3 Cylinder OMC Questions

[johnml390]

The first question I have is... With OMC Jets, what is the difference between the "C" Jets and the "D" Jets?

Where can we find/buy full butterflies for the 3 Cylinder OMC carburetors?

Thank you for any responses.

[johnml390]

Bump Bump

[Fast Freddie]

I believe the letter designated which way the fuel flowed through the jet. Don't ask me to remember it all or which is which!!!

[johnml390]

I believe the letter designated which way the fuel flowed through the jet. Don't ask me to remember it all or which is which!!!

No worries, man. Thank you kindly for the response.

[John Schubert]

I believe the letter designated which way the fuel flowed through the jet. Don't ask me to remember it all or which is which!!!

Fred,

My memory isn't good either but the "D" jets were definitely fuel jets, but weren't the "C" air metering jets for the intermediate circuit?

[johnml390]

Thank you for the responses. Much appreciated. Hoping to have some more folks chime in also.

[1100-one]

Will contact you a bit later here or on FB

[johnml390]

Bump bump

[25xs]

John,

Speaking in general, the "D" orifices fit the 3-cyliner 50 thru 75hp engines and the "C" orifices fit the two barrel V4 engines.
I would not swap them between engine styles since the geometry of the inlet & outlet does affect the fuel flow thru them NO MATTER IF the orifice diameters are the same.

Do you remember your first time driving at Pineville? I loaned you my cutsuit & jacket so you could take a spin. I forgot what boat your drove...

Tom Brockmeyer 770F

[johnml390]

John,

Speaking in general, the "D" orifices fit the 3-cyliner 50 thru 75hp engines and the "C" orifices fit the two barrel V4 engines.
I would not swap them between engine styles since the geometry of the inlet & outlet does affect the fuel flow thru them NO MATTER IF the orifice diameters are the same.

Do you remember your first time driving at Pineville? I loaned you my cutsuit & jacket so you could take a spin. I forgot what boat your drove...

Tom Brockmeyer 770F

Thank you very kindly for the response, Mr. Tom! Much appreciated.

I do! That was back in 2003. Really appreciate you letting me borrow your gear that day. That boat was ours and I had driven before just playing around mostly. That was my first time ever being out on the water on a legitimate course with other boats out there as well. Was a wonderful learning experience.