Mikuni 042 jet number vs diameter

[Ollies930]

Does anybody have a conversion chart for the Mikuni 042 hex jets, comparing jet number with inside diameter? From what I understand, these jets are not numbered according to inside diameter, but flow rate instead. My jets currently are drilled to .067" ID, would love to know what the corresponding jet number would be.

[Bennett131]

I asked a similar question before and would also like to know...that being said I did use pin gages to see the difference between jets. Ever size up you went, the hole got .001 bigger if I recall... (that was main jets)

[ETR174]

Here ya go, .067" converts to a 390

[Ollies930]

Awesome, thank you!

[Larry's Shee]

Here ya go, .067" converts to a 390

where the fuck you find that?

[ETR174]

Internet

[trickedcarbine]

Here ya go, .067" converts to a 390

Finally posted some gold! The drag guys who are drilling mains for alky may appreciate this as well

[Bennett131]

Well, dip me in dog shit....I was right for once. lol

[sheerider1026]

Dog shit stinks

[Bennett131]

Could be worse.

[ETR174]

Well Bennett they have them going up by 5's, Banshee mains go by 10's so in perspective of Banshee mains they go up .002" each size.

[trickedcarbine]

.

Edited September 26, 2014 by trickedcarbine

[Bennett131]

Not entirely true...The chart goes up by fives at first, and then by 10s. That being said I measured 320 330 and 340 mains, and regardless of what the chart says, they were .001 in size difference. I know for a fact you don't have precision pin gages laying around to check for yourself.

[Bennett131]

And they were actually mikuni jets too...God knows where you found your "chart"...I will disregard your comment.

[ETR174]

I'm just going by the chart...