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by: shalomrider - Mar 21, 2013 10:07:46 GMT -5
Post by shalomrider on Mar 21, 2013 10:07:46 GMT -5
howdy, i'm gonna chime in here though the comment is from memory. first on, that particular scoot and most 150s' , are lower compression engine that won't be hurt by the lower octane fuel. second on, i read a study on fuel performance that indicated, to the surprise of the testers, that mixing fuel grades (like 87 and 89) moved the oxtane up to the 89. their surprise statement was that you could fill up with about 3/4 of a tank of regular and top off with premium and get the full effect of using all premium. therefore, and no disrespect to the "two hose" crowd, it really doesn't matter whether there is a hose for each grade.
i just moved from where i had access to non-ethanol regular to where i con't find it. it has dropped my fuel mileage by several mpg and caused me other performance issues.
lotsa miles and smiles to ya
ken
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gasoline
by: chihuahuas - Mar 21, 2013 10:27:37 GMT -5
Post by chihuahuas on Mar 21, 2013 10:27:37 GMT -5
My Scooter gets premium from a 3 hose pump. It starts better hot and cold.
144qmb with stock air filter and cdi.
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by: rockynv - Mar 21, 2013 11:55:23 GMT -5
Post by rockynv on Mar 21, 2013 11:55:23 GMT -5
My Lance Vintage 150 ran on 87 however the valves would sink into the seats faster (requiring almost monthly adjustments) then with mid grade so I learned from that and kept that bike on mid grade. My current Aprilia 250 is high compression so I run premium (4 valve heads are costly to replace).
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by: oldchopperguy - Mar 22, 2013 13:52:10 GMT -5
Post by oldchopperguy on Mar 22, 2013 13:52:10 GMT -5
Well, he had to blame something. I was raised in the 60's when they had high compression motors to pump out as much power as they could with a carbureted motor, you could get 12 : 1 from the factory. If you ran regular in those they would ping like crazy. If you didn't get the ping everybody ran regular, cuz it was just more affordable at 27 cents a gallon versus 29 cents a gallon. If you wanted to try you could retard the timing to prevent the ping. Lower octane fuel burns at a lower temperature causing it to try to push the piston back down before it should in a high compression motor. If you have a higher compression motor, sure you do have a need for a higher octane fuel.
Those high-compression cars bring back memories! Back in 1963, I did the "go-for-broke" re-do of my '57 Harley pan-head chopper. Cast cases housing a 2+" over stroker crank, and hand-turned Von Dytche steel cylinders with Chevy 409 pistons... Somewhere around 200 cid from the original 74... And, yup, you're reading it right: 14 to 1 compression.I ran it on straight Sunoco "Blue" 260 with no ping. But just ponder for a minute on kick-starting 200 cid at 14:1 compression... I weighed over 350 back then, and it still blew me over the ape-hangers several times, and sheared off the kick-start shaft once, breaking my ankle... I got very "adept" at the "run-n'-bump" in 3rd gear start!Boy, THOSE really WERE the "good old days" I think... Well... Maybe... Ah, the total insanity of youth... LOL! As they say: "There's no replacement for displacement"I DO find my little 150 wheezer runs best on premium... And non-ethanol if possible. Ride safe, kick hard! Leo (countin' calories and octane) in Texas |
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by: terrilee - Mar 22, 2013 18:11:10 GMT -5
Post by terrilee on Mar 22, 2013 18:11:10 GMT -5
Leo
i had a 72 sporty, real pearl white paint and TONS of chrome
{ after owning it for awhile, i knew why i got such a GREAT price}
dont know the compression and all that
but it had the reversed gear / brakes
and no electric start.
sorta looked like the bike in easy riders, not fonda's
cant 'member his name at the second.
i had smaller handlebars, but about the same 'rake'
that freaking magneto would move a HAIR
and the B would never start,
so i got real REAL good at the 3rd gear bump and run, also.
2:30 am , stoned drunk 120 lbs.
bump and runs---lol
good ol days
i wish to good i still had that AMFer sporty
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by: SylvreKat - Mar 23, 2013 8:07:23 GMT -5
Post by SylvreKat on Mar 23, 2013 8:07:23 GMT -5
I've used premium since that's what both the manual and dealer said.
So how does a total non-mechie know if she's overbuying or not?
Bit of history--in college, a friend took me along to fill her car, so she could teach me how to self-serve. She was almost empty. Kept pointing out the pings from her engine. Me, I heard nothing. So I'm doubtful I'd hear pings today, now that I'm a bit piccolo-deaf.
>'Kat
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by: prodigit - Mar 23, 2013 14:25:34 GMT -5
Post by prodigit on Mar 23, 2013 14:25:34 GMT -5
The fuel injected BMS TBX 260EFI worked best with 89 fuel. 91 degraded performance.
The carburated TaoTao EVO 150 works best with 91 fuel from BP; I don't notice a difference between 91, or 89 fuel from other brands, but it has more performance with 91 oct fuel from BP.
