Pitzi

??

And what do the highly modded Scoob drivers use??

donutman

optimax and octane booster for a guess

Pitzi

What RON rating has Optimax got??

What about racing classes, do you guys get racing fuel in the UK??

ex-webby

Pitzi,
Officially Optimax is rated at 98.something (I think it was returning 98.6). Where as other Super Unleaded fuels are supposed to be a minimum of 97 Octane.

People can and do run with Super Unleaded + choice of Octane Booster, and some of those actually have the car specifically mapped to take advantage of that specific brew.

Race fuel is available.

I have made enquiries about this only this week and am able to locally get hold of 118 octane fuel! This is obviously very expensive at approximately £60 for 20 litres, but has the advantage of enabling you to run with much higher ignition advances etc to relinquish a fair bit more power.

Regards,
Shaun.

Pitzi

Thanks a lot for the info, much appreciated. I take it that racing fuel is the 118RON one?? But for heavens sake how can racers afford to run on that stuff??

ex-webby

I dont think race fuel constitutes a blanket 118 octane rating, thats just what I can source.

HTH

Regards,
Shaun.

Pitzi

Ok thanks. In all cases you guys are way better off than us down here

ex-webby

Talking of which a guy that works for me comes from South Africa and he explained how much difference it made whether or not you drove your car on the coast as opposed to inland in SA. Stating that driving near or on the coast a car felt like a rocket ship as opposed to driving further inland in the mountainous areas...... some thing we cannot appreciate I suspose.

Regards,
Shaun.

Pitzi

Yes, Johannesburg/Pretoria is terrible, especially for naturally aspirated cars. Thats why a Subaru makes so much sense, you tend to kick the backsides of cars that on paper should be so much quicker. the downside is you only get 93RON petrol at the pumps.

Here is the tragic reality of fuel in this country, we had the choice of the following:

93RON Leaded
93RON Unleaded
95RON Unleaded (only at the coast)
97RON Leaded
97RON unleaded
102RON Racing leaded
102RON Racing unleaded

As from the 01/01/2006 it will change to this:

95RON unleaded across the board
all higher RON will be scrapped
all leaded fuels including 102RON leaded will be scrapped

The continuation of availability of 102ROR unleaded is being discussed, as apparently its very costly to produce and they cannot change the production facilities from leaded to unleaded.

The turbocharged guys used mainly 102RON leaded, as it was a slow burning fuel suited to turbocharged engines. While the 102RON unleaded is a very fast burning fuel developed for N/A racing engines.

In both cases we will be stuffed, because if they keep the 102RON unleaded its not suited to turbo engines, and if they scrap it altogether then we will be stuck with 95RON across the range

ex-webby

Cripes.... and we think we have it bad.

Dont you get a problem with altitude though, as regards to the thinner air?

Regards,
Shaun.

Pitzi

Yes, its terrible

the turbo's suffer as well, but only lose about 6% compared to the 15-17% of the N/A cars

this coupled with crap fuel means seriously handicapped peformance