I loved when Shell brought out the the 105RON ethanol blend V-power maxx
but it is no longer available
But I was thinking could you effectively make your own 'blended fuel'?
I mean you could fill a 20L jerry can with say 18L of 98RON and then add 2L of ethanol and stir, effectively making a E10 blend
I am putting it out there, but not recommending anyone try it, but seeing if there is anyone in the "KNOW"

There is probably more additives to a blended fuel though?

JUST THINKN OUTSIDE THE BOX

i would think there would be more additives but if not, BAMN we got ourselves some sweet fuel!

Why not run toluene or napthalene the octane is serious :noway:

- but it's a waste of time without being able to advance your spark which wasn't your question of course. Even if the octane can be raise is the burn time more stable, less stable, less/more sensitive to temp/pressure etc. Always wondered my my cousin's friend at Caltex made the big bickys.

Mothballs never thought of that LOL

I loved when Shell brought out the the 105RON ethanol blend V-power maxx
but it is no longer available
But I was thinking could you effectively make your own 'blended fuel'?
I mean you could fill a 20L jerry can with say 18L of 98RON and then add 2L of ethanol and stir, effectively making a E10 blend
I am putting it out there, but not recommending anyone try it, but seeing if there is anyone in the "KNOW"

There is probably more additives to a blended fuel though?

JUST THINK OUTSIDE THE BOX

Think it was V-Power Racing & quoted at 100Ron but tested at 101RON. I had the N/A 380 tuned for it with an extra 6KW output at the wheels. (169KW)

- but it's a waste of time without being able to advance your spark which wasn't your question of course. Even if the octane can be raise is the burn time more stable, less stable, less/more sensitive to temp/pressure etc.

It was previously thought that it was not possible but visit Steve Knight and he'd be able to advance your spark to cope with 98ron, we are seeing increases in kw from the masses of people that have done it.

Think it was V-Power Extreme & quoted at 100Ron Likewise?

What is the octane rating on avgas?

What is the octane rating on avgas?

In Australia, it varies. 100LL (low lead) is the most common, but a 130RON blend can be had. In the past, it went as high as 145RON.

i was reading the other night. Google Xylene. I read that a few ppl in the states have tried it, Dont know how it would work though

That V-power racing stuff was awesome! My car ran 12.9-13.0 consistantly on that stuff and i could only ever get a 13.0-13.1 on 98 octane

What is the octane rating on avgas?

Avgas 100LL is 100-102MON and generally up around 108RON but can be as high as 110, but unlike what the label says its not really Low Lead, just lower than 100/130. Older Avgas has a double octane rating, one using the F3 stoich test and one with F4 rich test. The other common one was Avgas 115/145, still used by prop military aircraft and vintage fighters. Its basically 100/130 with toluol/xylene added to boost the octane.

Cheers,
Alan

It was previously thought that it was not possible but visit Steve Knight and he'd be able to advance your spark to cope with 98ron, we are seeing increases in kw from the masses of people that have done it.

I have adjusted base ignition advance on my AWD from 5 deg to 9 deg using an adjuster plate for the crank angle sensor.


i was reading the other night. Google Xylene. I read that a few ppl in the states have tried it, Dont know how it would work though

Most 95 and 98 fuel already contains Xylene. It works very similar to toluol. You can run up to about 40% generally but with a carby car there can be starting issues above that. Paint thinners is mostly xylene and toluol.

Cheers,
Alan

I have adjusted base ignition advance on my AWD from 5 deg to 9 deg using an adjuster plate for the crank angle sensor.



hi alan, are these freely available or a custom job?

hi alan, are these freely available or a custom job?

No they are something Graham made. He might make more though if there was some interest. Main reason was to get more adv in closed loop mode and help reduce fuel consumption. We run 95 octane. It may like a bit more adv but this is a good start.

Cheers,
Alan

Paint thinners? Must remember that - next time I run out of lawnmower fuel. lol

No they are something Graham made. He might make more though if there was some interest. Main reason was to get more adv in closed loop mode and help reduce fuel consumption. We run 95 octane. It may like a bit more adv but this is a good start.

Cheers,
Alan

sure, and I presume there is no need to adjust ECU for timing if the change is being made in a physical way on the crank sensor

sure, and I presume there is no need to adjust ECU for timing if the change is being made in a physical way on the crank sensor

Doing a full reflash is the ideal way but there can be issues getting into the closed loop mapping. So if you don't want to change closed loop the way take advantage of more octane is to physically advance the sensor.

