Trout

iTrader: (1)

I have just read a letter in Car magazine that may qualify the owner for Muppet of the Century award! It is written by a Toyota Twin Turbo Supra owner so there you go!

The context is that some bloke wrote in to complain about high running costs for an Evo VI - specifically the cost of SUL...

...and I quote...

"but why fill the Evo with SUL only? Being the owner of a Japanese-specification Supra twin turbo, I spent considerable time examining the ramifications of running a high-performance Japanese car on UK fuels.

The truth of the matter is that no recalibration of fuelling systems will be required, as Japanese fuel is processed in a different way to that used in Europe and has a lower octane rating (typically 93 RON). As such, running a Japanese vehicle on standard 95RON unleaded produces much the same effect as running a European car on Super."


Personally this is either a brilliant wind up or the guy is a NUTTER (Does Ian Supra Boy know him?)

I also think that CAR magazine are hugely irresponsible publishing this without a health warning of some sort!



R

Big Bear

He obviously doesn`t mind rebuilding this engine every year then .

IWatkins

R,

Hey, careful mate, I'm not Supra Boy, I'm Celica Boy, there is a difference

No I don't know him, but he does sound like some Supra owners I have met. Most are OK, but some are on a different planet and some are not even human, I'm sure

My understanding of the fuel is that the RON rating reported to be available in Japan is basically the same as in UK, but I'm no fuel expert. It is when you talk American RON ratings that it gets confusing.

Cheers

Ian

Trout

iTrader: (1)

Ian - Oooops!

R

IWatkins

R,

I'll let you off, Vectra Boy !!!!

Cheers

Ian

Dave Thornton

Work on the assumption that Japanese fuel is 100 RON. SUL + Octane Booster is the nearest you'll get.

Mike Tuckwood

Hey Ian, that's just as bad!

<I> Isn't it actually still a celica Supra, they were when they first bought them out?</I>

Mike.

IWatkins

Oi Tuckshop, careful

Yes, they *were* Celica Supras in the mists of time, but by the time my motor was made, they were seperate models and had been a for a few years.

I don't know, some people

Cheers

Ian

Paul Olson

In the UK we use RON (research octane number) to measure octane, this is measured using a single cylinder variable compression engine runing at 600RPM. The compression is adjusted up until knock is detected.

Another octane measure is MON (motor octane number), which uses the same technique except at 900RPM. MON is typicaly lower than RON.

The difference between MON and RON is sometimes called the sensitivity of the fuel, and is a measure of how the knock characteristics vary through the rev range.

In the US fuel is sold under AKI (anti knock index), which is the average of RON and MON. As a rule of thumb US 92/93 super is about equivalent to UK 97/98 RON.

I don't know is fuel in Japan is sold under AKI or RON, either way, they have the equivalent of 100RON as we all know.

KevMac

I posted thisin January and it might help the debate.

Found this post on a Gran Turismo site in America.

Is this guy talking sense or out of his ****?

“The method of calculating octane for gasoline/petrol is different in the United States and Canada than it is in the EC. Europe's 95 octane fuel is roughly the same as what's refered to as 89-90 octane in North America, and European 98 octane stuff is roughly the same as the jurassic juice sole in the 'new world' as 92-94 octane.


Sunoco, an oil company that mainly serves America's midwest, offers 98 or 100 octane fuel that would be roughly 104 octane using the EC method of calculation. Good stuff, especially in summertime when it's not been oxygenated.


The cheapest 87 octane unleaded available in North America would be about 91 octane using EC guidlines.


The Japanese use a JIS formula to determine octane that (like JIS horsepower figures) is different yet again to what's the norm in North America or Europe.”

Hmmm, any answers?

NickM

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:<HR>Originally posted by Rannoch:
<B>I have just read a letter in Car magazine that may qualify the owner for Muppet of the Century award! It is written by a Toyota Twin Turbo Supra owner so there you go!
R[/quote]


You don't need brains to have good taste in cars, I'm fortunate enough to have both in abundance ... :-D

Bajie

Can't get the smiley right though can you, you muppet!
8)

NickM

I like to be an individual....

[This message has been edited by NickM (edited 18 October 2000).]

Trout

iTrader: (1)

Point and made are not in close proximity here

So, what do you have in abundance, brains, muppets, taste or Toyota Supras - surely some exclusive supersets there?

R