stock carb vs speed carb question

[Chaz]

Does anyone know if the jets of the stock nt and speed carb are the same size? Or is one bigger than the other. Sorry I don't have the little drill bits or wire guages to check this out myself, just hoping somebody knows.

thanks for any help with this

 

[MotorBicycleRacing]

Does anyone know if the jets of the stock nt and speed carb are the same size? Or is one bigger than the other. Sorry I don't have the little drill bits or wire guages to check this out myself, just hoping somebody knows.

thanks for any help with this

They are the same size in my experience.
70 jet

 

[Chaz]

Ok, thanks very much for the info.

So then if the jets are the same size but the speed carb has a larger throat, does that mean that, if the needle clips are in the same position, the speed carb would be running a bit leaner than the stock carb?

 

[Davezilla]

Just a little bit, the speed carb is only 1/2mm larger than the standard NT, but that's worth an extra mph or 2 on top..

 

[Chaz]

Thanks for the info, Dave