Does the 115 jet have a smaller center hole than stock?

[SinnerDC2]

I got my 115 jet and it has a smaller center hole than stock. Should it be this way?

Thanks,
Nick

[red2003]

Originally Posted by SinnerDC2

I got my 115 jet and it has a smaller center hole than stock. Should it be this way?

Thanks,
Nick

Possibly. The stocker in my Roketa (PZ27 carb) was a 109, so 115 SHOULD be bigger assuming the Chinese use the same numbering scale as we do??? Jet numbers reflect flow rate, not necessarily hole diameter and other factors like bore taper can effect the flow of the jet. A jet with a smaller hole CAN have a larger flow rate. Slap it in there and try it out. As a side note, I used a set of torch tip cleaners and reamed my 109 jet out 2 sizes over. It made a noticable difference in the lean condition I was experiencing, and it was FREE!!! Plug is now a nice golden brown, where it was light tan-grey before.