Rod balancing jig.

[mickrick]

Any recommendations for a quality jig and scales?
I see Acrolite pistons, and Arrow rods are balanced to 1 gram. Am I wrong in thinking this is a lot? I would have thought to 0.1 gram would be more like it.

[mickrick]

Boosted LS1 said:

Scales won't be accurate at less then a gram and besides it's not needed. A spot of oil weighs more then that.

Scientific scales measure to 0.1, but as you say are they accurate at that? So, if you say a gram is close enough, I would still want to weigh them, and match the pistons pins and rods.
Another question regarding crank flywheel clutch, and front pulley, is it worth having these dynamically balanced together after buying the individual components brand new? Pistons rods rings, clips and pins would need weighing to do this no?

Edited by mickrick on Saturday 17th August 17:22

[mickrick]

Partyvan said:

You could match the lightest piston to the heaviest rod (and vice versa - heaviest piston to lightest rod)

Yes of course I would do that, also with gudgion pins and pistons.;)

[mickrick]

Thank you for the replies Gentlemen. I almost certainly will get the whole lot professionally done, but I like to have a play myself just out of curiosity. I have a lot of patience, and I don't like to rush anything.
I suppose I could get a jig made locally, as I don't have a lathe and a mill in my shed, yet. They are on the wish list
Neither have I bought any engine parts yet, I've been looking around, and I most certainly will go for Arrow crank and rods.
I was surprised to see they only worked to a gram though. Accralite do say on their website that they match sets to within a gram.
Of course if everything is out by a gram either way, that can add up to being quite a bit out at each end of the scale, so getting it all professionally done.makes sense.

Thanks again for the comments.

[mickrick]

I think I'll be paying Andrews Precision a visit.
I had a bit of a browse of the website. They say they can match weigh pistons and rods to within 0.1 of a gram.