you could pay most people to do.
@@odl21 there is so much information on the internet these days on how to build things, that you no longer have to rely on a performance shop for some of these tasks you did when I was a young fella. But I don't think I ever put an engine together where I didn't at least do a Clayton's balance on it (heaviest piston to the lightest rod etc). Same with matching rings to bores. Sometimes you don't need fancy tools, you just need to think and have patience to do things right.
@@odl21 Well that’s just dandy for you!
Good Job !
Good on ya boys!
Very cool process
To those who don't know, a gram is equivalent in weight to a dollar bill or a paper clip.
Near as damn it 40 thou.
Tell me you're American with out telling me.
"I do cars" just tore apart a 6.0L powerstroke. Kinna funny when he pulls the drain plug to see what comes out. Four valves stuck open.
Awesome as usual guys
One Q?, what would happen if you removed that counter weight from the flywheel befor drilling. It sems to line up with the big hole you had to drill
Love your work👍🏻👍🏻👍🏻
If you remove the flywheel it may improve the situation - not sure. However you then have to balance the flywheel as a 'stand-alone' item which adds cost. My preference would be to balance crank, flywheel, harmonic balancer and clutch pressure plate as seperate items so the latter three can be balanced seperately if they need to be replaced during the life of the engine.
I enjoyed what I cought was the last half or so but as long as I'm learning I'm in good video I think I'll stick around 👍
Half my working life “on the tools” vs half in an office and I finished up with 18 months making carbon fibre parts for McLarens / Aston Martins. If I could start again, butchers and machine shop (assuming I had the talent) would be my choice. The happiest I’ve been at work was always where there was something to physically show for it at the end of the day.
Fantastic video guys.
That 383 is going to purr. 👍
When I leave the bonds of this earth and ride off to my own personal Valhalla, I am going to have my own machine shop like these guys and build lots and lots of cool stuff. With a harem of never complain cooks as well. 😅😂👍
I love the balancing. I’ve seen some high dollar cranks that were pretty Swiss cheesed.
I have the same passion for balance. But, back in my crankshaft grinding days, I noticed that quite often the crank pins were not exactly on the degrees that they were supposed to be. Essentially I'd treat each pin(journal) as it's own sphere....it may have been off by 3 degrees maybe. But, no way can grinding make up for that. Twist over time? Bad OEM machining? Beats me. But, after seeing that with crankshaft angles, it made me regard balancing parts as not being all that important. There is far more to balancing than just weight of pieces. I was weighting rings when the journals were so far off seemed sorta silly.
Absolutely correct, I never see this brought up before, especially on small block chevys.
Nice work gentleman, and happy birthday young man. I can say that because I am 12 years your senior. Keep on smiling.
Definitely much easier with a drill over the balancer. I use a turner brothers setup mounting onto Bridgeport
That counterweight on the flywheel could have come off since you're balancing it internally
I thought that too. I'm sure it's there for a reason or they would have removed it.
I have complete confidence that they know what they're doing.
I just had my scat crank balanced and the mCcloud flywheel came with 2 different counterweights and they put the smaller of the 2 on my flywheel, i wondered the same thing
probably already done.🔧
The cleaning guy is watching you real close. Be careful, he’ll have your job soon😊
Between y’all and Gerald at Brand racing engines I’m learning a lot about what goes into machining engines.
Thank you for your knowledge and video's USA 🇺🇸
0:31 Nap time! 14:42 Great work! Cleaning guy gets another raise and maybe a new broom!
Bravo. Graci.
Do you number them before you balance them? And then re number them again to the corresponding cylinder? Just trying to understand the best way to keep a track of the weights of each component. Thanks
More great work guys, everyday is a school day
I put off watching this vid thinking it would be boring. I could not have been more wrong, 17 minutes flew by and I'm honestly looking forward to seeing what happens when the balancer/timing gear gets installed.
Keep up the great work fellas 😎🤙🇺🇲
How do you account for the friction, of the pistons as they move through the cylinders?
Wow.. so much time and labor to balance a rotating assembly. And folks wonder why it's not cheap to balance their engines.
Nice job!
Great video
A superb video, thanks Chaps, very interesting. Do you have a reliable source of info for the balance factor to different engine configurations?
How does the machine detect imbalance? Is there some kind of strain gauge?
Like a rizzla paper ! Awesome guys
Do you guys ever knife edge the weights to help with drag/windage issues? I had an autoshop teacher who swore by it. Our schools 71 Demon ran 12's with full exhaust.
Great Textbook balance Job guys,....Even almost running out of Counterweight, Youmade Perfection seem easy !! ..... Show us the Job one when the Hole needs to be in the Middle of Empty space & you have to really Work for your Money !!
Or just off the edge of the CW. Can't remove weight switch to add and no place to add weight. Tweener my ex boss and I called them! Lol
Those SUCK!
Fortunately the crank manufacturers have improved that..... mostly.