Needle Jets. Where to get them?

[IanDMacDonald]

http://www.bestboatparts.com/index.p...37c7787917107d


http://www.danscycle.com/OEMpartfind...S1100LG_-_1980)

[IanDMacDonald]

What still bugs me, is that I get instant start with a cold bike and no choke. It's harder to start when warm.

Just a far-fetched idea, but have you checked your timing and mechanical advance? I had trouble starting as well, it was related to both for me.

[jetmechmarty]

Just a far-fetched idea, but have you checked your timing and mechanical advance? I had trouble starting as well, it was related to both for me.

You are correct! Always eliminate every electrical possibility before messing with carburetors.

[natemoen]

TC,
I hadn't thought about the springs. Mike's XS has them for $3.50 ea. That would be a good place to start! The pic of the kit at Jets-R-Us looks like K&L. I have a bunch of K&L needles. I suppose I could see what happens when I install them. I'd rather stay OEM, but those should tell me if I'm on the right track. Thanks again, TC!

Do we know that the 650 uses the same spring as the 11? Different (gets similar) carbs on different bikes. Springs very likely could be different.

[jetmechmarty]

Do we know that the 650 uses the same spring as the 11? Different (gets similar) carbs on different bikes. Springs very likely could be different.

I checked the part number over at Partzilla. According to that site, the spring is the same for both bikes.

[motoman]

Thanks, but that place has fooled me before. Click "Add to cart" and the response is "NOT AVAILABLE - OBSOLETE".

The bike runs good, so I won't mess with it this week. I'm riding to Birmingham next weekend. A little rich won't hurt with all the putting around at the Vintage Fest.

I need to update my coils, so that will come first. I'll get some springs after I build a Mike's XS order.

What still bugs me, is that I get instant start with a cold bike and no choke. It's harder to start when warm.

Possible ACTUAL fuel levels in bowls could be a millimeter +- high or enricher circuit is bleeding fuel by it. Startin' cold with no enricher is a sure sign a bit much fuel is getting past somewhere. BTW, 1millimeter of static float setting equals approx. 2.5-3mm of actual fuel levels, so equal setting of ALL floats IS critical.

[rodwerx]

Carb Needles

I hope this may help some if you decide to get new needles

Earlier this year I had to do a total clean and rebuild of my SG's carbs.
They were really bad from eight years of sitting. I checked and cleaned every thing.
Ordered my kits from GeorgeFix.
During my reassembly i noticed that the #1 and #4 needles had marks on the sides. Mounted them up to check for true and sure enough they were both bent.

I then called GeorgeFix: I had gotten one kit with a needle and was hoping to get more.
GeorgeFix said: If the kits have needles, he sells the kit that way, if not no needle. He does not have them separate at the time.

Now this the part that really matters. I mic'd the #2 and #3 needles both of them in good shape.

The 5GL-16 needle has one slot and two steps in its taper.

The the needle that came in the carb kit from GeorgeFix was for a E or F model XS11, single taper (don't remember the # right now and don't have chart handy).

I went with DynoJet kit, I know they are good and a whole lot more tuning.
The DynoJet needles are single taper like the E and F model.

As for springs you can use FZR 400W.

All this cost me couple of handfuls of hair.

[TopCatGr58]

Hey Rod,

That's good info, thanks. Do you happen to have made notes on the values of the tapers...and their locations on the needle, like how many mm's down from the mounting slots?

I wrote to JetsRus, and asked them about the kits with needles, and they said that they were separate suppliers..(probably K&L as suggested), and that they(the supplier) didn't sell the the needles separately, so they didn't have any specs on these kit needles!

Sounds like we need to get our bikes needles out and mike them at the same locations as the jetsrus infomation guide shows, and see if we can match up something similar.

We know that the later the year models, the more leaner they tuned the bikes for emissions...so I would think if we find needles similar, we could hedge towards the slightly richer side/sizes.

It's interesting to hear that the Standards have only 1 taper while the specials have 2 taper zones!? Would be good to confirm this with more sets of measurements from other members, because of the expected variability of both just measurement techniques, as well as age/worn needles. Once we get a decent database of measurements of needles, then we'll be better able to find a close replacement from what JetsRus has rather than having to go the DynoJet method, or just accepting the K&L kit ones....we know how well their Pilot jets match!

T.C.

[jetmechmarty]

Good info, thanks! I bought GeorgeFix kits, but did not use the jets or needles. K&L was the kit manufacturer. Hopefully, I'll get past this without needing the needles in the haystack.

[trbig]

Marty, have you considered the emulsion tubes? I've read on here of people swapping just those, not the needles, when they didn't LOOK worn, and it helped fuel mileage a lot.. which would mean they were running rich before.

I've got the Dynojet needles in mine, but it didn't help my fuel mileage. I've been considering trying to replace the emulsion tubes.

[jetmechmarty]

Are the emulsion tubes an available item? I'm going to ride it like it is to Birmingham and back this weekend like it is. I should replace my coils first. I acquired some Accel coils, but they turned out to be .5 ohm.

I thought I had everything perfect. Cold starts required choke. Now, no choke, instant start. It smells rich. Float levels should not have changed, right? What happened?

[trbig]

Are the emulsion tubes an available item?

Hmmm.. Not that I'm seeing.

[IanDMacDonald]

Are the emulsion tubes an available item?

3H5-14941-02-00. $27 at the above link.

[rodwerx]

Needles

T.C.

I did take measurements and notes, but will have to dig them out.

[jetmechmarty]

Just a far-fetched idea, but have you checked your timing and mechanical advance? I had trouble starting as well, it was related to both for me.

I just had the cover off to have a look at it. The advance functions when I turn the throttle. When I move the advance by hand, it is not smooth. It feels a bit like a ratchet. I have a spare and it's smooth like butter. Could this be my problem. I'm getting the red light on at 80 something miles.