Ok, im getting ready to balance my bottom end.. and only have one hold up... i was going to get the scale, and they have many different ones that weigh up to certaint #s of grams... does anyone know about how much one of my rods would weigh? and one of the pistons? its from a 2.0 turbo, stock pistons, stock bore, stock rods, thanks in advance for help

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Anyone??!!!

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You need to get the exact weight of your parts instead of taking someone elses readings. Each rod and piston combination will be different in weight to some degree. Exact figures for your parts are needed to do what you are talking about or it won't be balanced properly.

it doesn't cost much to bring it in and have the crankshaft balanced... might as well get it done right.


HP Tuners | Garrett T3/T04B | 2.5" Charge Pipes | 2.5" Downpipe | 650 Injectors | HO Manifold | Addco front/rear | Motor Mounts | HKS SSQV | Spec stage 3 | AEM UEGO Wideband | Team Green LSD | FMIC | 2.3 cams | 2.3 oil pump swap | 280WHP | Now ECOTECED

Well, the crank im going to buy comes pre-balanced.. and i didnt want to have to spend the money to get the rods and pistons balanced.. so i was going to balance those myself... im just not sure what sclae to get like... theres some that weight 100 grams.. and some that go all to way to 600 grams that iv seen... so i was just wondering which one would be enough for it...

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fair enough, pistons would be much more than 100... maybe around the 600 range, but that is a guess.


HP Tuners | Garrett T3/T04B | 2.5" Charge Pipes | 2.5" Downpipe | 650 Injectors | HO Manifold | Addco front/rear | Motor Mounts | HKS SSQV | Spec stage 3 | AEM UEGO Wideband | Team Green LSD | FMIC | 2.3 cams | 2.3 oil pump swap | 280WHP | Now ECOTECED

hmmm... so basically i need something that at least goes up to like 1200 grams to be able to do rods and pistons?

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You do rods and pistons separately, and you only do one end of the rod at a time. No idea which scale though, sorry.



fortune cookie say:
better a delay than a disaster.

Why not bring your piston and rod to the place you buy the scale so you can establish which scale you need.

You need a scale with half gram accuracy, to do it correctly (digital scales are best here). You would also need a rod balancing fixture, to get the rod leveled on the scale. Purchasing these items for one motor is going to cost as much or more than having a shop do it for you. If your doing multiple engines then it might be worthwhile.

At least with a 4 cylinder motor the crank can be balanced independent of the rotating and reciprocating assemblies. In-other-words, you are weight matching the rods and pistons, not balancing the whole motor. As OHV Notec stated, you need to balance (weight match) the big ends of all the rods to the same weight (+/-0.5 gram), the small ends of the rods(+/-0.5 gram) and the pistons (+/-0.5 gram). The total deviation of the small end of the rods and the pistons combined must be with-in 0.5 gram of each set.

Nevermind... F*** doin this myslef lol... i think im just gonna have a machine shop do it... prolyl cheaper as u said since its only my motor im doin.... plus, i wanna make sure i get it right too... it just more worth it to have a machine shop do it.. i found one that will for $150... but thanks to everyone.. its been a big help

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