Thread: 1N5 and 8H6 oiling tubes

Hey,

I made a comparison between this 2 head's oiling tubes and found a very small difference between them. Newer tubes' holes are smaller than older tubes. In this thread there's a comparison between DE tubes and the opposite happens (newer are larger).
Considering VEs. Is this on purpose? 20V revs higher from the factory, smaller holes mean less flow but higher speed of the oil jet? Or should I use the older one with bigger holes? Which one would you use? I'm reving it to 9k...

TIA
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1n5 & 8h6 both have the identical cam oilers, exactly the same part numbers too


intake 151081N501
exhaust 151081N511

Unsure why yours seem bigger, maybe been drilled out?

Regardless, Both engines have been proven to take 9k RPM so as long as they are not blocked ether spray bars will be fine.

Thanks, didn't know had same part#s. None of them were drilled out as far as I know. The difference is small, but there is a difference. Anybody else?. Which one should I use? Bigger or smaller holes?