To Balance or not to balance

OhioRiverCigarett · 11-11-2009, 06:26 PM

I scrambled one of my engines and I am going to have to install new pistons and rods. I am going to install new speedpro pistons and manley billet rods.

I know this set up should be balanced, but budget is getting tight and I am planning on 572 in the next couple of years.

Is it stupid to concerned put this engine back together with out balancing the rotating assembly?

Thanks

SkiDoc · 11-12-2009, 07:00 AM

I believe that if you don't do it right, it will cost you down the road.

ezstriper · 11-12-2009, 08:44 AM

don't think it would be a good idea, maybe be able to just match the old rods/pistons weights...Rob

1BIGJIM · 11-12-2009, 04:07 PM

I pay only a couple hundred $$$ to get the complete assembly balanced, cheap insurance I think.

BillK · 11-12-2009, 08:15 PM

Cig,
Have your machine shop weigh the old parts and the new ones. If by some miracle both ends of the rods and the piston and pin weigh within a few grams of your old parts, you should be ok. Otherwise you need to rebalance the crankshaft to match the weights of the new parts.

Bill Koustenis
Advanced Automotive Machine
Waldorf Md