Ideally you would want to get rid of closed loop for best fuel economy. In closed loop you are locked into 14.64:1 A/F ratio. A nice combustion chamber like the Magna should burn well a lot leaner, I would think at least 16.5:1, without mis-fire and give a lot better fuel mileage. Trouble is without spending weeks on the dyno its hard to get a good overall result so I reckon its just as well to physically add spark adv and put up with compromised cruise economy.

Cheers,
Alan

there is an awsome read on toymods about tuning for E85 (what V8 supercars now run on)..


just did some dyno work with E85 fuel from united in hopper crossing as they are the only bowser in melbourne that sells it .have been using the 100 united since the shell V power got the flick
any way what i did was do a dyno run with the 100 check all the settings and check oil temp etc and then shut it down turned off tank pump and set up the out side jerry can and bosch fuel pump to connect to the fuel filter and fuel return back from the reg
checked lambda and do a few power runs
on my 3sge it has 13.5 to 1 and about 28ign timming for wot
any way what i started with was 84 lambda and for best power was 86 lambda then started to play with timming from 28 and add 1 and then 2 and last was 4 degress
any way with the stuffing around i have gained 1.2 kws at the top end and picked up 2 in the mid range and with the std timming of 28 degress
was told by a lot of people that i should get 10% increase in power and 30 % in torque
well what a waste of time and fuel to only get this much


And for you edd oates i dont think you will get as much power increase as you think you will just stay with what you have ,you will be better off unless you go up to 15to 1 comp then it might be worth it




Different story for boosted engines Glenn. Local shop has seen around 40rwkw gains at same boost....pretty common to read about this sort of gain in tuning articles in mags.

Det resistance was unbelievable....on an Evo it wouldn't det with more ign adv up to and beyond peak torque.

It would be interesting to hear the inside goss on what the V8 supertaxi's think of the stuff?




it goes on for about 4 pages, if anyone is a member of the toymods forums have a read.. it's pretty interesting to see some of the results..

There are heaps of these octane boosters. However the most popular additives include aromatic hydrocarbons, ethers and alcohol (usually ethanol or methanol).

You might want to remember that besides being very difficult to spell or remember their complete names aromatic hydrocarbon octane boosters such as benzene, xylene, toluene (aka toluol & methylbenzene), naphthalene etc are some of the known cancer causing agents and in the US and Europe all fuel bowsers have vapour return systems so you don’t get exposed while filling your car. They don’t in Australia despite an Official Govt health enquiry and recommendation years ago because the service stn operators whinged at the cost of replacing the bowser nozzles. Another major octane booster used for unleaded fuel in Australia is MMT (Methylcyclopentadienyl_manganese_tricarbonyl) also a potential health hazard as are the other antiknock additives of various toxicities (MMT, MTBE, ETBE).

tetra-ethyl lead (TEL) is the old ingredient in leaded fuel still used in low lead avgas and still available on the internet for vintage vehicles but as we all know it stuffs cats.

Here is a list of known carcinogens to stop you ever touching, breathing or reading anything again. LOL

http://www.scorecard.org/health-effects/chemicals.tcl?short_hazard_name=cancer&all_p=t

Some info on avgas

100LL
Dyed blue, 100LL, spoken as "100 low lead", contains tetra-ethyl lead (TEL), a lead based anti-knock compound, but less than the "highly-leaded" 100/130 avgas it effectively replaced. Most piston aircraft engines require 100LL and a suitable replacement fuel has not yet been developed for these engines. While there are similar engines that burn non-leaded fuels, aircraft are often purchased with engines that use 100LL because many airports only have 100LL. 100LL contains a maximum of 2 grams of lead per US gallon, or maximum 0.56 grams/litre and is the most commonly available and used aviation gasoline.


100/130
Dyed green, avgas 100/130 had a higher octane grade aviation gasoline, containing a maximum of 4 grams of lead per US gallon, maximum 1.12 grams/litre. 100LL "low lead" has replaced avgas 100/130 in most places, but Avgas 100/130 is still sold in Australia and New Zealand as one of the two manufacturers in Australia is unable to make Avgas 100LL

Before we all get too excited remember LPG is about 110 octane...... but hardly works like a "performance fuel", the octane rating is only one, but important, part of the equation but high octane does not translate to bigger bang (ie LPG) it is simply the RON number which indicates the fuels resistance to detonation hence the higher the number the more resistance. As for Avgas the fines are up to $55,000 for first offence if you are caught using it in a road car. But look if you want to run your car efficiently on high octane fuel this is the mod you have to do I did it on an Excel Twin Cam road car and got an instant 15% Dyno proven increase running on 98 RON fuel:

http://www.autospeed.com/cms/A_110350/article.html

Have fun!

PS When you've worked out which resistor to use let us all know.