Connecting Rod Balancing

[reyftcossieR1]

İ have to make balance different size pistons.!! (1 piece) 74mm and (3 piece) 74.50 mm pistons 3 piece piston be heavier can i do together piston&conrods gram adjust? Becouse conrod hard to take off..

How negative effect different size pistons and different heavier pistons!?

U.K manchester

Thanks

[fiatnutz]

@reyftcossieR1 - Having a little trouble understanding your message, but lighten the three pistons that are 74,5 to the same weight at the 74. Ok?

[JetMech72]

How do you remove material without introducing a stress-raiser in the component?

[TheClockworksblack]

Ramil - Balancing Act (check it out)

[wackedoutdude]

Awsome vids mate. I always wondered what went into this sort of mod. Great work.

[DoriFord]

I've got a question! Is there a way to balance the rod between beams after it was lightened? Or beams balance isn't that crucial? Thanks in advance!

[AlexH33]

@DoriFord im pretty sure that is the integral part of the strength of the conrod changing that would make your piston weaker

[DoriFord]

thank you for another great video! they are very helpful!

[SRT480]

is their a noticible difference in engine response from doing this?

[ghettobraden]

how often do you use check weights on your scale, you really should use them every time you use it. Especially if other people use your scale.

[sdold]

Thanks for posting. Aren't rods shot peened to prevent fatigue failure? If so, Do you re-shot peen the areas after you remove the peening?

[fiatnutz]

@sdold - We shotpeen them after we are done with the mods.

[torchyboyz]

Dear John. Thanks for all of your vids, they are really informative. I am about to rebuild a Cummins 6bt diesel engine for a boat and want to lighten the rods. They are very rough cast and the casting flash is roughly ground off. Is there any value in grinding and sanding the rods all over to give them a smoother finish before balancing? Thanks john for your time and your expertise. Kind regards Paul (England)

[fiatnutz]

@torchyboyz - Paul, you can certainly polish the beams, but be sure to check the balance. If you had a lathe big enough, you could reduce the bottom-end weight and some at the top woth a milling machine - again - rebalance rods.

[wolftch]

Very interesting videos Sir! Good luck!

[94vettelover2]

Are titanium connecting rods avaliable for the Lt-1 engine?Are titanium connecting rods cast,forged,or can come either way?Do they make billet rods that are lighter than titanium rods?When I rebuild the Lt-1 in my vette I would like light weight engine parts.What are some good cheap rods,cranks,pistons & bearings you would recommend for the Lt-1 engine?Same question is price isn't a concern?Thanks for your time & let me know these answers when you get a chance.You obviously know alot.

[M1911A1]

Really neat. How much does this usually cost (say, for a I4).

[TeacherPHD]

Piston drag equates to a balance job also. Cylinders in most engines are not at a 90 degree angle to the crown of the piston measured at TDC. Running a Dial indicator across the top of the block with the piston at TDC will prove the point. Depth mikes also will show a improperly bored hole when measuring the crown in 4 places at TDC.

Piston drag compares to a improperly balanced engine and most certainly relates to horsepower loss and premature engine problems.

Ed.

[Vore667]

Great video, I will balance my rods myself thanks to this video.

Thank you!

[seymour86]

Awesome man! really strait forward looks like I will be doing this on my next 4AGE build thanks for the info man!

[shutuppkid]

will 1 gram really make a difference??

[Roolders]

Great job man! I'm your brazilian fan! take a look in my videos about Ford Galaxies engine maintenance at roolders channel.

tks!

[eamh2002]

You know it's hard metal if theres sparkle!

Try cutting a piston pin with a metal saw :D

[dewartt69]

@burton402 typicaly what you will hear is using a stock con rod on a stroker kit or set up. they use the stock rod and move the "con rod pin" out farther but cuting and re welding it farther out. then what will happen is you will run lower compression due to longer stroker or they add a base plate to the bottom of the cylinder if it is a streebike engine or something similar. if it is a V8 or import were that is not possible they will cut the rod and reweld it shorter. never heard of compresing

[braaup]

What is the reason to have balanced rods? To make the run run smoother? Less Shake?

[mys13isdirty]

thank you i just learned something and thats always good...

[fiatnutz]

@burton402 - I've never heard of compressing the rods in a special fixture or heating them to do so. Shorter rods are sometimg necessary to stroke and engine, but I prefer to use a small and lighter wrist pin and move it up in the piston. Does require special pistons, but if you are going to stroke and engine you will need different pistons anyway.

[tinoi30]

Is there a rod balancing fixture you prefer?

[tinoi30]

I would just like to say thank you for taking the time to make this video. This video inspired me to do my own balancing. I would feel confident to take them to you if I lived in your town, but I live in Laredo, TX. Nevertheless, I would just like to ask you one question. What affordable connecting rod balancing brand would you suggest for me to buy and from what vendor?

[fiatnutz]

@tinoi30 - No preference, just get a scale that measures to .1 gram. Take a look on ebay.

[Bri7man]

I'm about to install new bearing due to rod knock.

I was just going to have the crank examined and new bearings, any advice?

[fiatnutz]

Yeah, measure the crank pin and look for scoring. Also measure the rod housing bore to make sure that it is on-size.

[Bri7man]

Thanks! I think I'm going to take it to machine shop to clean the block and such. I go to Vellios in Manhattan Beach, do you recommend any certain place in LA? Also have you heard of the penny trick? Is it accurate?

[fiatnutz]

Have no recommendations for anyone in the LA area. Yes, the penny test is good. If you can feel any surface irregularities, the crank needs to be polished or ground.

[515042wheelsrn]

Thanks John, for taking the time to do these vids. Now, hop to it and give us more! :) Have you been on vacation or just busy?

[fiatnutz]

Been pretty busy and my video editing computer caught a nasty virus and had to be rebuilt. Plus I'm teaching 2 nights a week @ Golden West College. Have more stuff in the camera, but need my other computer to edit everything.

[piwko4]

Do you do anything to finsh of the surface where you sanded? What i mean is do you bead blast or anything to prevent cracks from forming on the surface in the sanding marks.

[DoRiFutoS]

is really nice videos. congratulation.

[jakesell]

Great Vid!! I was surprised that the rods had such a different weight for each. I would have thought Toyota would have had a closer tolerance.

[fiatnutz]

The rods were well within the 10 gram tolerance that most manufacturers use, I've seen Lamborghini rods as much as 40 grams difference in the same V-12 set.

[R5P205]

nice and simple really, thought it was harder!

thanks john.

[0671085940]

great job we all love what you do

[djhaz36]

you got the best vidz.

[etiliko81]

A question about small end weight measuring : the conrod must be parallel to the scales? How you check it?

[thanialsaad]

great video man

I always wander how to do that

[tsifreak]

Thanks John I always wanted to know how this was done!! Love your videos!

[sumjo]

great vid :)

[zapwatt]

This is so cool and if one had he proper scale setup, the guy at home could balance his rods fairly well.

[phobiablack]

yup they sell then for around a hundred bucks from some hot rod catalogs.