MY ZX50 O.E.M CARB TUNING

[zombie]

What's shaking shaka? Bat ... After re-reading I think I posted the wrong #'s but the idea is the same... Keep going up a bit!

[thebatman]

whaaaaaat up this a.m. ?  nobody in  here i am sure. yeah shaka, this was a 90 jet... my microbit size, the .838mm is bigger than the oem hole, 2 drillbits bigger.  i cant go big then come down, only jet i have..lmao. i am going to go up another drill size today and test it. since idk the sizes, its hard to tell how big the hole is compared to real jets.. hope you all are around later... thanks guys...

[thebatman]

well boys, its official...again.. I AM LOST. just pulled out a BRAND NEW NGK R plug, looked inside.. to my amazement, there is a grayish ring around it, all 3 plugs.. SOOOO, evidently my mix ring isnt the same as yours...no wonder the color never changes, WHATS THE "MIX RING"??..ie: bout 2mm UP ON the ceramic portion, correct?!?! did redrill jet tho, (.914mm bit)seems a touch better, she is louder than before, neighbors noticed it also, just now omw to store... so, should i just put oem jet an filter back on, especially since i cant find the ring??      DAAAAAAAAAAMITTTTTT!!!!!!!!!!

[art]

Stay with the bigger jet for a day or 2 should get some color on it by then to get a true read,you may still need to go bigger.If .914mm is a true mesure i think you want to be around .950

[thebatman]

tis i... just did a chop with redrilled jet(.914mm).. she runs good, can tell a bit better, louder now... idk y unless just combo of air filter, rejetting. my base of the plug was actually goldish instead of the silver base/box a bit different. anyway, i actually got some tan/brownish color JUST BELOW the grayish ring i spoke of(new plugs too). seems just under that going down thru to the metal base, the rest of ceramic is white, even the curved part is not creamy, almost unchanged there... sooooo surely i am almost there if not there!!  pray that i am..lmao!!    hey art, my next size up is a .038in/.965mm.

[art]

Ha!That might be It?How many stock jets you have,can't hurt to try,better to be a little rich than too lean,I have a hell of a time reading new plugs.I like shaka's method go rich(do no damage) than come down.When you hit the sweet spot you"ll know.

[thebatman]

man, that would be nice..lmao.. would need to chwnge cvt yet again if correct.... thats the funny part, i only have the one jet(+ my oem 1). so i was leary of boring it out too far. i did get a possible connection on sum jets tho last evening somewhere on ebay. hope i can find him..lmao   does anybody else pay attention to your pipe sounds??    i do and i could actually hear the"overdrive" again, am i wrong to listen to my pipe?

[art]

Tuning by ear old school not always perfect but that was the only way,when i was a kid.I don't think you'll need that stock jet anymore.The weights I ran before big bore were 6.5

[thebatman]

yeah, i sure hope i dont need it anymore.. then i can try to drill it out..lmao.  i went with 7.5, 7s took away top end. seems the stall is gone now, either need 7s or stiffer fly springs

[art]

The 6.5 worked great with mine the 7 with white spring and now with the larger tires 8 It's kinda confusing,but if you have the 6.5 it may get your top back,I know it sounds backwords but it works.I'm stuck right now for optmum I think I need 8.10 or 8.25 8.5 robs my low and mid,or stiffer spring.No scale yet!

[thebatman]

i gotta make sure about the jet before i redo cvt again.dam..lmao, just starting getting that part down..whew  yeah, 6.5 does sound backwards to me.. i tried 6s one time(when first started),she revved like crazy an went like 15-20mph. that was WAY OFF. wanted to go ride a bit to test her again but rain is almost here!  i can hear the pipe, she dont strain as bad today either and still hit the "overdrive". YAY!!!   LMAO

[art]

Ya thats what the 7's did with my tire change maybe heavier afterall.I went from 8.5  stock to 6.5 with the pipe and pod and got gains at both ends,they came with the next r.Sound like your damn close

[zombie]

If you go too far batman, you can melt solder into the jet, and drill it again. One size does fit all.

[thebatman]

well zombie., if i did that, how do you know the hole is straight again? it just happen?  will you check my posts today and see if you happen to agree with art about being close??   how do you REALLY know when it is good and stop?? 

[zombie]

I read thru, and you guys are on the right track. If you heat the jet enough the solder will flow perfectly, and it is softer, so easier to cut thru again, It will cut straight all by itself