Dynoing the 505sx

[Dr.Dabameros]

Put everything back together yesterday, installed fast ranchero float bowl with leak jet, swaped the acclpump spring for the ktmsx upgrade spring i found on rocky mountain atv, removed sparky from the hmp competition slip on, and to finish her off i slapped on the fuel customs intake.
Now considering it takes about 15 to 20 minutes to remove the plastics remove the carburetor and all the wiring, unplug the fuel each time we want to make a change, I thought I would get your input and see what would be a good baseline to start with. Were at 3600 ft and I was thinking starting with a 48 pilot and a 180 Main

[Kmack]

I would think you aren't too far off. Should be on the safe side, a little rich if anything, and that's a good thing. Try that and then a 175 main and see if you notice a real difference.

[Dr.Dabameros]

The 505s come with a 45 pilot and 175 main.. Thougt a 48 and 180 would b a good starting place... Does everyone use the stock needles or is there sumthin brtter out there?

[steveo525]

I think a lot of guys use the hrc kit. I have one if you want to go that route.

[Dr.Dabameros]

Yep ur right, the hrc needle is what fast ranchero uses, how much?

[steveo525]

Idk yet. I bought it a while back and never used it but opened the package to look at the number on the needle. I dont remember what I paid for it.

[quad97]

The HRC kits cost $20-$25 new. That's what I'm using too. The HRC needle is a bit richer. I'm running a 170 main with it at 3100'. A 165 works with it too and might be better on the dyno, but I noticed the 170 seems to be a little better for sustained wide open throttle in my particular machine.

[Dr.Dabameros]

for the record the letters on the hrc needle are NGPR according to fast ranchero

[steveo525]

for the record the letters on the hrc needle are NGPR according to fast ranchero

Yes, the 06 and up HRC power up kit part number is 16020-nlz-610. The kit comes with needle NGPR, 162 Main Jet and 55 Leak Jet. There is no pilot jet in the kit. If you want the one I have, I would sell it for $25, and I pay postage and Paypal fees.

[steveo525]

I also have the KTM Powerparts A/F factory screw (59031017200) if you are interested. It is brand new never used. I got it then ended up using a differrent one. $20.

[steveo525]

On its way......

[Dr.Dabameros]

Damm that was fast!!! awesome brutha, thank you again!