104Ron fuel

High octane petrol tends to "go off" and lose it's potency after a while. I wonder if this stuff will suffer similar issues?
 
Harvest BioEthanol E85 will retail for two pence per litre less than petrol. In Norwich, this means that it will sell for 84.9 pence per litre compared to 86.9 pence per litre for unleaded petrol.
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Bio ethanol has an AFR of about 10:1 IIRC and some cars will need the fuel lines etc to be modified as bio ethanol attacks certain rubber and plastics
 
Biofuels are the future... renewable energy that eats carbon dioxide as it grows...

If british farmers pick up on this fast enough, we could convert the currently dormant fields with no demand to growing crops for bio fuel and replace c02 in the atmosphere with nice clean oxygen before converting it back in the car....

Longer term, purer ethanol can be used as cars get adapted for it...

Keep your IC engine, and help the environment? surely not???

:D

PS. here in cyprus, 100 octane fuel is 65p per litre (54 cyprus cents) :cool:
 
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aha you've got to laugh at those mastubators for charging that much for something renewable. it should be cheap, not just 2p a litre a cheaper :rolleyes: :rolleyes: :rolleyes: :rolleyes:
 
chopchop said:
aha you've got to laugh at those mastubators for charging that much for something renewable. it should be cheap, not just 2p a litre a cheaper :rolleyes: :rolleyes: :rolleyes: :rolleyes:
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Read the comments on the original thread.

It is taxed cleverly and also is quite expensive to produce.
 
Simon said:
Read the comments on the original thread.

It is taxed cleverly and also is quite expensive to produce.
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well i kinda guessed it would be similar to the bio diesel thing, slapping a huge wad of tax on it because its being used as a fuel and even more because its used as car fuel.
 
That article (as well as many others) convieniently neglects to mention that the stoichiometrc ratio for E85 is around 9.9:1, rather than the 14.7:1 for petrol, and has an energy content of ~29 MJ/kg instead of the ~45 MJ/kg of petrol. All of which means you will need to use a lot more of it to produce the same power.

This would be slightly offset by the higher compression ratio that could be used.
 
We have a perol station in my town that has unleaded that has 10% Ethonol in it and my mums car didnt like it at all, the power kept cutting out :(
 
I think the Tesco 99ron is simply normal unleaded with 5% bioethanol and hence the octance increase.

So really the emissions and power will be better but you will need 1.5 times the amount of fuel.
 
Is it like LRP in the fact that you lose power and get less MPG due to a lower calorific value than petrol?

EDIT: Dogbreath's post answers that one for me :o

and has an energy content of ~29 MJ/kg instead of the ~45 MJ/kg of petrol.
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Whats LRP? You dont really lose power on LPG if its done properly, it has less energy so takes more litres compared to petrol but the power is still there. Most LPG cars are using old carb technology and dont take advantage of the high octane unfortunately, ie. done on the cheap.
My car is just as powerfull but only in the last few k of revs, its sluggish otherwise due to a cheap setup
 
DreXeL said:
Is it like LRP in the fact that you lose power and get less MPG due to a lower calorific value than petrol?

EDIT: Dogbreath's post answers that one for me :o
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We got more power on the dyno with lrp in our race engines than stock 95/97 ron as the fuel has oxygenators in it which act like nitrous oxide to burn the fuel more completely, but we had to run the engines with bigger jets as a result..

:cool:
 
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