coming from https://honda-tech.com/zerothread?id=300901

"...(t)o remedy the problem, a team of Honda metallurgists/engineers created a highly seizure-resistant overlayon the bearing's sliding surface using a unique electrodepositing of tetra-methyl lead, Pb (h00). The highly oriented Pb surface has a composition of myriad minuscule pyramids, which possesses outstanding "wettability" or lubricant-retaining properties. Honda claims is has given a 30% or higher increase in the anti-seizure parameter, PV, than a surface with conventional deposits."

The problem was that the max sustainable rpm that the b18c1 could hold was 7500rpm while in development. These new bearings, along with improvements in con rod material technology, allowed a max sustainable rpm of 8100.

Tom


[Modified by Tomakit, 8:38 PM 10/8/2002]

 

Ok.

 

If gsr's and itr's use the same bearings then that article would need updating