Petrol

[Adam_P]

I've not yet looked at my Fazer's manual, which I'll do either tonight or in the morning. However, I was wondering if any of the engineers on here might be able to advise me on whether putting different octane fuel into it will cause any problems/damage?

I've been putting 95 RON in it recently, just because its been easier. But the local station does 98 RON SUper Unleaded too and I wasn't sure whether I'd need to do anything to the bike (timing etc) if I used a different rating.

I've got chance of using a little bit of 100 RON stuff from - ahem - a 'source' And was wondering whether that would be okay too?

I was hoping that Kickstart might be able to assist a numpty!

Thanks in advance folks.
Adam
____________________
Colin McRae MBE 1968 - 2007 RIP
Orwell Rolls in his Grave
God is imaginary

[Retro-Man]

no problem in using the 98ron super unleaded at all
____________________
https://domharnessphotography.webs.com

[R4nger]

Normally UK bikes are not affected by this octane fuel above 95 because UK bikes are crappy or something I read from the forum so you are spending the extra money for nothing but it doesn't do any harm

[Kickstart]

Hi

Won't give you any advantage. Might loose you a tiny amount of fuel, but if it is a high lead aviation fuel then so not be surprised if it fouls the plugs.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[JonB]

Least you know it runs on petrol! Check sig. Sorry mate had to do it.
____________________
Be careful whose advice you buy, but, be patient with those who supply it. Advice is a form of nostalgia, dispensing it is a way of fishing the past from the disposal, wiping it off, painting over the ugly parts and recycling it for more than it?s worth.

[mattfuzzy]

haha not funny jon
check my sig then! haha

[JonB]

I NEVER said that!!!
____________________
Be careful whose advice you buy, but, be patient with those who supply it. Advice is a form of nostalgia, dispensing it is a way of fishing the past from the disposal, wiping it off, painting over the ugly parts and recycling it for more than it?s worth.

[mattfuzzy]

[mchaggis]

There shouldn't be any problems going up RONs, so long as it is still more or less the same fuel (unleaded). Whether you actually get any benefits from doing so without modifying the engine to take advantage of it is open to debate. The problems occur when you go down the RON scale, as the fuel burns more easily and using a lower octane fuel will cause more knocking and pre-ignition, which will destroy your little end bearings and increase wear on the bore, let alone the overheating issues.

The reason for the advanced wear and destruction of bearings is the shock waves from the pre-ignition explosions (explosion rather than a normal semi-controlled burn) drives the oil from the little end bearings and blows the oil off the bore of the cylinder. Loss of lubrication = overheating and rapid wear.
____________________
I must not be a troll...
Mmmm, Guinness
Discovering the delights of Hammerite and a 3/4" brush.

[Pat172]

exactly what mchaggis said above

the higher the RON the slower it burns

if you just stick with standard 95-98 ron you'll have no problem at all

on a highly tuned engine with modified compression you'll want to bump up the RON as McHaggis said which is why some people use additices to their fuels etc.

but anythigng from 95 to 98 (optimax, bp ultimate etc) is fine
____________________
- Suzuki Bandit N600

[dotti]

The only problem I ever had using higher octane fuels was that it made the bike backfire very regularly, when I used 97 octane fuel. I can only guess that this would be due to the exhaust ports opening while some fuel was still unburnt. When I went back to regular 91 octane the problem went away again.

Edit:
I don't know what Octane range you have over there, but here we have 91, 95 and 97/98 to choose from.
____________________
Dangerous traffic offences spotted on 50-minute trip: Lost count after 100. Number of traffic cops spotted: One, sitting by a speed-trap camera

[Robby]

Stick to normal unleaded. Your engine won't take advantage of the higher octane stuff.

As for the 100 RON, I assume its a leaded race fuel. As keith said, a highly leaded fuel can foul the plugs. If your fazer has a catalytic converter the lead will take out your cat as well.

[Adam_P]

[Kickstart]