BUMP

Jeez.....if I were to buy the stock needle jets on BikeBandit, they're like $26 each. I NEED to know that my friend's dad is right in wanting me to buy those before I go ahead and do it.

If this helps anybody with helping out with my problem, I just checked the filter and it's a K&N SU-5589.

http://www.knfilterchargers.com/search/product.aspx?Prod=SU-5589

What is the jetting supposed to be for that?

those notches are what we were talking about.
that's a DJ needle.  Your buddy that want's to put in all stock jets... it will work, but with a K&N you will be VERY lean.  (these bikes are lean right off the factory floor) a lot of guys will think they can adjust this with the mix screw, but that only adjusts idle mix. you crank the throttle open and it's all jets doing the mixing.

If you have a free flowing pipe or after market can, you could damage the engine running stock jetting. So if you HAVE to go all stock, go back to stock pipe and stock airbox/paper airfilter.

really need to know ... stock or aftermarket pipe???  to give you a better clue where to start.

by the way, if he puts those stock 122.5's in you'll have to put stock needles back in too. (probably not a bad idea in any case)

It's a stock pipe.

ok.

stock pipe, K&N filter in the airbox, DJ needles, 128 mains.  just change the mains to 118 (or srinath's suggestion ;of the mikuni 117.5's)

move the clip on the needle to #2 notch (2nd highest, or 2nd furthest away from sharp pointy end of needle)

after that, CHECK THE FLOATS!!! (likely one of your problems)

then assemble the carbs(making sure you don't pinch the diaphrams or lose the tiny o-rings at the tops of the carb near the diaphram),
turn the mix screw 3 full turns out (screw in all the way then back out 3 full turns)

start bike, synch carbs as needed, and adjust mix as needed

The guy who is fixing my bike kept on saying that the needles in the carbs now may or may not be the stock needles.....he says that EVERY needle jet has those notches. I tried arguing with him that they are probably DJ needles, but he wouldn't listen. So the stock needles DEFINITELY do not have those notches?

Also, really quickly just so I'm sure, in this picture, the needle jets are # 18, right?

http://houseofmotorcycles.bikebandit.com/PartsBandit/Assets/schematics/Suzuki/SU0084_013.gif

Does the GS500 take 6mm main jets or 8mm?

This site has both:

http://www.rageperformance.com/carburetorparts.asp

needle jet IS number 18.

here is a pic of a stock jet. (the two washers on the shaft arent stock,those are added in a DIY rejet, but as you can see, no notches)

8mm large round

Ah.......okay, I'm gonna show that picture to him. It's gonna be hard to convince him that I should just use different-sized main jets. He does have a lot of experience, and therefore thinks that he's right about everything. I'm just gonna have to tell him to use the 118 main jets I'm gonna get, or I'm not gonna let him do it.

not knocking the guy's experience, just with these particular carbs the guys here in the board probably are more familiar with parts and set-up

One last thing.........

(I appreciate this SO much man, you're saving my life here!)

The guy re-jetting my carbs is gonna totally rebuild the carbs (I already bought the kit) and I'm gonna have him use the 117.5 Mikuni main jets and the settings you said, but is there anything else that I might need for the re-jetting? Do you think there are any parts or anything that might have been installed wrong/not installed at all when the p.o. used the Dynojet kit?

It just feels like using the 117.5 main jets would be too easy......

the mikuni 117.5's are srinaths idea... I've never tried to adapt mikuni jets to a dynojet needle. hopefully it works

you might want to check your slides to see if they have been drilled and or plugged. see THIS TOPIC for more info on that

Well, I'm just gonna go with the stock mains and needles. Will I need anything else to replace all of the stock stuff in the carbs such as washers or anything?

5 notches = DJ ... If you want to use the K&N in air box and stock pipe ... the mains probably should be 120's ... I dunno man, no one has posted back about getting a DJ kit working right ... and I did a few last year and they didn't post back either ... You just need smaller jets ... I didn't read all the posts fully ... but 120 and DJ needles might be the best starting point ... stock needles might not be needed ... and in any case stock mains are definetly not ... in reality ... K&N in air box and stock pipe you can use 125 mains with stock needle ... I'll see if I fcan find another set of stock needles ... and if I do its $10 for the set. Send me the DJ needles when done. Then we'll all know what to set your bike to ...
Cool.
Srinath.

That would be AWESOME if you could find some stock needles for me.....then I could just buy 125 mains.

So.....don't use 122.5 mains with stock needles and K&N filter?

Oh man I forgot ... I'll look now ... BTW you want the whole kit and kaboodle ... 125 mains, 40 pilots, washers, bolts and needles ... that whole lot shipped for $30 ... yea pretty much $20+10 ... OK ... I better spend time and figure out the DJ crap ... send me Needle and 128 maybe ... when you done ...
Cool.
Srinath.

If you want a pair of stock needles, I will trade for the DJ needles.