Have recently fitted accessory air cleaner and slip-on mufflers (tapered turbo fatboy style slightly baffled) lifted the needle by one groove up to No 4 and upped the pilot to 37.5 but left the main at 170 (workshop suggestion).

The Question; is 4 1/2 turns out on the PMS too far and if so, what should I be looking at.

Home city is Sydney Australia so altitude and extemes of temperature is not an issue. Weapon of choice in '99 Roadstar. I have read in the 'clinic of the curse of SVS and its relationship to running too rich. Is the '99 associated with this and is the connection a real one.

Signed - Anxious from Oz

Are you using the stock needle or and aftermarket? Did you try the bike with the 35 pilot before switching? What air cleaner? 170 Mik or Dyno? You have to be real sure you have an air tight seal between the slip ons and head pipe. They're known for leaking.

Reperio wrote:
The Question; is 4 1/2 turns out on the PMS too far and if so, what should I be looking at.

Dear Anxious,

I'm surprised that you are so far out on the PMS, especially with the 37.5 pilot. Stock needle? As Musky suggested, check for air leaks upstream of the carb.

Have you adjusted the PMS by .... setting the idle to stock setting, warming bike up, slowly turning the PMS in until then engine begins to stumble, then counting the number of turns turning it out until it stumbles. Halfway between these two points is where it should be initially set.

Signed,

Doc

Hey Musky & Doc sound like I may not be the only one with a WILDSTAR carb!

Well he is from the land of 'Oz' so I would not be surprised.

Curt, maybe you should post your settings here just in case.

Doc

You really think you want two people with setting like mine riding around?

Thanks for the replies gents.
Firstly, carb is stock as are needles and jets. Aircleaner is an Arlen Ness thing that has a basic concertina circular element in it on a wire mesh. I'm not sure what your reference to 'Wildstar' means (maybe it's a US thing) and the slip-ons do have a small leak on one pipe that shows up as a small discolouration at the join after a lengthy ride.

Primary reason for the enquiry is that I suspect that 4 1/2 turns is too much but it was suggested by the workshop as was the 37.5 pilot size.

Last thing, 'Anxious from OZ' was a small joke

Air Leak(Vacuum Leak)
Is it running ok?<br><br>Post edited by: n5ifi, at: 2007/06/09 06:56

Reperio my carb is a standing joke here on the forum. It took a month and a half to get it running right and I am still not sure it where it should be. My PMS was out 6 turns and I even had one viberate out while on the road. The dealer screwed the jetting up when they put the pipes on when I bought the bike. It even has ODO on RSR baffled he would love to tear it apart. At this point I am at a 172.5 main, e-clip on 3 with spacer and two silver washers, pilot is now a 37.5 and the pms is out 3 1/2 turns. I even had a 40 pilot for a time. I have tried all mains up tp the 172.5 haven't tried the 175 or 180 yet. All may carb stuff is Baron's. Good luck with your jetting my friend. Mine got better after I put in oversized o-rings check for air leaks of just install the oversize o-rings.

Reperio wrote:
Last thing, 'Anxious from OZ' was a small joke

First thing, we suspect the Ozzies are different but we knew it was a joke


'Wildstar' is the R* bike sold outside North America. For the NA market the needle was not adjustable.

I don't have a lot of experience tuning with this setup. The needle is fatter so the jetting is different than with the Baron or DJ setups.

You can still do the WOT test (read Tech Tip) to verify if the main is OK. Try the test with the stock main and clip both on the lowest groove and the one just above it. That way you can judge if the needle is having any effect. If the lowest clip seems to affect the WOT test, then compare the two higher clip settings. Use the clip setting that has no effect. Then move down one size on the main and repeat the WOT test but keep the clip setting where you optimized it previously.

Once you know the main is OK you can try different clip settings on the needle to see how the bike acts when cold and hot. That should help you tune the clip position.

When working on the needle position you will have to re-adjust the PMS; just use the in/out to stumble method to approximate a good position.

It's going to be laborious unless you can find someone who has the stock setup with aftermarket pipes and aircleaner.

Good luck

Doc