32 :1 vs 40 :1 for top end Longevity.

[Doom400]

Hello, longtime four stroke dirtbike Guy that recently got a banshee... Because he was tired of 4 strokes .. The previous owner said mix 40:1 ...clymer manual says 24 :1 ....my daughters LT 80s 32:1 ....I plan on trail riding this thing And don’t feel like doing the top end too much ...is it better to go down to 32:1 and have to mix one  batch Of gas ... For the LT 80 and the banshee.   Thanks guys 👌... Just about to make my first batch of gas for the banshee Just wondering to step up to 32 to 1 or not 

[TKJ421]

I would mix to what he has it jetted for. I’ve always ran 40:1 in mine. Never had an issue, todays oils vs when the clymer manual was made are far more advanced. Just my 2 cents.


Sent from my iPhone using Tapatalk

[hoppedupandcutdown]

I personally run 40:1, in the past I've run 32:1, my engine guy recommended 32:1

If I were you, I'd use what you use in the LT80, carry one mix.

Now keep in mind going from 40 parts to 32 parts oil you will have less fuel in the fuel/air ratio. But it is minuscule.

But if it was jetted on the ragged edge of lean, you will need to watch it.

[Deets]

I run 32:1 in all my blowers, Chainsaw’s, And weed whips. So when I got my banshee it was a given. I’m a fan of more oil. 

[Burt Reynolds]

I’ve always ran 32:1 for the first tank on a fresh motor then 40:1

[Ladle58]

32:1

 

[ClaudeMachining]

2% on everything with modern oil.

[Brooklyn350]

I’ve always ran 50:1 with modern synthetic oil. Yamalube I would run 32:1. Top ends were always clean and never had a problem. Btw 50:1 is 2%

[Deets]

Anyone else adjust ratio for temp? 
My shee is a tad lean at 30 degrees, so I was thinkin of running 40:1 instead of 32:1. So I don’t have to re-jet and then in a week when it warms back up, re-jet again. 

[ginger]

40:1 is less oil than 32:1

[Deets]

32 minutes ago, ginger said:

40:1 is less oil than 32:1

Yes, less oil means more gas in the mixture. Which will richen tune just a tad. 

Edited April 14, 2020 by Deets

[Qliphoth]

what's a proper mixture for a stock Banshee? 40:1 good enough?

Edited April 15, 2020 by Qliphoth

[ginger]

23 hours ago, Deets said:

Yes, less oil means more gas in the mixture. Which will richen tune just a tad. 

it would lean it.  less oil, leaner the motor. otherwise running no oil would be richer.   but to a certain point it drops octane meaning less power at the same time. 

 

Qlip,  proper is based off your jetting.  most people i would say run 40:1  but you will see 32:1 and you will see 50:1  

 

[ClaudeMachining]

I run 2% on everything.

Envoyé de mon SM-G965W en utilisant Tapatalk

[Deets]

47 minutes ago, ginger said:

it would lean it.  less oil, leaner the motor. otherwise running no oil would be richer.   but to a certain point it drops octane meaning less power at the same time. 

 

Qlip,  proper is based off your jetting.  most people i would say run 40:1  but you will see 32:1 and you will see 50:1  

 

I disagree, I’ve been messing with 2 strokes for bit. I’ve tested this on my Race saws a few times. More oil equals a leaner tune.