Ex-500.com - The home of the Kawasaki EX500 / Ninja 500R - Reply to Topic
Thread: wont rev past 5500 ? '93 model Reply to Thread
Title:
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now



In order to be able to post messages on the Ex-500.com - The home of the Kawasaki EX500 / Ninja 500R forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
2-11-2020 9:27 AM
Sh00bs
Quote:
Originally Posted by Kevinl7778 View Post
Now what am I going to do at lunch time?



ride your bike in and go for a ride on break?
2-10-2020 11:34 AM
ducatiman
Quote:
Originally Posted by Kevinl7778 View Post
Now what am I going to do at lunch time?
eat, dammit
2-10-2020 11:20 AM
Kevinl7778 Now what am I going to do at lunch time?
2-5-2020 6:39 PM
Sh00bs That was my issue... she runs perfect all the way out. Thank you all for bearing with me, being patience, not lashing out at my ignorance lol

This last time I had the carbs apart to put stock jets and needles in i forgot it was suppose to be left open.. so i capped it

Now to get my steering straight and she'll be all set
Thank you all again! Great forum
2-5-2020 5:17 PM
fog on post #5 (of 105) I said
"check carb vent hose. if you still have one throw it away.

FOG"


What do you think I meant by check? or throw it away

FOG
2-5-2020 4:58 PM
ducatiman
Quote:
Originally Posted by Kevinl7778 View Post
Are you keeping that "Red" Vac cap on the carb vent line while running, this will cause fuel starvation. Its the vent for the carb so the fuel can displace the air in the carb and to drain any overflows.
Bingo!.....give that man ^ a "see gar".....no brainer .....vent rail must *always* be open to atmosphere, whether using vent hose or running without
2-5-2020 2:01 PM
Kevinl7778
Watching

The anticipation is killing me!
2-4-2020 11:58 AM
Sh00bs that red cap is my issue then...
new petcock flows fuel TO the carbs fine but i havent checked flow out of the bowls. lemme see this afternoon and report back

progress is progress....
2-3-2020 12:55 PM
Kevinl7778 What kind of fuel flow are you able to see on the output of your secondary filter? I might put a couple drain lines on the float bowls and open them up to be sure the petcock and filter are allowing enough flow for anything greater then idle.
2-3-2020 12:48 PM
Kevinl7778 Are you keeping that "Red" Vac cap on the carb vent line while running, this will cause fuel starvation. Its the vent for the carb so the fuel can displace the air in the carb and to drain any overflows.

After a carb fix on my 93 I went out for a test ride and she started to die at 100 on the way home, pulled over and it would start then started but struggled, found the ziptie keeping my secondary fuel filter was pinching the vent line so when I drained the fuel bowls they had a hard time refilling.
2-2-2020 8:36 PM
Sh00bs Delay getting the needles, but I bought a set of used carbs for $60 shipped lol needles are definitely oem n36n's... and now I have parts!
Got the new 35 pilots and 130 mains in it
Starts right up! Idles fine with choke on while warming up, but as soon as I give it gas, she dies. Let it warm up for about 4 mins and same thing 😕
Reset the air fuel screws to 2 turns out, same thing

So to recap, I'm back to a stock bike with new 35 pilots, new 130 mains, 2 turns a/f out, has a aftermarket drop in filter, twins system has been deleted and airbox hole from that was plugged, 2 caps on the carb vac lines and a cab on the top center line since I put an aftermarket gravity fed petcock on it > so 3 vac caps total on the carb and 1 on the front top of the box
New ignition coils, new plugs. Confirmed spark on both

Full muzzy exhaust

Thoughts ? Carbs are spotless on the inside, I think I can get a pic uploaded
1-14-2020 10:22 AM
Sh00bs realized i didnt order the needles... anyone have some laying around before i spend about $45 on fleebay ?
1-10-2020 11:36 AM
ducatiman ^ bingo

you had a jet kit in there, or some remnants thereof. Factory supplied 35 pilots, 130 main and N36N needles aka "stock jetting"

************************************************** ****************************************
an aside for discussion purposes .....when encountering jet kitted carbs I become quite suspicious, a common misconception that "more fuel = more power" thus folks have a tendency to grossly overfuel, even "modding" to accomplish.

