Does poping = lean

I just finished putting the bike back together after spring break. i put emgo pods on it for the look i knew it was going to suck to tune. i saw a pdf that had a equation on it saying that you go two sizes up for pods and headers. i think the bike has a V&H pipe on it with no baffles but the tip has been cut at a angle where the label would be.

So i put a 110 main in and a 17.5 pilot.

didn't run good at all. so i looked around town and found 117.5 and 120 mains. i put the 117.5 mains in. it runs ok but it is popping at low throttle and runs good at mid throttle but seems slow at 3/4- full throttle.

so i just wanted to check that my thinking of putting a 115 main and a 20 pilot in should smooth things out. also the clip is on 4. the bike is a 78 kz1000 stock crabs.

You're still lean

You need to go up to about 125 mains

What do your plugs show?

Zacknhs wrote:

I just finished putting the bike back together after spring break. i put emgo pods on it for the look i knew it was going to suck to tune. i saw a pdf that had a equation on it saying that you go two sizes up for pods and headers. i think the bike has a V&H pipe on it with no baffles but the tip has been cut at a angle where the label would be.

So i put a 110 main in and a 17.5 pilot.

didn't run good at all. so i looked around town and found 117.5 and 120 mains. i put the 117.5 mains in. it runs ok but it is popping at low throttle and runs good at mid throttle but seems slow at 3/4- full throttle.

so i just wanted to check that my thinking of putting a 115 main and a 20 pilot in should smooth things out. also the clip is on 4. the bike is a 78 kz1000 stock crabs.

115 main and 20 pilot should get ya close....i have the same bike and stock with a vance and hines with a competition baffle....you definitely
want the 20 pilot, but since you have no baffle whatsoever, you are probably going to have to mess
with the 115 and 117.5 mains and see what works best...4 th clip is ok...i will run a 117.5 main as i have other mods, but that might change.....
as far as the emgos, you might want to gorilla glue the rubbers to the chrome...they seperate easy....i am not a carb expert nor play one on t v..but this has been my experience and what i have learned here.....good luck....keith

the plugs look white at the tips but i haven't done a full throttle chop.

while riding to bike night tonight it rode like crap and my buddies said my pipe had a constant blue flame in it. so the mains are def too big. so I'm going to order the 20 pilots and some 115 mains from Z1E in the morning. i live 3 blocks from campus so i will just walk to class till they get here Monday.

Ditch those Emgo pods. Pure junk. I had to go so high on mains just to offset the surging. Your better off with the stock airbox/ filter. Unless you want to spring for K&N pod filters. Is your timing set right also ? Plugs are the best sign of jet reading but you have to ride a it a bit to be accurate. Short rides won't tell the truth. I think 20 pilots might be large for those carbs and 115's will probably work good. I would set the needle in the middle also.

Popping is from lean condition.

You might try a stock airbox to see how many of your problems vanish.

wait a minute here! whats the needle doing in the fourth clip?? The top slot or the bottom. These things dont run for sht with that clip in the wrong slot. Is it...... A900? Is it..... A650! If they are 28's or 26's it wont run right with clip above the middle. If you have to choke it to pass cars it needs more gas. If you have to choke it to beat my bike, your gonna have a sore wrist. Put the clip in the middle, use the 120's and 17's, make sure you have a thick wire to the coils, without the spark energy it will cause a stumble on takeoff and revving. U can move the main up from there just look at the plugs. Move them up only if they show light tan in warm weather. If it's popping it's very lean indeed. You don't want white plugs-too lean and too hot.

the clip is on the 4th one from the top. i know they run lean factory and most people put it on the 4th one. the bike has the coil relay mod. it also has a dyna s and dyna coils with new plugs and wires. i'm going to try to get it tuned with the pods. i have my air box but the tubes from the carbs from the box are toast so i would have to buy new ones ($60) or new jets ($4) so i'm going to try the cheaper way that looks cooler-ish lol

Zacknhs wrote:

it runs ok but it is popping at low throttle

That sounds like you need a bigger pilot jet or to adjust the needle.

Zacknhs wrote:

i put the 117.5 mains in. runs good at mid throttle but seems slow at 3/4- full throttle.

That sounds like the main jet is wrong.