The carburated TaoTao ATM50 works best with 91 fuel from BP; and has only a marginal performance improvement with 91 fuels from other gas stations over 89 or 87 fuel.
I don't know about mixing 87 with premium, I do notice a difference on my scoots. The middle hose or 89 fuel, is not as good as 91 fuel. It may be for some scoots (like the BMS 260), because it just runs better on 89. But for scoots running better on 91 oct fuel, there's a performance loss when filling her up with 89 (which is basically a 50/50 mix of 87 and 91).
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Post by payneib on Mar 23, 2013 15:57:55 GMT -5
Can anyone give any advice for the UK? As far as I know, we've only got a choice between  and 97. I've tried them both ad can find no difference between them. I've not seen anything about non-ethanol. Ian |
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by: imnts2 - Mar 23, 2013 16:18:11 GMT -5
Post by imnts2 on Mar 23, 2013 16:18:11 GMT -5
Hi test gas will resist higher temperatures than low test gas and thus will BURN rather than EXPLODE under high temperatures.. Understand, I am not talking about air temperatues or even 100Degrees.
when we are talking about maximum power out of an engine for more than a few seconds, the difference between an air cooled engine and and water cooled one is termendous. Water cooling , properly done has grear reserve cooling capacity. Air cooling has less margins. Generally, air cooled engines operate under lower compression ratios so they are not so prone to detonation (which quickly raised temperatures even more to more destructive levels). If your scoot seems to lose power after a few minustes of hard riding, nothing wrong with trying a higher octane fuel, but in truth you really have to realize 4 stroke air cooled engines are not going to put out the power of bigger or water cooled engines. (Better yet try a larger main jet)
Also remember that we lose a lot of power with the high friction belt drive virtually universal to Scoots. Wnant a scoot to run fast, put a chain drive on it with a simple centrifical clutch. But acdceleration without gears will be pretty crappy.
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by: imnts2 - Mar 23, 2013 16:18:54 GMT -5
Post by imnts2 on Mar 23, 2013 16:18:54 GMT -5
Hi test gas will resist higher temperatures than low test gas and thus will BURN rather than EXPLODE under high temperatures.. Understand, I am not talking about air temperatues or even 100Degrees.
when we are talking about maximum power out of an engine for more than a few seconds, the difference between an air cooled engine and and water cooled one is termendous. Water cooling , properly done has grear reserve cooling capacity. Air cooling has less margins. Generally, air cooled engines operate under lower compression ratios so they are not so prone to detonation (which quickly raised temperatures even more to more destructive levels). If your scoot seems to lose power after a few minustes of hard riding, nothing wrong with trying a higher octane fuel, but in truth you really have to realize 4 stroke air cooled engines are not going to put out the power of bigger or water cooled engines. (Better yet try a larger main jet)
Also remember that we lose a lot of power with the high friction belt drive virtually universal to Scoots. Wnant a scoot to run fast, put a chain drive on it with a simple centrifical clutch. But acdceleration without gears will be pretty crappy.
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by: prodigit - Mar 23, 2013 16:47:59 GMT -5
Post by prodigit on Mar 23, 2013 16:47:59 GMT -5
Can anyone give any advice for the UK? As far as I know, we've only got a choice between and 97. I've tried them both ad can find no difference between them. I've not seen anything about non-ethanol. Ian Best link I can give you is this: en.wikipedia.org/wiki/Octane_ratingDifferent countries use different rating codes. Best to learn what code your country is using, and how it compares to US rating, or Chinese octane rating. |
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by: wilds - Mar 24, 2013 6:25:52 GMT -5
Post by wilds on Mar 24, 2013 6:25:52 GMT -5
I'm amazed you guys have so low octane... The lowest octane we have here in Sweden is ! A long time ago we had  octane... |
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Post by payneib on Mar 24, 2013 8:07:41 GMT -5
I'm amazed you guys have so low octane... The lowest octane we have here in Sweden is ! A long time ago we had octane... That's what I was thinking:  octane? What it is that? Soup? I've drunk higher octane than that! Lol Ian |
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by: terrilee - Mar 24, 2013 8:23:07 GMT -5
Post by terrilee on Mar 24, 2013 8:23:07 GMT -5
i have NO idea
but i bet the numbers are different/ translated for the USA
than for other countries.
my Chrissy had a sticker right beside the fuel "hole"
that was written in Chinese, and a bit of it was
destroyed, prob from gas, but i got on line and translated what
i could cut and paste, and i think it said to use 99 octane.
well i dont think there is such a thing.
different strokes for different countries -- LMSAO
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by: gatekeeper - Mar 24, 2013 12:08:59 GMT -5
Post by gatekeeper on Mar 24, 2013 12:08:59 GMT -5
From what I've read, China uses a different method to rate octane than we do in the U.S. Their 91 "super" equates to our 87 "regular grade.
All I know for sure is that all three of my scooters seem to run the best on our good old 87 octane.
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and 97. I've tried them both ad can find no difference between them. 
octane...
octane? What it is that? Soup? I've drunk higher octane than that! Lol