Do all modern Chinese scooters require premium gas? By mike932 (Read 2,405 times)

[davec]

pure-gas.org/?stateprov=CO

for those that want to know where to get ethanol free gas

[rapidjim]

May 10, 2015 19:10:13 GMT -6 davec said:

pure-gas.org/?stateprov=CO

for those that want to know where to get ethanol free gas

Both my local stations are listed.

[cyborg]

"Both my local stations are listed.",,,lucky slob,,,the only ethenol free gas i can get around here is a 76 staion that sells race gas,,,at $9.00 per gallon,,,ouch

[solanocycle]

KYMCOs usually call for 87 octane. Most brands call for 91, but since 91 isn't readily available in the US, you run 93. Personally, I think the vast majority would run fine on 89 or even 87 as the previous person mentioned.

[clonedrone]

May 8, 2015 7:23:14 GMT -6 rapidjim said:

May 7, 2015 16:01:25 GMT -6 jerryscript said:

www.consumer.ftc.gov/articles/0210-paying-premium-high-octane-gasoline

This article pertains to cars, a different animal than a motorcycle or small engine.

Most motorcycle manufacturers suggest 93 (premium) octane or higher. Ice bear recommends 91 octane or higher by the owners manuals. I have seen many scooters with a sticker by the gas fill saying 92 or higher. The bigger issue is ethanol, esp if the scooter sits for long periods of time. Around here we can still get non-ethanol premium fuel, the pumps are marked, For use in motorcycles, vintage cars and off road motors. As I said earlier, ethanol eats rubber, which is not a big deal in cars since there is very little rubber lines in the fuel systems now. Older dodge mini vans had an issue with the rubber fuel lines at the fuel filter, deteriorating from the inside out due to ethanol, they now use hard plastic lines. I use to be skeptical of this until a friend told me to try something, I took a small mason jar filled it with ethanol based fuel, then put a piece of rubber gates fuel line in it, put the lid on and let it sit on the self for 30 days. The rubber turned to mush. Now imagine those particles getting into the fuel bowl of your carb. And yes in the liquid state it will get past the filter.

This is Spot On Gents.
My peeps in the power equipment bis are selling a couple hundred carb kits a season and at least half that in New Carbs.
My Kart days were on a Yam KT-100 Stock appearing Open Fuel.
We ran Methanol, and you have to flush the engine with Gas pre-mix after the race.
I see both my local Real Gas outlets are, Non ethanol 87 Octane is $2.49, 93 Oct $3.09
I keep both the scoot and the CBR filled,with a extra 5 gallons here at home.

Static Compression ratio is not the only factor in Octane Requirements.

Carry On!

[skunkhome]

Well, when you start looking at octane make sure what grading system they are referencing.  In the US and Canada the octane ratings are what is called pump octane.   Pump octane scale  is a lower number than the research octane scale used in Europe and Asia.   If your scooter calls for 92 octane RON then that is the same as 87 octane AKI (R+M)/2, in US and Canada.  My little Japanese Honda CH80 calls for 92 RON in the tank but that is Regular gas, 87 Octane here in US, Canada and in Australia and New Zealand.  

[cyborg]

I think the four valve combustion chamber ( modern design) shape is why the newer scooters do not require higher octane fuels because even tho they have a higher compression ratio , the correct squish areas suppress preignition ,,,that's my take on it anyways ,,,the old two valve head looks like a modified hemispherical design,,,,talk about ancient design,,,,I think Moses ran one of those things in his chariot before he got kicked out of Egypt for killing that guy,,,

[skunkhome]

Wow! $9/gal for ethanol free racing gas?  I can get regular ethanol free gas here for about 30¢ above ethanol adulterated gasoline costing about $2.299/gal. 

[cyborg]

I wanna move in with you

[Guitarman]

What?? Gas under $5?

[cyborg]

I know the popular gas stations names in HI,,,,Ben Dover,,,

[skunkhome]

May 13, 2015 19:53:17 GMT -6 cyborg said:

I think the four valve combustion chamber ( modern design) shape is why the newer scooters do not require higher octane fuels because even tho they have a higher compression ratio , the correct squish areas suppress preignition ,,,that's my take on it anyways ,,,the old two valve head looks like a modified hemispherical design,,,,talk about ancient design,,,,I think Moses ran one of those things in his chariot before he got kicked out of Egypt for killing that guy,,,

My Piaggio BV250 requires a minimum of 90 octane AKI (R+M)/2 method.  I have to run premium. 

[Guitarman]

Lets not forget Nokissfirst Fuel Stop.

[skunkhome]

Don't have that far to drive in HI. Lol

[Guitarman]

I quite often put 100+ miles a day on my bike.