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What I'm looking at doesn't look ideal for high power at all compared to the EJ20 crank which is very good.
As noted the newer material with nitride coating has proven inferior regardless of what the keyboard experts say. Is it a deal breaker? No.
The narrow bearing journals could be a deal breaker for really high power. In general the rod bearings on the EJ20x and EJ25x need very high and consistent oil pressure to survive because the narrower the bearing surface the greater the psi. Lets face it the FA20 is about efficiency, not handling high power. You can forget about that 0w-20 oil with high power since these bearings will be even smaller.
Now much of the engines geometry is better and should put less stress on the bearings but still I'm going to be monitoring oil pressure very closely as we build up this engine's power.
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