Needle jet question

[Rickrod3]

http://s910.photobucket.com/albums/ac303/rickrod3/?action=view&current=DSCF2730.jpg

purchased the needle jet in the picture shown along with the old one.
Will it work as a replacement?
will I or, should I replace all 4?
I was going to only replace the one.

TIA.
Rick

[DGXSER]

only visible difference I see is the length of the shroud. Do they have the same number of holes and size of holes in the same locations all along the shaft? Does one have the crossover hole to feed the pilot jet and not the other?

Just a few things to consider. I do not think I would change them all out. if this oen runs differently you should see it in the synch, that and the richness will be way off if it does not match the needle.

JMO

[Rickrod3]

Do they have the same number of holes and size of holes in the same locations all along the shaft? Does one have the crossover hole to feed the pilot jet and not the other?

They have an extra hole on 2 sides 2 sides are the same the holes are the same.

I has the crossover hole.

Rick

[DGXSER]

Sounds like ALOT of differences in how mcuh fuel and or air wil be getting through there and how it will mix to me. But if that is the closest thing you got, heck, give it a whirl and see what happens. Might need to jet it different and adjust the mix screw different, but may get it to work out. Beats buying a new bank of carbs anyway.