JE's rings are narrow with low tension to reduce friction. The top compression ring is chrome plated for long wear while the second compression ring is ductile iron with a scraping Napier profile. Napier rings are good for reducing oil consumption and rapidly breaking in to give a good seal. The oil ring is narrow with low tension for friction reduction and has two scrapers with a separator rail.
Brian Crower or BC makes the FA20 rod in both H beam and I beam configuration. Both styles have identical power handling capabilities and weights so we choose the I-beam parts just because we usually run BC's H-beams! We opted for the standard rod instead of the extra heavy duty Extreme rod. Not to worry though, the standard rods are rated for 200 hp per cylinder which is more than enough for our application!
BC standard rods use high-quality ARP 2000 bolts which have a yield strength of 220,000 psi. This is plenty for what we want to do. BC's Extreme rod have ARP 625+ custom age steel bolts which are even stronger at 285,000 psi! We figured that this was overkill for our application.
The small end of the rod has an aluminum-silicon-bronze bushing with an oil retention groove in the middle. The bushings are machined from one piece bronze billets and are available separately as a service part.
We reused the stock crank, we just balanced it, checked it for straightness and polished the journals.
The stock crank has extensive chamfering at the oil holes which is a nice touch. Normally, we have to do this ourselves. The stock crank is plenty strong, machined from a forging, having decent journal overlap and rolled fillets. It can hold the power we want to make and more.