Different jets

[carrapi]

Hi everybody,

I have these 150 jets that I bought some time ago, and I only now noticed they are different.
Left jet in photos is stock




can I still use them?

 

[Fire-medic]

OEM in the USA is 152.5, the ones on the right look different, but if they're following the Mikuni system of numbering, they're 1 size smaller than stock. They appear to have a taper to the hole/orifice, which is how Mikuni does it.

 

[carrapi]

The hole size follows the Mikuni numbering.
The thread is identical.
My question is more about the outer diameter, which is larger, and whether it has any adverse effects.

 

[Fire-medic]

I'm not a flow dynamics engineer but I cannot see where that would affect things.

 

[carrapi]

I'm not a flow dynamics engineer but I cannot see where that would affect things.

When I have time in the next few weeks I will try it

The worst that can happen is having to go back to stock jets