Pilot Settings? 78 Carbs

[coltrain5000]

Hey Guys, was hoping to get a little input as to where everybody is at with turns on the pilot screws. I dont have a colortune.. yet. I'm not having very good luck going by ear and highest RPM method for each carb. I have searched and researched so I know stock settings are about 1.25 turns out and adjust from there. I'd like to know in general where I would be at considering my 78 carbs and drilled airbox..(more details in sig) I have mine out 2 full turns and it seems pretty good. Just a tad rich maybe? .. Plugs dont say, but the low end power is what I am judging. I went to 1.75 turns and power seemed to be down.

Thanks!!

[DGXSER]

Every engine is different, the compression and the exhaust, the air inlets, condition of carbs, all play a part in that setting. So setting yours the same as someone elses will not do you any better than where you are at since it seems to be running decent or well where you are.

Check plug color after a couple hundred miles and see where your at. if the lugs look nice and tan color, and your idle seems smooth and level. Thats the best indicator really.

[mro]

The 1 1/4 out is a starting point for a stock XS.

Tuning by ear is easiest if you can get it to idle around 850/900 rpm
which makes it easier to detect any change.

mro

[coltrain5000]

Thanks for the input...

Is each screw all over the place or are they generally about the same turns out? I suppose I will get on that color tune product and purchase.. Just hoping to get some general settings of other similar setups is all.

Thanks for the advice.

[CatatonicBug]

They are generally all similar on one bike, but 1/16th of a turn makes a difference, and as DG said, no 2 engines are the same, and no 2 carbs are the same. You may have one at 1.75, and another at 2.25.

[DGXSER]

Yes, IMO, if you have any one screw more than one turn different than another, something is not correct. Now, if compression is off in that cylinder that can also cause it.

But it is not uncommon for noen of them to be exactly the same and off by a half to full turn I would not worry about.

[petejw]

the mixture screw settings
should all be close to each other,
if there not, then more than likely
the float levels arent set exact to each other.