Jump to content
SAU Community

Recommended Posts

Sniffy,

Yeah, just keep a bottle handy for the occasions when you can't get to a decent servo.

51Jay,

Thanks for the details on the location and price, what is your suggested mixing ratio, I've heard between 15-30%.

Giz01,

Couldn't they find a decent car to perform the test on?? Just kidding. I think it is sensible when racing to add it just for added protection.

Ait,

Your the one who has been running your car on 98+booster, notice any difference? Just means that we don't advance out timing as much as we would with 100RON fuels.

Everyone,

I don't like to get covered in any chemicals, whether cancer causing or not, just be sensible and don't sniff or drink it.

See'ya

:burnout:

  • Replies 64
  • Created
  • Last Reply

Top Posters In This Topic

If the octane rating of Toluene is really 122 then adding

10% gives 100.4

15% gives 101.6

30% gives 105.2

I've decided to keep the tuning for BP 98 octane and add 10%

when racing on full boost as a hedge against detonation

51Jay,

Don't want to burst the buble but at 20% mix the RON improvement is +2.5 and 30% is the maximum recommended, therefore +3.7RON is the best your likely to get. This is taken from an article in a magazine and tested on a knock engine. This is still more than enough to protect you from detonation, therefore it is still worth doing.

See'ya:burnout:

Doesn't work like that I'm afraid, life would be so much easier if it did. The fact is you can't work it out. The only way to determine the RON(research octane number) is through the help of a $200,000 knock engine, which all oil companies use for testing of there fuel's RON.

Don't believe all of the bottles claims about there octane boosting ability either, the set there own scales which don't reflect well to real life. If you want guaranteed high octane then use an unleaded race fuel such as Elf or VP Motorsport Fuel 103, about 107RON, the highest you'll ever need to run in any normal car. With the higher octane you can advance timing and get more power also.

See'ya:burnout:

Originally posted by GTS-t VSPEC

51jay,

Toluene is good stuff, if you don't mid premixing it, just remember not to drink the stuff, some of the other guys use it as mouth wash. Go figure!:bahaha:  

See'ya:burnout:

thats cause we are tough, and have cast iron guts from drinking to much coke

Premium unleaded's like the BP Ultimate, Optimax etc. are supposed to provide better fuel economy due the increased fluid density. I don't know why an octane booster would improve the fuel economy, but if it does that's great. Not likely to offset the cost though at $20 per 60L.

See'ya:burnout:

Originally posted by 51jay

How do you work it out ??   I'm using 98 octane for the BP Ultimate and 122 for the Toluene which are the figures they claim and just multiplying and dividing the appropiate numbers

Roughly,

The BP ultimate 98 stuff would be a closer guestimate due to it having the lowest % content of aromatics.

The mixture of 30% toluene to 70% BP98 will yeild an approximate RON of 105.

Well the tune up + Toluene must have done something. Just back from Willowbank. My previous best 14.8 dropped it to 14.3 good enough to cream 3 x commydoors including a HSV Club Sport 5.0LV8.......Skylines 3...commydoors 0 :)

14.3 @95, 14.6 @ 99.7 ?? 14.8 @ 91

Was very hot, Track temp 42' Iwas leaving after 4 runs at 6.15 pm when a few other Skylines were just arriving. In retrospect I should have stayed on and run acouple more when everything had cooled down a bit.

MRE Still behind you in the mph, just couldn't make the 100.

I'm really looking forward to Wed night though, should be pay off night

GTS-T V Spec :) and especially Club Sports that do huuuuuge burnouts :)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Sounds like you've got an interesting adventure ahead here with local support if you have trouble! My guess is that, unboosted, you will be OK with a small upgrade like -9. What will happen is that once the stock ECU sees more airflow than it expects it will add a heap of fuel and pull a heap of timing to be safe because it can't understand how it could get that much air without there being an issue. You will see clouds of black smoke and it won't pull hard through the midrange and top end. So, overall it will be a bit frustrating but should be OK. If you are still nervous set the base timing back 2o through the CAS, but it will be even more sluggish everywhere. As said above through...this is not my guarantee your engine won't be blown into a million pieces, leaving you looking for very hard to find parts A better idea is get a computer with logging ASAP, wire in a wide band O2 sensor and a use remote tuner. I've done multiple cars this way and while it is not as good as a specific tune on a dyno they can get it 90% right. I'd suggest if you can afford an R33 GTR these days you can afford an ECU and tune. And if you can't afford that you sure won't be able to afford the rebuild if it goes bad in the meantime,.  
    • Yeah it would be nice if someone took the time to put that sort of information together, but there are a lot of variations in looms. I think you are making this way hard for yourself if you just want to get it running....sourcing an SR20 with the right wiring will be a billion times easier than matching the RB loom to an S15 chassis. If you do end up going this way, you just need to trace every wire in the loom with a multimeter, 95% of them will go to a location you can confirm at the ECU.....and then post it up for the next person who needs it  
    • Just top it up with water, and keep a general idea of how much you added. It is normal for water to be pushed into and pulled out of the reservoir through the cap, and it should not be more than half full or it will be likely to overflow when hot. Any decent mechanic can do a pressure test of the cooling system to confirm if you have a leak. Keep in mind if it is only leaking a little and when hot it may well evaporate before you see it hit the ground
    • I'd ask the shop what they used and use that. Mixing coolants is sometimes OK, sometimes not, and you have know the details of each coolant to know whether it's a good idea or not.
    • Is it alright to top up with just another green coolant?
×
×
  • Create New...