98 vs 91 Fuel

hooksey said:
Good luck finding 95 in the near future ! On the way out the door as sale volume is low.  :o
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Volume use will increase when they dump 91 as it has too much sulphur.

I posted this link earlier in the thread but obviously no one bothered to read it
http://www.news.com.au/finance/money/costs/regular-unleaded-petrol-facing-crackdown/news-story/f7f4d44134051cc4d2b286b2adfa89f3
 
Davo said:
Volume use will increase when they dump 91 as it has too much sulphur.

I posted this link earlier in the thread but obviously no one bothered to read it
http://www.news.com.au/finance/money/costs/regular-unleaded-petrol-facing-crackdown/news-story/f7f4d44134051cc4d2b286b2adfa89f3
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Is he on the forum then ?

No seriously I did hence my comments but then again it might be a fake news story just ask Donald :P
 
To day's fuel is approx is 10 to 15% Corn Ethel and rots Aluminum Carbs. Of course it's gives a bigger bang!  It's designed for EFI and Emissions.

You and I live off Corn Genetic designed by products to day  - Sadly our old Engines don't and we have to be careful.

So much for Pocahontas.
 
Vince said:
I was shocked to see a 95 browser with a small sign saying contains 10% ethinol, it was a shell station. Seen 1 only so far.
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Welcome to the real world, Vince. :D

Euro95 is required by law to contain up to 10% ethanol.  98 octane and above sold within the EU (suspecting the UK got a special offer on that as well...  ::)) must contain at least 5% ethanol.

I guess burning foodstuffs in our engines is questionable, but still better than dumping excess in the ocean...  ::)

piet
 
sfcpiet said:
I guess burning foodstuffs in our engines is questionable, but still better than dumping excess in the ocean...  ::)

piet
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Well, should be ok, seeing as how we are already burning wood in them.  :LOL:
 
wotnopetrol.gif
 
Davo said:
Volume use will increase when they dump 91 as it has too much sulphur.

I posted this link earlier in the thread but obviously no one bothered to read it
http://www.news.com.au/finance/money/costs/regular-unleaded-petrol-facing-crackdown/news-story/f7f4d44134051cc4d2b286b2adfa89f3
Click to expand...
one of 5 proposals hey !
Remove 91 and it's cheaper price and they will have a fucking riot on there hands. General popular won't stomach that !  ;)
 
Interesting conversation.

I got stuck in Killarney (QLD) a few months ago needing fuel. No 98 avaialable. I put minimal amount of 91 in with the left over of 98. probably about 50/50 mixture. The Dog ran really smooth, but lacked the punch that 98 gives. And it's still jetted for bp100.

Regards, Greg
 
Makes sense Greg.

If we accept that the higher octane fuel burns slower and smoother, then the expansion phase of combustion will last longer and give the crank a bit of extra torque.
It is no coincidence that the engine speed with the highest torque is also the point of greatest thermal efficiency.

In short, higher octane fuel should outperform weak stuff in all aspects. Of course modern engines have all sorts of gizmo's to change tune for different fuels.
 
I wonder if it evaporates more slowly when the bike is in storage too.
Less low molecular weight fractions?
Less gummed up carb jets?
 
I always drain the tank and carbs of fuel before storage and spray the internals with Red Rust Check including the cylinders.
 
Have been following this thread with interest and have come to realise I know almost next to nothing about the various fuels which are available or what I'm putting into my tank(s). Was led to believe 95 was a safe bet though only made 15 kms after mistakenly putting 95 E10 into my Guzzi before it blew up😱😱 (could be totally unrelated tho).


Today I saw something called E85 (107 octane) at a service station by the airport and, whilst I guess it must be 85% ethanol or similar), am wondering what sort of vehicles use it... ??? ??? 
 
V8 super cars specifically race ones and some versions of the street models can take it but you can only get it at certain united garages in oz, I wouldn't use it if I had a car that could take it, no one buys it, it'd be full of water
 
Nobody mentioned Methanol, very anti-knock. You can run extreme engine compression, 15 / 1 and no pinging.
What's the go with classic racing regs and using dope, or Methanol as it was called. Notice the Land Speed blokes go there.
 
Found it.
Fuel: Historic Road Racing
14.14.5.1 Fuel for historic Road Racing must be:
a) Methanol (with the exception of Period 5 & Period 6 solo machines) or,
b) Unleaded that is no more than 100 RON,
c) Which contains no additives other than those added at the point of manufacture except for lubricating oil,
d) Be a brand of fuel homologated by MA that is compatible with the Fuel Quality Standards Act 2000.
14.14.5.2 Leaded fuel, providing that:
a) The fuel is purchased from suppliers approved by Environment Australia.
 
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