Aloha,
I been wondering on whats the concept on tuning a carb. I got a 28 oko by the way
Like how do i know if the pilot and main jets are too big or to small?
Mahalos for your time
tuning carbs
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FullRace808
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patthesoundguy
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Re: tunning carbs
It takes a bunch of trial and error. First tell every one what your setup is besides the carb, what scooter its on and what motor and what size and if there are any mods. That way if someone has a similar setup you can at least get a starting point. Get yourself a cylinder head temp gauge, if don't already have one. And get a bunch of new plugs you will need them for plug chops.
Sent from my Nexus 7 using Tapatalk 2
Sent from my Nexus 7 using Tapatalk 2
Dude! Ya Can't Fix Stupid!
84 Spree stock
84 Spree Dio AF18E MHR Cylinder Arrow Pipe 28mm OKO
80 Express, 47mm DR BBKit, Weak Ends Intake, Boyesen Dual stage reeds, 19mm Delorto carb, MLM pipe
79 Express
85 Aero 80 stock
84 elite 125 stock
84 Spree stock
84 Spree Dio AF18E MHR Cylinder Arrow Pipe 28mm OKO
80 Express, 47mm DR BBKit, Weak Ends Intake, Boyesen Dual stage reeds, 19mm Delorto carb, MLM pipe
79 Express
85 Aero 80 stock
84 elite 125 stock
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patthesoundguy
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Re: tunning carbs
Oh one way way to know if the main jet is too small is a seized cylinder 
sorry I had to be cheeky 
Sent from my Nexus 7 using Tapatalk 2
sorry I had to be cheeky Sent from my Nexus 7 using Tapatalk 2
Dude! Ya Can't Fix Stupid!
84 Spree stock
84 Spree Dio AF18E MHR Cylinder Arrow Pipe 28mm OKO
80 Express, 47mm DR BBKit, Weak Ends Intake, Boyesen Dual stage reeds, 19mm Delorto carb, MLM pipe
79 Express
85 Aero 80 stock
84 elite 125 stock
84 Spree stock
84 Spree Dio AF18E MHR Cylinder Arrow Pipe 28mm OKO
80 Express, 47mm DR BBKit, Weak Ends Intake, Boyesen Dual stage reeds, 19mm Delorto carb, MLM pipe
79 Express
85 Aero 80 stock
84 elite 125 stock
Re: tunning carbs
here's a helpful article. http://enigma.lhosting.info/carbtune.html
taz 50mm bbk, 51g. rollers,1500 c spring
24mm arreche, #20 pilot, E2 needle clip on lower groove
arreche air filter
Naruku intake, reeds & block
v8 pipe
stock gears
trail tech temp & rpm gauges
24mm arreche, #20 pilot, E2 needle clip on lower groove
arreche air filter
Naruku intake, reeds & block
v8 pipe
stock gears
trail tech temp & rpm gauges
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Wheelman-111
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Re: tuning carbs
Greetings:
Nice article (and breathy French singer is very soothing) DunRite. But a guy named FullRace808 can't be bothered with all that pesky reeading, can he?
Take my advice oh-eight. Don't think about it. Save time for riding. Just screw in a 50/140 combo and whatever jet needle came with your carb. Don't worry about scooter's make, model, displacement, compression ratio, intake manifold, pipe, riding style, altitude and air filter. I'm almost certain that nothing bad will happen to your cylinder.
Nice article (and breathy French singer is very soothing) DunRite. But a guy named FullRace808 can't be bothered with all that pesky reeading, can he?
Take my advice oh-eight. Don't think about it. Save time for riding. Just screw in a 50/140 combo and whatever jet needle came with your carb. Don't worry about scooter's make, model, displacement, compression ratio, intake manifold, pipe, riding style, altitude and air filter. I'm almost certain that nothing bad will happen to your cylinder.
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Re: tuning carbs
http://scootrs.com/tech.cfm?tip=tunecarb
I read this over and over today, seems like a great source for info
I did get a bit confused on the terms: Air screw in - Less air? Air screw out - more air?
I read this over and over today, seems like a great source for info
I did get a bit confused on the terms: Air screw in - Less air? Air screw out - more air?
Last edited by knucks on Tue Dec 11, 2012 3:42 pm, edited 1 time in total.
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kingkamehameha
- CB900F
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- Joined: Sat Apr 16, 2011 1:11 pm
- Location: kailua kona
Re: tuning carbs
Correct. Are you using a cht gauge?knucks wrote:http://scootrs.com/tech.cfm?tip=tunecarb
I read this over and over today, seems like a great source for info
I did get a bit confused on the terms: Air screw in - Less air? Air screw out - more air? That's the only thing it controls right, air screw doesn't affect FUEL at all?
ua mau ke 'ea o ka aina i ka pono o hawaii
Re: tuning carbs
Edited my post but you caught the quote, LOL.
Yeah, I just installed it this past weekend. It's getting cold in Michigan, wrenching/riding season is coming to an end...
What's "normal" idle temps on an Af16?
Yeah, I just installed it this past weekend. It's getting cold in Michigan, wrenching/riding season is coming to an end...
What's "normal" idle temps on an Af16?
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kingkamehameha
- CB900F
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- Joined: Sat Apr 16, 2011 1:11 pm
- Location: kailua kona
Re: tuning carbs
These be them? http://edj.net/2stroke/jennings/