Homemade internal balancing
 

I remember seeing a thread a while back about balancing your rods/pistons at home but can't find it through search. Does anybody have any tips or have a link to the thread?

Re: Homemade internal balancing
 

I would be interested in this thred too.

Re: Homemade internal balancing
 

go and buy a nice scale that has grams on it put each piston and rod on it and weigh each 1 at a time and shave material off till the all way the same..

good read
http://www.circletrack.com/techartic...h_terminology/

Re: Homemade internal balancing
 

Is this the one
https://www.homemadeturbo.com/forum/...?topic=83176.0

Re: Homemade internal balancing
 

Nope.

Thanks for that link. I'm mainly concerned where the best place to remove material from is.

Re: Homemade internal balancing
 

the best place on the rods would be from the sides and the pistons builders usually remove material from the underside of the piston by either sanding or drilling small holes

Re: Homemade internal balancing
 

http://www.proformparts.com/mistore/.../th9966844.jpg

http://www.proformparts.com/mistore/...0719/67596.jpg
I was just thumbing through Summit and was looking at the tools that are used, I wouldnt even know how to use it.
LOL :S

Re: Homemade internal balancing
 

so if i got what that article said, you balance rotating after you get the pistons to within like, 5 grams of each other, same with rods, then balance the crank, in that sort of order, because the journal end of the rod rotates, the pistons reciprocates, and if you balance the reciprocating end, it makes weird vibrations.

Re: Homemade internal balancing
 

I'm probably just going to say ---- it and not balance ----, but it's nice to know.

Re: Homemade internal balancing
 

yes you would want to have your components within a couple grams of each other then assemble the bottom end with eveything attached including flywheel and balance the whole assembly.

Re: Homemade internal balancing
 

from what my machinist told me when doing my z6 vitara build, since we have "flat" cranks there is no need to balance the crank, just match the weight of each rod/piston/pin/clip/ring combo with each other and you're golden. My 13 psi 8,000rpm panty rippers dont seem to mind it so its all good with me.

Re: Homemade internal balancing
 

Thanks for the input ;)

This is ultra low budget actually, I don't plan on replacing much of anything at all other than rods, pistons, bearings, HG, and some seals.

Re: Homemade internal balancing
 

I asked the machine shop this q and he told me that simply the big end of the rods must all weigh the same, and the small end of the rods must all weigh the same.
Additionally, all rods must all have the same weight
I figured this can be achieved by holding the opposite end with a pencil and laying the other end onto a small scale. (But thats just my idea, this may not work)

Re: Homemade internal balancing
 

theroetically it could work but is is just easier to weigh the whole rod itself and go from there.

Re: Homemade internal balancing
 

i just took my ---- to the machine shop. i got pistons and rods balanced to .5 grams of each other and crank balanced to 14k

it was pretty cheap

Re: Homemade internal balancing
 

full rotating assembly balance is 65 bucks which is cheap considering if you ---- it up your out a g or so depending on what your building

Re: Homemade internal balancing
 

i would be more interested in diy balancing. the machine shops around here charge out the butt for it.