How to balance connecting rods and assembly

[@matthewlee2686]

Watching this while taking a dump. I must say this video was very helpful. Thanks

[@CarsBikesandCoffee]

matthew lee when I started the channel my goal was solely to help people out through the restoration process and any possible hang ups. You have raised the bar for me, for that, I say you’re welcome and thank you. 😂💩

[@deankay4434]

@matthew lee > I am glad everything came OUT all right for you. Try other videos or add fiber to your diet. ASE Master Tech-Retired

[@denvereldridge1708]

Interesting what you can learn. All my life I have heard of blue printing and balancing and never bothered looking into it because it seemed complicated and expensive. Your video made me realize I could have done this myself to engines I have rebuilt and now puts me in mind of doing it to a 383 I'm building. It isn't rocket science.

[@CarsBikesandCoffee]

Do it! It’s fun, just takes some patience. Let me know how it goes. Thanks for watching!

[@milkmanpeter]

Or necessary

[@DrummerBrandonLaliberte]

Nice attention to detail,thanks for tips!

[@68pishta68]

nice work at 15:50! I hate doing that (setting pistons) as you got about a second to get it centered before it locks up on you. Mopar rods are tight even when heated so you usually have to freeze the pins too. I took out all my weight from under the pin where the 2 factory holes are and in a pinch I took it out of the pin itself inside the very ends with a bit just oversized from the ID of the pin. The pin material is much heavier than the AL piston and when you got no piston material left, you have to find places to trim. I didnt want to regrind the little ends as they were already a matched set.

[@CarsBikesandCoffee]

Thanks! Yeah I’ll be honest I break a nervous sweat when I do that every time 😂

[@jjmccloud]

There is no 15:50 lol

[@CarsBikesandCoffee]

Yeah 12:00 is the new 15:50 lol (had to make an edit since)

[@Rekinortiher]

Thanks for the great videos! They will help me out a lot when I start building my engine.

[@CarsBikesandCoffee]

Right on! Always like to hear that! What are you building? Thanks for watching!

[@Rekinortiher]

I’ve got a 77 280Z. Did some rust repair and gave the engine a big service. Right now rebuilding the suspension with pu bushings and welding is bc racing coilovers. After that it’s time for some bodywork and paint. And then I might look into building an engine :)

[@CarsBikesandCoffee]

Reinier Korth sounds awesome!!

[@MrStreet69]

To have to balance the pistons rods if I remove them from the block ?

[@CarsBikesandCoffee]

Are you asking do you have to balance the rods if you remove them? If so, not at all.

[@freezerfreezer9097]

You know where this video lost me? Heating up the small end with a MAP torch. This can change the molecular structure of a rod. Especially chrome moly. Essentially annealing it while taking the brass in the bearing and making it brittle. Because the brass does the opposite quenched that steel does. The Wristband does not have to be totally inside and the rod can be pinched with foam material. Just weigh the foam and add it to the calculations.

[@MrFredsAdventures]

Was wondering about heating up the end like that.

[@CarsBikesandCoffee]

Mark White you can, the key is not letting it go beyond the blue tint as mentioned. The idea is to expand the hole to allow the pin to go through otherwise it won’t for these Datsun rods. Other engine builders do the same thing. Appreciate you watching!

[@MrFredsAdventures]

@@CarsBikesandCoffee Thanks for the reply.

[@RobertEHunt-dv9sq]

Great video. Very informative. But the music is extremely annoying.

[@CarsBikesandCoffee]

Thanks! Yeah I have since worked on background music. Thanks for hanging through it🤘🏻

[@ess2586]

This is so helpful! Any advice on how to set up the rod balancing stand (big end vs small end) would be fantastic.

[@CarsBikesandCoffee]

I’m glad it’s helpful! Did you happen to watch my video on making the stand? kzbin.info/www/bejne/pXuZl2d6bqx4n6M Let me know if you have more questions.

[@mikewilliams9861]

I just did this..... worked great although I had to take out a fair amount of material to get the weight down. Mine are all balanced now but I have no compression in 3 of my 8 cylinders ?????

[@CarsBikesandCoffee]

+Mike Williams lack of compression would relate to your piston rings

[@ImpalaLfx]

Yeah I was about to say that and it’s cause u rearrange the sizes or volume of what sits in engine cylinders I recommend new rings and cut or refuse to size and weight or as close as u can

[@jayponce3571]

Great video keep up the good work

[@CarsBikesandCoffee]

Jay Ponce thank you!

[@liveTwoFish]

Thanks for the videos! Do you think this process would be required if your re-using the stock pistons and rods?

[@CarsBikesandCoffee]

+liveTwoFish I would say if you were re-using the parts, I would skip. Thanks for watching!

[@williamhall2386]

Is there any concern to the map gas tempering the rod end when heating? Does that make it more brittle ?

[@CarsBikesandCoffee]

That’s why stopping at the color change to blue is key. Any further and you will compromise the metal’s shape.

[@williamhall2386]

Great videos btw! Thanks for taking the time!

[@CarsBikesandCoffee]

William Hall thanks! I appreciate it and thanks for watching!

[@vintage76vipergreenBeetle]

👍

[@totalcookiee]

Question. Since there is no balancing pad on those rods and the finish is shot peened, wouldnt grinding affect the rod/ pin housings?

[@CarsBikesandCoffee]

To my knowledge the stock Datsun rods aren’t shot peened. Are you asking if the housing is weakened by the grinding?

[@totalcookiee]

@@CarsBikesandCoffee Ah, I see. I thought they were, was told connecting rods that are peened would distort if they are ground. 👍

[@CarsBikesandCoffee]

I believe you are spot on, and with that they would balance prior to shot peening, I’ll have to check.

