Hello all, I'm close to bolting everything back in place on my Savage and rolling her out for my "Groundhg Day" parade.
(Is it Groundhog Day yet?)

There's one thing though that really has me stumped.

I have a nice nifty lil' Blue Box of Jets as Lancer once sent me.

I looked at the jets in my carb, they are a #130 Main and a #50 Pilot.
#130 Main, given I've stripped out the airbox and replaced the filter with a 5" dia x 2" thick K&N, will probably be upgraded to a #150.
(I have all sizes from #147.5 to #157.5)

My issue is the Pilot Jet.

The Pilot jet currently in the carb (Mikuni BS) is "thin nozzle, no pinholes on the side". I'll call it #50a for further reference.

In my "Lil'Box of Jets" I have two other pilot jets, which are completely different.
- one has a thin nozzle, and SIX pinholes on the side; I'll call it #50b.
- one has a large nozzle and EIGHT pinholes on the side; i'll call this one #50c.

So, if they're all #50 Pilot Jets, why thin/large nozzles and 0, 6, 8 pinholes on the side?
Fuel flow obviously increases going from #50a - #50b - #50c.

I also have two #55 Pilot Jets in the same "b" and "c" configurations.
I am VERY puzzled, and so is my mechanic (Europe is EFI territory since the early Y2K, so carbs and jets are getting rarer and rarer)

I also have one spare needle in my blue box of jets; it is a wee bit longer and thinner than the one currently fitted to the carb,
BUT it hase 5 notches, whereas the OEM needle is smooth and has a circlip just under the white spacer.
(Yes, I have replaced the white spacer with the two brass washers provided)
So, if I wanted to replace the OEM needle with the new "notched" needle, where should I start measuring to fit the circlip?
From the top (where the white spacer was) or from the bottom (where the needle enters the main jet)?
This is important because needle height changes according to where I start measuring.

I hope anyone of you can give me a little coaching over the weekend, I plan to go back to the workshop next monday/tuesday and fix the carb  

Ground Hog day was a couple of weeks ago.....not sure what the little Whistle Pig forecast was.

The #50 Pilot Jets will all work the same in the Savage carb.  On some carbs air is mixed with the fuel through those little holes on the side of the jet, and the jet functions as an emulsion tube.  This does not happen on the Savage carb, and the only metering that occurs is through tthe little hole at the bottom.

The needle is called the "Jet Needle", and the little brass orifice that it slides up and down in (and the Main Jet is screwed into the bottom of) is called the "Needle Jet".  The needle jet you have with the clip positions will provide more fuel flow if it is thinner.  As the slide raises the fuel flow is controlled by the size of the needle blocking the jet.....with less needle there is more hole available for fuel flow.  If you want the needle to operate similar to the original one - you need to measure down from the single clip needle and find a diameter at a specific point - then find a similar diameter on the needle with the adjustable clips....then measure up from that point to find the clip position you will need to match the existing stock needle.  Needles come in lots of sizes and the tapers can be different, and some are even double tapers......there is no way to know if a different needle will work well in the Savage.  The way they are chosen or changed is to start with a known needle and do everything you can to get the pilot jet, main jet, and slide cutaway as close as you can with a specific jet needle and needle jet.  Then if you find you need a bit more or less fuel at a specific throttle setting - you could choose a needle that is thinner or thicker or has a different taper to provide the change you want.
http://www.jetsrus.com/a_jets_by_carburetor_type/needle_mikuni.html

Not absolutely sure, but think your "130" jet is a Euro number.  Versus our "145" due to differences of cc's versus ounces metering.  or something like that.

Thanks all...

One thing I forgot to say, this carb was rebuilt and set up for me by Lancer way back in 2009...
And as the enrichment screw and other parts seemed to be messed up beyond repair (stripped threads, his own words), I actually bought a new carb from someone named Oscar (ODVELASC) and had it shipped to him. What I eventually got was a Mikuni carb which ran fine (albeit jetted for a K&N in the original airbox, and with the paper element idle was overrich) but some details were different, i.e. no thumbscrew to empty the bowl but an "L" shaped nozzle controlled by a miniature screw.

I tried getting to him but he must be TDY away or something, so I posted on RSD.

So... jets appear to be more or less OK, but the pilot jet issue really has me stumped.
Are you telling me that regardless the number of pinholes, those are ininfluential on a Mikuni BS? Only the main nozzle works?

OK...

Thank you !

BUT

Please keep them coming, you never kw when somebody might come up with a bright idea!