What did you do to your Supra today?

[Darkseid69]

I know Ethanol has some great performance qualities but I don't think it is all positive, even on the intarwebs.

And I have heard a number of people say Aussie fuels are rubbish but I have never seen any evidence of it. In fact, years ago I did see some evidence to the contrary, with testing showing that Caltex 98 was the best, closely followed by BP Ultimate.

I have used BP Ultimate in all my cars since forever and have never had an issue. In fact, my daily is tuned to 98 only fuels and it hasn't missed a beat in over 200,000km on BP Ultimate.

If you have done any logs or seen any online you will see what i am talking about. Australian 98 ron is equivalent to a 91 Octane fuel in the states.

Guys in America from the bowser have 10% ethanol in the fuel. That bumps your octane level, prevents knock and the engine runs smoother.

Have a read about timing corrections.

 

[Darkseid69]

I've used ethanol for going on 18 years now. I'm convinced it's just fine. Even my cars 18 years ago had no issues and I ran full E85 in them.

I totally agree, Ethanol is king and here in Australia it's made from sugarcane. I have a servo about a 2min drive from my place that year round sells E90 ethanol which is great!! And relatively cheap as well 1Usd/L roughly.

 

[SupraMike40]

installed new strut bar and charge pipe

 

[BMWAF]

Australian 98 ron is equivalent to a 91 Octane fuel in the states.

Same shit everyone says. Where's the actual evidence?

I found some articles spouting the same shit but again, zero evidence presented. If anything most of it is whinging that our fuel is "dirty" from an environmental standpoint, not low octane. ?‍

 

[i3igpete]

Same shit everyone says. Where's the actual evidence?

i suppose now that you have your ECU unlocked, you should be able to post your logs for examination to either prove or reject that hypothesis

 

[BMWAF]

i suppose now that you have your ECU unlocked, you should be able to post your logs for examination to either prove or reject that hypothesis

Sure but that's literally a single data point. All I'm saying is that other than personal anecdotes, no actual evidence has been provided. A cursory Google search provides similar results, with other people Including "journalists" openly whinging.. and I'll say it again, without a shred of empirical evidence. ?‍

 

[razorlab]

Technically 98 RON is equivalent to 93-94 octane. However, I believe what @Darkseid69 is saying is that the 98 RON, specifically in Australia, is actually more like 91 oct. Just like 91 octane in Arizona, California and Nevada here in the states is much worse than 91 oct in the rest of the United States.

If you Aussies would stop making your gasoline out of salt water crocs, maybe it would be better.

 

[BMWAF]

Technically 98 RON is equivalent to 93-94 octane.

Correct.

However, I believe what @Darkseid69 is saying is that the 98 RON in AUS is actually more like 91 oct.

Yes, I know.. and I'm saying there is no evidence of this. None. Zero. Zilch. Zip. Nada. Fuck-all.

 

[i3igpete]

without a shred of empirical evidence. ?‍

I'm sure i could post SAE or ASME articles (or hell, even a copy of the Heywood textbook) but would you even read them? For fun, here's a one-slider for you to consider. Find where ethanol is (hint, look at the carbon structures), and compare it to iso-octane straight 100 octane. (if you took combustion in college, recall that iso-octane has identical MON/RON ratings)

If you'd like to dispute, here's prof. heywood's contact info:

https://meche.mit.edu/people/faculty/[email protected]

 

[djmad]

Added some weight

So tried to offset it by removing some.

Roll bar came in ~46lbs so total weight added ~6.6lbs.

 

[razorlab]

Added some weight

Is that one bolt on each side bolting those rear bars in?

 

[BMWAF]

I'm sure i could post SAE or ASME articles (or hell, even a copy of the Heywood textbook) but would you even read them? For fun, here's a one-slider for you to consider. Find where ethanol is (hint, look at the carbon structures), and compare it to iso-octane straight 100 octane. (if you took combustion in college, recall that iso-octane has identical MON/RON ratings)

If you'd like to dispute, here's prof. heywood's contact info:

https://meche.mit.edu/people/faculty/[email protected]

Your screenshots don't actually address my claim that AUSTRALIAN 98 PETROL IS RUBBISH AND NOT 98RON/93 OCTANE.

If you read my comments again, you'll see that I'm not debating the increased power Ethanol can provide modern cars or it's lower burn temperature.. I just personally don't like using it for a variety of other well known reasons: Availability; reduced fuel economy; moisture storage issues and increased wear/oil use.

In hindsight, I think maybe you just misread my comments.

EDITED Because I was being too harsh. ?

 

[razorlab]

More E85 for the rest of us. Fine by me.

 

[djmad]

Is that one bolt on each side bolting those rear bars in?

Yeah ?.

The 2 front kickers (bars) that attach to the main hoop use the existing 4 bolt holes on each side and actually hold the main hoop by themselves.

Structurally it may not be ideal, but figured if I ever get more serious about racing I’d go the weld-in route.

 

[itzTang]

Your screenshots don't actually address my claim that AUSTRALIAN 98 PETROL IS RUBBISH AND NOT 98RON/93 OCTANE.

If you read my comments again, you'll see that I'm not debating the increased power Ethanol can provide modern cars or it's lower burn temperature.. I just personally don't like using it for a variety of other well known reasons: Availability; reduced fuel economy; moisture storage issues and increased wear/oil use.

In hindsight, I think maybe you just misread my comments.

EDITED Because I was being too harsh. ?

RON vs AKI (MON + RON) just gonna say that you can google the rest LOL