auto zone air filter mod
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auto zone air filter mod
bought a auto zone air filter for the se50,,removed the stock air box and put her on richened it a bit to try it and the only thing that happend was it sounded like a chain saw hauling *! so if want to keep this on there i need to rejet it correct? what is stock and what do you think i would need to go up to? or should i loose this air filter all together? thanksl guys
87 Honda Elite SE50
- bradthreee
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Re: auto zone air filter mod
Pull your plug and see what its doing:
Ideally you want a cardboard color.
If the plug is coming out light then you will need to upjet.
Ideally you want a cardboard color.
If the plug is coming out light then you will need to upjet.
Re: auto zone air filter mod
Go here for enough "reading spark plugs" info to make your head explode, with pictures no less.
http://images.google.com/images?q=readi ... e&resnum=1
http://images.google.com/images?q=readi ... e&resnum=1
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Re: auto zone air filter mod
You want a co-co brown color, little darker is alright but lighter isn't.
I am not a mechanic, nor do I play one on TV. Actually my advice is probably worth slightly less than what you pay to view it.
Re: auto zone air filter mod
took the liberty. I thought this one was informative.
1993 Elite - The Mad Max
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Re: auto zone air filter mod
nice thanks for the pics! ya i just wanted to make sure i can watch it and c what happens then upjet if i have to.
87 Honda Elite SE50
Re: auto zone air filter mod
Anything past #20 is a no-no with these little air cooled 2 strokes.
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Re: auto zone air filter mod
so i have the air/fuel mixture screw turned out about a full turn...i know stock starting point is a turn and a half..think this is a good starting point or should i turn it out even less? thanks
87 Honda Elite SE50
Re: auto zone air filter mod
The only thing the fuel/air mixture screw controls is idle mixture. The chances of hurting the engine at idle are next to none. Just adjust the screw for the highest idle speed. The main jet and only the main jet contols fuel and air mixture at WOT and that's when you melt a piston. You do know how to do a "plug chop" to check the mixture, don't you?kygreen229 wrote:so i have the air/fuel mixture screw turned out about a full turn...i know stock starting point is a turn and a half..think this is a good starting point or should i turn it out even less? thanks
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Re: auto zone air filter mod
a plug chop?? no i just know about looking at the color of the plug and seein if it is lean or rich... so there is a idle screw and then the the mixture screw on the carb right? the mixture screw is only an idle screw mixture as well? whats the point of the idle screw then..im confused
87 Honda Elite SE50
Re: auto zone air filter mod
A plug chop entails running your machine at WOT for at least 2 minutes and then hitting the run/stop switch to stop the engine and coasting to a stop and pulling the plug and looking at the plug to determine your mixture is. Reading a plug any other way tells you nothing important about your engine's fuel and air mixture at speed.kygreen229 wrote:a plug chop?? no i just know about looking at the color of the plug and seein if it is lean or rich... so there is a idle screw and then the the mixture screw on the carb right? the mixture screw is only an idle screw mixture as well? whats the point of the idle screw then..im confused
Yes, two idle adjustments, one to adjust the fuel and air mixture for the highest possible rpm. The second screw allows you to adjust the idle speed to the 1800 + or - 100 rpm that is speced in the manual. I have never seen a carburetor without an idle speed adjustment, even if the idle mixture was controlled by a jet (thanks EPA for nothing good) rather than a screw.
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Re: auto zone air filter mod
2 minutes is a long time at WFO.and if the engine is lean?
about 1.5 minutes in(or less) things get REAL Hot.
tuning big bore kits is serious business
about 1.5 minutes in(or less) things get REAL Hot.
tuning big bore kits is serious business
busting my knuckles on vices since
for long as i can remember
for long as i can remember
Re: auto zone air filter mod
True, very true, but "good" plug reading take awhile even with a new plug. Back when I drag raced, the plug readings were iffy at best after a quarter mile pass.mookie wrote:2 minutes is a long time at WFO.and if the engine is lean?
about 1.5 minutes in(or less) things get REAL Hot.
tuning big bore kits is serious business
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Re: auto zone air filter mod
alright cool i will do that for sure! i have nvr heard of that before, crazy. so back to the idle screw and mixture screw the mixture one is lets say your main adjustment when at idle and then the idle screw is for fine tuning the idle..sorry if im driving you crazy im just making sure i fully get itBear45-70 wrote:A plug chop entails running your machine at WOT for at least 2 minutes and then hitting the run/stop switch to stop the engine and coasting to a stop and pulling the plug and looking at the plug to determine your mixture is. Reading a plug any other way tells you nothing important about your engine's fuel and air mixture at speed.kygreen229 wrote:a plug chop?? no i just know about looking at the color of the plug and seein if it is lean or rich... so there is a idle screw and then the the mixture screw on the carb right? the mixture screw is only an idle screw mixture as well? whats the point of the idle screw then..im confused
Yes, two idle adjustments, one to adjust the fuel and air mixture for the highest possible rpm. The second screw allows you to adjust the idle speed to the 1800 + or - 100 rpm that is speced in the manual. I have never seen a carburetor without an idle speed adjustment, even if the idle mixture was controlled by a jet (thanks EPA for nothing good) rather than a screw.
87 Honda Elite SE50
Re: auto zone air filter mod
You set the mixture screw first, to the highest rpm possible. Factory starting place is 1 3/8 to 1 1/2 turns out. I prefer to then turn it a quarter turn richer as it helps off the line acceleration because these carbs have no accelerator pump, but that's just me. Then you adjust the idle speed with the throttle stop screw (1800 + or - 100 rpm)
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