dynojet stage 3

[vinny8524]

i have a 94 with dj stage 3, vh and lunchbox filter.  it runs great everwhere but 5800-7500 rpms on a roll on in like 4+ gears.  it just struggles to pull past there on a 1/2 plus throttle roll on.  def seems like a rich lug,  i have tried to use the choke there and it does not help,  makes me feel i am right in my determination on rich.  I had the needle in the 2nd notch,  only 1 corrector in the slide with the hole in it,  and  a 134 main in it. 

i figured thats that rpms/throttle opening is  in the needle control area,  so i dropeed the needle one groove (all i had left on the top of the needle)  and it did not clear it up near enough.  what should i look into next.  I have a 128 jet from my kit,   but i think thats to big of  a jump down on mains.  should i order a 130 or 132 from dj and give that a try??

[makenzie71]

Your bike doesn't have a choke.

I don't thinka  134 is too big for your mods...try raising the needle a notch.

[vinny8524]

choke or enricher,  whatever you want to call it,  it does dump more fuel when you turn the knob to full choke.  am i worng with this idea?  btw the plug chop check also shows rich in that problem area.  so i dont think raising the needle to make it even richer is the way to go?

[The Buddha]

You probably are running your floats a bit high. I'd raise the needle back up to that 1 clip and lower your float level.
Opening throttle is controlled by float level and the speed at which the slide rises ... that is slowed by the hole you just blocked off. So floats are all you have to worry about.
Cool.
Srinath.

[vinny8524]

floats maybe a tad high,  when i removed the bowls from the carbs to see whats mains were in it they were pretty full and overflowing (even the one on the high side of the bike while on the sidestand)  i will do the u tube check tonight and see.  but would the float level just affect such a small portion of the rpm/throttle opening range and non other??  its mainly a roll on issue in the higher gears from 1/4-3/4 throttle opening once ifinally pull and nurse it past6000- 7000/7500 its starts to run like a raped ape again up to redline.   its weird and a pain in azz,  cause it happens right when your trying to pass someone from a cruise speed.

Thanks for all the help and ideas.

Srinath,  were abouts in charlotte are you.  i live in the ballantyine area.

[makenzie71]

it does dump more fuel when you turn the knob to full choke.

That's not how a choke works.

I like Srinath's idea...it's unlikely to be the jetting as you're not really running that large a main.

[The Buddha]

floats maybe a tad high,  when i removed the bowls from the carbs to see whats mains were in it they were pretty full and overflowing (even the one on the high side of the bike while on the sidestand)  i will do the u tube check tonight and see.  but would the float level just affect such a small portion of the rpm/throttle opening range and non other??  its mainly a roll on issue in the higher gears from 1/4-3/4 throttle opening once ifinally pull and nurse it past6000- 7000/7500 its starts to run like a raped ape again up to redline.   its weird and a pain in azz,  cause it happens right when your trying to pass someone from a cruise speed.

Thanks for all the help and ideas.

Srinath,  were abouts in charlotte are you.  i live in the ballantyine area.

I live in the part that butts up against huntersville. I been seeing a lot of GSes lately. I saw one on trade near gateway, red 96 I think, and a black one near gastonia. I also met a guy that had a black one at the junkyard.
Cool.
Srinath.

[vinny8524]

okay, got some time to tune and try this weekend.  tried lowering and raising needle one notch in each direction from the std dynojet recomendation.  raising the needle was not thr right way to go,  bike got real rich off idle(take off) and would just fall on its face at 5500 rpms in 4th gear and not even attempt tp pull past that.   with it in its leanest position (very top notch) it was the best its been.   ran great off idle and would slowly pull past 5500-6000 rpms.  but it still aint right.  checked my float/fuel level and the fuel level is perfect with the carb gasket/top of bowl area using the u-tube method.   I know no matter what position i put the dj needles in aint the answer,  should i attempt to lower my fuel level in the bowls slightly?  even though they seem to be in spec.   or should i look towards smaller mains from dj,  wether it be there 132,130 or 128..  also would fiddling with the slide correctors do anything,  i only have the one with the small hole in now and the other hole wide open )just tapped)

just to clarify,  i really noticed today that its a full throttle, 4th,5-6 gear issue and it just has a flat spot between 5500-7000 rpms from  a cruise roll on.  and its def to rich.

thanks for anymore help guys,  i am startng to hate this dj kit and thinking about doing individual jets or a factory pro kit.

[The Buddha]

128 is the next DJ you have right ... seems like a uge drop doesn't it ... Might wanna try that but raise the needle ...
The needle has such a steep taper ... I think its effect is to make it several sizes bigger on the mains ... But 128 still seems like a long way lean ... dunno ... may be I'll think more and tell you in a day or so ...
Cool.
Srinath.

[werase643]

well if you have 128's.....put them in....and see what happens....
it don't cost ya nothin but time

then put the needle in the middle again   and try again

[vinny8524]

well i thought the 128 would be to much of a jum lean too,  so i ordered some 130,132's from dj and installed the 130's and moved the needle back to the dj recommended 2nd grove and it def improved the bike.  not 100% yet,  still think to rich on top end.  im gonna try the 128s next and maybe even have to go to 124-126's.  plugs are just starting to show good mix and heading towards a tad lean.  I did soem searching on here and have found a few running the 128s with all the mods and even one shop put a 124 in with the vh and kn.  I would not have believed it, but my bike seems to like the smaller jets also.   if the 128 doesnt do it,  im gonna have it dynoed and see what the air/fuel mix looks like at the problem spot, before i go any leaner.