If my banshee is running rich............

[01bansheefox]

Can I lean out my fuel to even it out? It seems my banshee is just 1 step high to rich nothing worth rejetting over but if I do a differnt oil ratio will it help it a bit more?

[Dinner]

Adjust the air screw a little bit and see what happens, what ratio is your fuel?

[01bansheefox]

Well i always try to be a bit on the safe side so i think i do about 42:1 but would it make a difference if I cut down to like 35:1?-37:1?

[Dinner]

It will make a little difference

[pipebomb]

Well i always try to be a bit on the safe side so i think i do about 42:1 but would it make a difference if I cut down to like 35:1?-37:1?

502445[/snapback]

that's wrong. going from 42:1 to 35:1 is richening the mix not leaning it. you would be going from 42 parts gas to 1 part oil and making it richer by going to 35 parts of gas to 1 part oil. essentually your using the same amount of oil and mixing it ww/ Less gas. if you want to got leaner then you need to use Less oil to make it like 50:1( 50 parts gas to 1 part oil.) wish isn't a good Idea unless your bike is tuned perfectly to run like that, otherwise your gonna nuke your motor. remember Higher the #-Leaner the mix, lower the #- richer the mix and the ratio is always gas to oil.

[01bansheefox]

Ya sorry got it backwards for some reason I thought smaller number=smaller part. Typo.

[BLUE STREAK]

try taking the lid off the air box or at lest the snorkel on the end that is what i did went from some smoke to no smoke.

[01bansheefox]

You think i run a stock shee lol who runs a stock shee now a days? I have 34mm with clamp ons.

[Wicked98Shee]

You think i run a stock shee lol who runs a stock shee now a days? I have 34mm with clamp ons.

502754[/snapback]

 

then do it the right way and rejet your carbs ... changing the oil/fuel ratio isnt the right way to correct the jettin issue's

[Dinner]

that's wrong.  going from 42:1 to 35:1 is richening the mix not leaning it. you would be going from 42 parts gas to 1 part oil  and making it richer by going to 35 parts of gas to 1 part oil. essentually your using the same amount of oil and mixing it ww/ Less gas. if you want to got leaner then you need to use Less oil to make it like 50:1( 50 parts gas to 1 part oil.) wish isn't a good Idea unless your bike is tuned perfectly to run like that, otherwise your gonna nuke your motor. remember Higher the #-Leaner the mix, lower the #- richer the mix and the ratio is always gas to oil.

502474[/snapback]

 

wasnt even paying attention to that

[01bansheefox]

Well if i go one lower it seems to lean but right now it seems to rich ive done everything. Soooo i was asking can I just lean out my fuel a bit?

[dajogejr]

Well...this is not entirely true.

 

While going from 42:1 to 32:1 is richening the mixture, it is actually leaning out the jetting.

 

Think about this.

 

Gas will flow through a jet quicker than gas mixed with oil, right? (Thicker)...

 

Stay with me here. The more oil you have in your gas...the thicker it will be, right?

 

That being said...more oil in your gas...actually leans out the mixture a bit, since it can't flow as quickly through small...brass holes as that mixture with less oil.

 

 

Changing oil ratios should never be a substitute for proper jetting.

[odaen]

I don't think it has to do with viscocity of mixed fuel. If you run a richer premix ratio, there is less gasoline per volume of fuel.

 

So richer premix corresponds to leaner air/fuel ratio.

[dajogejr]

I don't think it has to do with viscocity of mixed fuel.  If you run a richer premix ratio, there is less gasoline per volume of fuel.

 

So richer premix corresponds to leaner air/fuel ratio.

503442[/snapback]

 

Exactly... You managed to put into two sentences what took me a paragraph...I've always been a bit long winded...

 

[01bansheefox]

So your saying If im at 40:1 I cant do like 45:1 to make it a bit more lean? I should rejet my entire carbs?