[@imnotahealthandsafetyperso4889]

Hold on fella you swapped to arp then balanced I never see the re size after fitting the arp bolts or did you not re size after fitting the bolts not being a smart arse just asking if it really needs doing as my rods measure spot on even after bolts are tight

[@CarsBikesandCoffee]

Always best to switch bolts and then resize to be absolutely perfect. In this case it was just timing. The differences as well are minute.

[@amberrivers81]

grate video

[@スベすべ]

コンロッドを圧入式からフルフロ加工してみては如何でしょうか・・・

[@andersonperazzoli4208]

Might be a newb question. Is heating always needed to insert the pin into the rod? Also, was the pin bearing already inserted, i couldn't see it clearly? Tks

[@CarsBikesandCoffee]

Great question! Some need the heat and some the pin easily inserts and then has a retaining clip. There really isn’t a bearing other than the oil being injected into the surfaces.

[@GlennnD]

@@CarsBikesandCoffee What about putting the pin in a freezer?

[@CarsBikesandCoffee]

+GlennnD great to do both! Not sure if I mentioned in video but I did freeze these pins overnight as well.

[@griffon3275]

Watched video to simply see how you set up to weigh small and big end of rods as I have done this many times in the past at home and always open for better ways. I prefer to shot peen the rods after grinding if for no other reason to make them more visually even and appealing as it only takes minutes to do. As for you method of piston installation ? you should have made an installation jig so you push the pin in and it is 100% correct every time .. you installed the pin and used your hand to center the pin while the rod was cooling .. your margin of error here is very slim and the need to press the pin out and reinstall multiple times in case of error is not something I would feel comfortable doing with new pistons .. make a jig its not very time consuming and if you do this often make the jig adaptable for other piston designs

[@CarsBikesandCoffee]

Right on, I appreciate your feedback. That is a really good idea. Maybe have an adjustable piece so I could dial in the pin depth. Honestly I was sweating bullets putting that pin in. Thankfully in my case installation went without any issues. Thanks for watching too!

[@rememberussliberty1822]

Why didnt you wiegh the small end of the rods? This has the most effect since it is farther away from the crank

[@CarsBikesandCoffee]

Small ends (piston side) were weighed and balanced to match. Then the entire rod is weighed. The delta of the weight from the heaviest is then removed from the crank end of the rod to balance the remaining rods.

[@rememberussliberty1822]

@@CarsBikesandCoffee yea i know i didnt see you do that part..in all fairness i meght have missed it cause my son started crying for his bottle. Great Video BTW!

[@rememberussliberty1822]

@@CarsBikesandCoffee dude lol my baby dances in his seat when your cha cha cha music plays

[@CarsBikesandCoffee]

No worries, I had to watch it to remind me lol 😂

[@CarsBikesandCoffee]

Ha, that’s awesome!

[@douglasknutsen]

Enjoyed the video ----HATED YOUR MUSIC CHOICE !

[@CarsBikesandCoffee]

Douglas Knutsen I appreciate the feedback. Song isn’t used anymore fwiw. Thanks for putting up with it an watching though!

[@tonyd7342]

Ok, you replaced the rod bolts. Why didn't you resize the rods? They will all be distorted now. The correct method is to mill the inner face of the caps flush, where the bolt, do the same to the rods inner face to true it, then resize it. now install the bolts. Btw, the rod machines do two rods at a time do 2. You can get away with vising them in with 2 blocks of rod and doing one bolt at. A time, but it's not recommended for a novice

I have that same shirt! :D

[@CarsBikesandCoffee]

+Porsche Duésnburg ha! Great taste!

[@billyb7561]

Awesome video. Except your audio editing was horrific.... I turn up my volume to hear you talk and then Bam!! My surround sound is going crazy loud with trash time lapse music..... Stop blowing my ear drums out with shit music while your mic volume is half the volume. Other than that, Great content bro!

[@CarsBikesandCoffee]

+billy b I appreciate your feedback and thanks for putting up with it. The good news is my more recent videos are better. Let me know what you think! Thanks for watching.

[@foxfinder4863]

wtf is up with the music? would have been a lot better without the music.

[@CarsBikesandCoffee]

Yeah, I agree, I’ve been working on that. Also the volume. Check my recent videos. Appreciate you watching and putting up with it.

[@foxfinder4863]

like the video good ideas, practice makes perfect!

[@CarsBikesandCoffee]

Exactly! Thanks for the feedback

[@johngouker4757]

Informative but Borrrrring 😉 ! All or most parts are CNC’d . The wrist pin included , weigh them separetly ! The rings too , Really ? All that needs balancing is the piston & connecting rods ! Nice home made balance stand ! 😋😋😋

[@CarsBikesandCoffee]

+John Gouker thanks for your honest feedback! I’ve been trying to improve my videos so any suggestions would be appreciated. In regards to the parts, all were weighed separately maybe I got to low in the weeds for the rings, all interesting to me how different they were and it all adds up I suppose. Appreciate you watching! 🤘🏻

[@johngouker4757]

Can we get the measurements on the stand please ? $250 + on EBay 😳???? GAG !

[@CarsBikesandCoffee]

+John Gouker even better, I made a video on it kzbin.info/www/bejne/pXuZl2d6bqx4n6M crazy how much they are, also why I made one.

[@lama8755]

That annoying loud music made me just delete this!

[@CarsBikesandCoffee]

Yeah, I’ve been working on improving the levels since. Always try to improve. Thanks for putting up with it.