MY ZX50 O.E.M CARB TUNING

[thebatman]

i could tell a big difference today!! i was smiling all over the place..lmao...no telling how much i could eventually get out of her..lol

[art]

It was i big difference on my stock build,might try to get it jetted right tomarrow,I'm torn because my over sized pistons have showed up,Probly take my other jug and head in and get it all done up.(We know how fast those machinest are  )

[thebatman]

mmmmm, oversized piston....lmao..... i wish i had the funds to get a ppl from you....            oh yeah, does anybody know why my carb is a PA instead of a PB?  whats difference???..

[art]

Thats a good question I did a day of research and all i know is they are hard to get anything for(pa or pb) It's very confusing.I think if you could find a used 20mm kiehin all would be easyer.But not as much fun!!!I think they make these just so you can't modify them.Try to stopp us! 

[thebatman]

I BELIEVE THAT ONE FOR SURE!!!!!  yeah, cuz my long return to idle gets on my nerves some!!.(better today by a touch)..  whooaa...i think a 20 would be too big with this stock rig... i was told a 15, possibly 16 would be the trick, 17 would be overkill, heard here 17 would be about the right limit.... id say i will HAVE to upgrade at sum point cuz after this wanna go to matching...lmao

[art]

You cant get the idle down with the air fuel mix?All mine were doing that when i tooned by ear.Had to turn the mix screw about a half turn  clockwize and bring the idle up a bit.Fixed all.I think you could run the 20 with the open air and pipe,It's overkill but I've been able to run my 19mm float bowl dry with bad tuneing at wot.Just alot more options with a real carb.I think the pb and pa wre made for beginner quads and mopeds.

[thebatman]

she idles good but when im running and stop at a light, etc. it takes about 15? sec to return to normal idle.....   i havent really messed with the screws anymore. did run mix screw out 1/4 ccw once but she spit more.. have mix at 1-1/4 out, idle is 2- 2-1/4? out right now..

[art]

Try going in some more,did the trick for me

[art]

I know this don't sound right but your a little to lean at idle so it takes a bit to calm down,zombie had a post somwhere  and i didn't think it was right but it was  ,had all my bikes doing it not no more!

[thebatman]

take it to 1 on mix??? 2 on idle???   in???  clockwise?? thought all the way IN cut off any air mix, out made it richer

[art]

Idle is where ever you like,but air screw should go in some,most dont like to go less than one turn out,but i had to on the hot rod The more you turn it in it will drop the idle if all is working right then set idle to your liking

[art]

Thats what i thought too on my dirt bikes but not on the scoots or was wrong all along smaller motors than i ever had little more finiky i guess 

[thebatman]

even the manual says not to go below 1... scary sh** there homeboy....lol. now is it oil or air you getting from mix screw???... how is less gonna help??   (sratching head)..guess i can turn it to 1 and see......    i gotta go crash out.......

[art]

fuel and air oil on a different rout on the people,my warrenty was voided long ago    I picture it like this when you turn the screw in you are shutting an air passage down alowing more fuel to run with less air at idle when turned out you are leaning the mix of air and fuel.Ha! and read my bottem line. Night

[thebatman]

lmao....wish you were around here so i could WATCH it done once, helps me to learn quicker,easier...lmao.......