100 Ron And Cam Sprocket Re-tune

[Blitz]

Thanks nick...

But dont you have a gtst for your daily driving duties???

plus do you drive as much as 30-40k a year ??

I drive it to work in traffic on a regular basis actually, and as above, its very easy to putt around town in, evening in peak hour.

[wrxhoon]

I would continue to use avgas on that car Richard, not very expensive either .. I'm very sceptical on ehtenol especially on old cars .

[Beer Baron]

yes we used avgas for a while as we have the use of a 'book' to buy it, but it's a bit of a hassle to get out there and pick it up. you are right it's not that bad price wise though (just under $2 per litre last time) compared to around $1.60 for the extreme. this car is a high comp 2 litre, built with head work, cams, carillo rods, forged pistons, and 55mm bore webbers (fuel!!!111). we run a PWR alloy rad, and a earls oil cooler. so it has all the best gear. making around 220hp. and reving to as high as you want... lol usually around 8000rpm or with me in it i'm kind and take it to about 7500rpm max.

maybe we should switch back to the avgas, pull a finger out and stop being so lazy!

it's interesting to note all the different smells the fuels have. the LMS is the most hard core, it almost smells like an alchohol based fuel.

[2rismo]

it's interesting to note all the different smells the fuels have. the LMS is the most hard core, it almost smells like an alchohol based fuel.

Explains a lot!

[Beer Baron]

haha, yeah LMS for the win!

edit: if you can afford the $6 per litre. and we use at least one 60 litre drum for a race weekend.

[sewid]

haha, yeah LMS for the win!

edit: if you can afford the $6 per litre. and we use at least one 60 litre drum for a race weekend.

Wow you sniff all 60 litres? You are hardcore.

[Beer Baron]

lol, i cant help myself. it's good stuff.

[Sydneykid]

I notice that at ~3,000 rpm the power has gone from 82 rwkw to 105 rwkw, that’s a 28% increase. That is definitely noticeable and certainly worthwhile having.

We have been using Shell Optimax Extreme 100 ron exclusively since it became available in Sydney in the R33GTST. It has a PFC running the default ignition timing which knocks noticeably (dash warning) on 98 ron. In several months running the 100 ron we have not seen any dash warnings and the logged knock levels are less than 20. I have modified the injection maps for a target A/F ratio of 12 to 1.

I have heard all of the ethanol stories, eats fuel lines, blocks injectors, roots fuel pumps and gives your unborn two heads. So I have pulled the injectors a couple of times, checked the flow rates and guess what? No changes. Also I have cut the last 3 fuel filters open and guess what? No decomposed fuel hoses in there either. We also log fuel pressure and guess what? The fuel pump is showing no signs of dying. Sorry, I can’t test the unborn baby theory.

I have checked with everyone that I now who is running Shell Optimax Extreme 100 ron in their Skyline and I have yet to find anyone who can report eaten fuel lines, clogged injectors, blocked fuel filters or failed fuel pumps.

My suggestion, get on with it and reap the benefits.

cheers

PS; if you like smell, you should try Elf TurboMax, now that's a killer odour

Edited June 13, 2006 by Sydneykid

[OZ GTR35]

Finally somone that can answer a question ive been wanting to ask for a while...

How is the GTR as a daily driver doing that many Ks ?

I do the same amount of KMs per year.....and thats in GTT, is the GTR too hardcore for daily driving doing that many Ks ?

Cause even now I sometimes wish I had a second more "comfy" car for daily driving.....

The car is a great daily driver, plenty of low end with std suspension its fine on the roads, keep it under 3000rpm and it drives like a 2.6lt SSS pulsar!

[OZ GTR35]

nice work paul. my only question is which 100ron fuel? was it optimax extreme? I am getting curious about using it in my car. we just switched from avgas to extreme for the race car and didnt really notice any drop in performance, and the extreme is easier to get, and cheaper (not by much though). in fact we were testing it for the first time the other day at Aarons day. and used it again this weeked with no problems.

Optimax extream

[Swiper the Fox]

if you like smell, you should try Elf TurboMax, now that's a killer odour

ELF moto 124 smells like lollies...but is also very carcinogenic...damn!

Well done on the results with the 100 Paul....Stacey will be using this fuel for next years ANDRA sport compact events.

[OZ GTR35]

The change was very noticable on the track, since the tune I have managed a EC and Wakefield track day, the car has heaps more grunt and I have eliminated 2nd gear from both tracks, the car pulls so strong at 3000, to 3500 there is no need to drop it to second as it only rips up the tyres. Im very happy!