stock crank with scat rods

[Pirvu Eugen]

Hy! I tried to find here an answer for this....
Because the crank will be stock....and rods....scat, will affect the balancing? i should stay with oem rods. The ideea is that the oem rods have up to 7 grams diference between them. The scats are spot on.
Dont know what to do...
Thank you!
Eugen

[A80Avant]

i have used oem crank with scat rods and mahle pistons.
no problems

[Thuppu]

Known that many people have put H-beam rods without balancing the bottom end with no problems at all.

[Pirvu Eugen]

Super! Good to know.... Is pretty strange that the oem rods are sooooooo out of balance.
rod nr.1= 643,4 grams
nr.2= 646,3
nr.3= 644,1
nr.4= 642
nr.5= 640,6
Without the nuts...but with bolts.
And the Aron rods i have are all 596,8 grams.
Interesting how Audi is balancing the engines...
Thank you again for answers!
Regards!
Eugen

[JP]

VR6 OEM rods are out of balance by as much as 20gramms on the small end alone!

realistically in a perfect world you need to rebalance as the crank is balanced based on a percentage of the rod and piston assembly. However as the I5 crank is also an externally ballanced crank so long you stay within 5% of the original rod weight average it isn't the be all end all on a roadgoing car. You will do more harm by swapping the flywheel without rebalancing.

[rs200]

Super! Good to know.... Is pretty strange that the oem rods are sooooooo out of balance.
rod nr.1= 643,4 grams
nr.2= 646,3
nr.3= 644,1
nr.4= 642
nr.5= 640,6
Without the nuts...but with bolts.
And the Aron rods i have are all 596,8 grams.
Interesting how Audi is balancing the engines...
Thank you again for answers!
Regards!
Eugen

interesting , and now you give me a reason for

maybe it is because the flywheel are heavier than crank pulley , and when all parts are together , they are perfectly balanced. could that be possible?