TOPIC:

ok i recently got my bike going
after about 8 yrs of storage
and a boat trip from england to the usa
timing advance mechanism was siezed
so replaced that with help from the old kaw guy
and dumped the fuel injection for
Mikuni bs34mm carbs off a cop bike
now after reading
every thing here need a little advice plz.

first service kits for the carbs are way out of my price range right now (80 bucks or so)with insurance plates and a inspection next week
can someone tell me the o ring sizes so i can get them from my local napa.

and second i may have mis read my MAIN 127.5 PILOT 7.5?
what size for my set up.

Post edited by: kano, at: 2006/10/07 22:19

Post edited by: kano, at: 2006/10/08 23:28

just to confirm MAIN 127.5 PILOT 7.5
and head looks ported as inlets are smooth and are nice and flush with the inlet manfold rubbers.

too small ?
let me know.

Post edited by: kano, at: 2006/10/08 23:26

Which bike are these carburetors off of? Main jets are #127.5 on many of the 1100 models... in other words, stock jetting. You might describe your pipes, airbox and engine mods, if known. Without knowing the bike and some details, I doubt you will get any good help rejetting.

i thought id given you the info

but here go's carbs came of a kz1100 cop bike
engine is a gpz1100b1 bored out to 1170 and pistons are 3mm over size.
head has been ported.
exhaust is a lazer performance 4 into 1.
Mikuni bs34mm carbs (with the 4 breathers next to the adjust screw bunged)
1 and a half turns out.127.5 main 7.5 pilot,
cams are stock allthough i have a set of high lift cams im gonna send off to be doctored.
k and n air filters(pods).
george if you need any more info than that let me know.

Post edited by: kano, at: 2006/10/09 15:08

kzrider.com/component/option,com_joomlab...w/id,79744/catid,10/

Post edited by: kano, at: 2006/10/09 15:09

I didn't realize that all that stuff in your signature was your carb set up... in any case, run #140 main jets and #40 pilot jets; since the jet needle isn't adjustable on US models, I have found it doesn't need shimmed. If you have jet needles with various clip positions, you can likely leave it on the 3rd clip slot.

You can leave the pilot mixture screws at about 1.5 turns out. I don't seat these screws but put the tips flush in the holes in the venturi then back them out as they tend to break off easily if seated so about 2 turns if you seat them, I guess. If you get up near redline with your bike and it starves for gas a bit at higher rpms, try some bigger mains. The settings I noted are pretty much for a stock bike (like my KZ900 test bikes) using pods/aftermarket pipes. I have tested stock 750s, 900s and 1000s with this combo of jets and it works great. Since you bike is beefed just a shade, if you run out of gas, try some larger mains... you should need to go up over #145s though... I guess #142.5s would be a decent starting point if you just wanted to get one set and not experiment.

ok dude thx for your advice
now i need to find someone
who sells the jets lol
ill try e bay find most things there.

THX AGAIN GEORGE
im sure you get tired of answering these questions lol.

Post edited by: kano, at: 2006/10/09 20:51

Kano, just a heads up - don´t know if you have a manual, but my 1100 manual has this note about the BS34s:

"Kawasaki uses reverse type main jets, which have a round head. Do not substitute hex head Mikuni or Amal jets. The numbering systems are not equivalent; a given jet number will flow different amounts of fuel".

i just ordered my new jets from z1enterprises
ill check when they get here.
thx for the heads up.

Kano,

I just rebuilt my BS34's . I installed a dyno kit in them. My mechanic who restores Z's by the way told me to go with 155's on the main's. I haven't installed them on the bike so I can't tell you how they run.

Good luck!

yeh dude i saw them and i thought id done a good job on mine lol.
how much difference did the dyno kit make on the carbs?
im gonna do a couple of runs on my buddys dyno rolling road to see if the jets are big enough as there isnt any roads long enough to truly test the bike out here on the island max speed limit is 45 lol yeh right!!!!