I recently found a set of jet kitted 250 carbs with *correctly marked* pilots but upon indexing (measuring) them, I found them drilled out to the equivalent of 2 sizes larger. The owner was complaining of running rich to the point of fuel stink out the exhaust, and still running with pilot screws *closed*. Between the combination of oversized mains, drilled pilots, shimmed thin kit needles the thing was swimming in fuel.

Point being, you never know what prior hands have done (or not done) until close component evaluation....and what a part is marked should not be assumed correct until confirmed. Some of the "mods" are actually destructive... taking a drill bit to brass float valve seats comes to mind, or hammering them in attempt to remove (they are not replaceable) These destroyed carb bodies are unrepairable....trash.

Sorry, rant over.
1-10-2020 10:54 AM
fog the stock needles have a fixed head, not circlips

FOG
1-10-2020 9:52 AM
Sh00bs
Quote:
Originally Posted by ducatiman View Post
uh, the term stock jetting includes needles. N36N ...you order them too? (sticker shock)

Again, the #72 refurbs would have offered quick, efficient solution over 30 days ago.



do i have any reason to believe i dont have the N36N needles in there now ?



agreed, but im stubborn and like to try to make things work as is before putting money out
1-10-2020 9:26 AM
ducatiman uh, the term stock jetting includes needles. N36N ...you order them too? (sticker shock)

Again, the #72 refurbs would have offered quick, efficient solution over 30 days ago.
1-10-2020 7:10 AM
Sh00bs
Quote:
Originally Posted by ducatiman View Post
on 12/5 post #22 of this thread, refurbs were suggested (with stock jetting included)

valid. lemme get a hold of some stock jets and i'll check back in. im getting good at having the tank off and these puppies off in maybe 5 mins max now


edit: just ordered... says 7 days shipping. hopefully by mid/late next week i'll have em and can update
1-9-2020 3:35 PM
ducatiman on 12/5 post #22 of this thread, refurbs were suggested (with stock jetting included)
1-9-2020 3:05 PM
yorkie
Quote:
Originally Posted by Sh00bs View Post
wouldnt that require me putting the stock exhaust back on ? which i dont have, nor the jets.... unless you got the hookup ?

Edit: Hey at least im not one of those guys on here for a week or two then never log on again
listen to FOG and take notice. no jets other than stock are right. 130#mains 35#pilots too big it runs rich too small it runs weak. only the correct needles N36N have the right profile non of the clip type needles have the right profile [don't ask how I know] and the height is set as it's non adjustable. I have two GPZ50's [EX500] one has stock pipes the other a Motad 2 into 1 both run just the same with the idle and pilots adjusted. both bikes have the fog mod and KN filter.

both bikes rev evenly up to 6/7k at a sombre rate [that's normal] then take off like a screaming banshee to the red line. except in top 6th were the top revs are limited by the gearing only reaching 9.5k [117mph] but that is fast enough for me thanks.
1-9-2020 11:54 AM
Kevinl7778 I cut the excess handle meterial off of a small craftsman flathead, I ran mine between 2.5 and 3 turns out.

https://www.google.com/url?sa=i&url=...AAAAAdAAAAABAD
1-9-2020 11:31 AM
fog I told you way back when do the fog mod, or at least read it. stock jets work fine with the tooter.
DID you ,can you check the cam timing? almost all are retarded, but don't think it can skip time and still run. Valves hit pistons.

FOG
1-9-2020 10:23 AM
Sh00bs
Quote:
Originally Posted by fog View Post
ya think after 87 post you would just put the stock jets back in

FOG

wouldnt that require me putting the stock exhaust back on ? which i dont have, nor the jets.... unless you got the hookup ?






Edit: Hey at least im not one of those guys on here for a week or two then never log on again
1-9-2020 10:10 AM
fog ya think after 87 post you would just put the stock jets back in

FOG
1-9-2020 9:14 AM
jorge moros Just add a 1/4 ratchet to bit adapter or some layers of electrical tape.

1-9-2020 7:12 AM
Sh00bs soooo... now it's good up top, like above 6500 or so, pulls well. but down low it's hesitant, like a lot. i guess im getting close. gonna play with the a/f screws a bit and see what i can make happen

anyone have a good tool they use ? the screws are in a shitty spot :/
ive been trying to find a really small flathead to use or even the tip of a universal screwdriver
This thread has more than 25 replies. Click here to review the whole thread.

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

 
For the best viewing experience please update your browser to Google Chrome