B18C5 ~35kmiles. stock, ~9.1k redline. Honda challenge car.

Im rebuilding with pistons (stock) and bearings (Honda) only and keeping everything else [bottom end].

I can get the piston/pin/rod sets to within .5 gram by mixing and matching. Thats close enough, right?

Either way, where is the best place to remove material from the piston and rod?
I was thinking if needed just hitting the piston with an end mill on the underside of the face, and the rod along the side (concave portion) down the length and closest to the big end.

I was thinking I didn't need to do an all out full balance. The flywheel is exedy 12lb. and the crank pulley is a CTR.

 

you can grind off the rod cap, the bottom part, without comprimising the strenght of the rod, i wouldnt grind down the main portion of the rod, as that may influence the integrity....

you can grind out anything inside the piston, just be careful around the skirt and the wrist pin sections....

 

Heaven forbid, you throw a rod through your block someone will notice that it isn't balanced!

I didn't think, at that redline, that OEM bottom end would be a weak link.

Hey man, hurry up and get it together, Wai is getting lonely, and I have no prospects of going back to H2. I might even find a B20 block for the ITR to get out of H2 and into H1 cheap.