emulsion tubes

[Tapartacus]

Calling all carb experts. Bought carb kit from Randy and the emulsion tube wont fit. Tapped out old ones, new ones are supposed to just slide into place are they not? How do I tap them in with out damaging them. Also the main jet is adjustable(slotted) what is the standard clip position?

Andrew

[FJmonkey]

Calling all carb experts. Bought carb kit from Randy and the emulsion tube wont fit. Tapped out old ones, new ones are supposed to just slide into place are they not? How do I tap them in with out damaging them. Also the main jet is adjustable(slotted) what is the standard clip position?

Andrew

Call Randy, he is the FJ Super Hero in this group....

[RichBaker]

They should just drop into place.... check everything out, make sure there are no burrs on the tubes or in the carbs.

[racerrad8]

Tapped out old ones, new ones are supposed to just slide into place are they not?

1) How do I tap them in with out damaging them.
2) Also the main jet is adjustable(slotted) what is the standard clip position?

Andrew

1) That is caused by corrosion of the aluminum not allowing the tube to drop in. I have a small die grinder attachment that I put a piece of scotch brite pad on and clean the internal bore for the e-tube.

I have also had to take a green scotch brite pad and polish the upper and lower portion of the e-tube to allow it to slide in.

There are some that are still tight and I use a 6mm -1/4" drive socket on a drive handle to gently push them in. I then use and old jet in the bottom and gently push it back out. I use oil when doing this as it "hones" the surface, cleaning it and allowing them to drop in freely.

2) Compare the old needle position to the new needle to determine the stock location. From there move the clip one notch down to the taper of the needle.

Randy - RPM

[Tapartacus]

thanks Randy, what is the reasoning behind dropping the clip down one notch from stock?

[Antonn3]

if I recall correctly..aren't there alignment slots on the tubes ?
-did you align the slot on the emulsion tube with the pin to allow it to fully seat ?

Tony

[Tapartacus]

yes there are alignment slots, can't get the tubes remotely close to it
Andrew

[racerrad8]

thanks Randy, what is the reasoning behind dropping the clip down one notch from stock?

To enrichen the mid-range fuel curve and make the bike run better.

Randy - RPM

[Tapartacus]

Randy everything is back together, do I need to adjust the mixture screws now that I've raised the needles?
Andrew

[Dan Filetti]

I'd say run it, and do the blip test, to see if you need to adjust the mixture screws.

With the motor warm, blip the throttle and release.  If it hangs up a bit before settling down to idle then they need to be turned out more.  If it drops below idle before settling back at idle then they need to be turned in more.

I may have the screw turn directions backwards, someone check me on that.

Anyway, if you blip it, and release it and it settles back to idle without hanging nor dropping below idle, then well, Bob's your uncle and then you have an answer to your question.

If you want more detailed instructions (and confirmation on the screw turn directions) you can check the files section for carb cleaning instructions which have a section on doing just this test.

Give a man a fish...

Dan