98 Plus Octane Booster

[MRHD66]

whats people thoughts one running 11:1 CR on a RB30det with 98 plus octane booster as i cant get E85 up here ( near forster NSW)

cheers

[jet_r31]

Well you woudn't have to worry about getting fuel for it after the first drive....lol

cheers

darren

[MRHD66]

well if i put 98 plus booster would be the same if not more octane then E85 and you can run something like 11:1 with turbo with E85

[jet_r31]

no, no where near..not even in the same universe...

better buy some methanol and make a mix...

cheers

darren

[MRHD66]

i forgot thet E85 burns colder ;/ so it just wont work

[WMDC35]

much higher det temp with e85, don't think you'll be running much boost with that comp on 98

as above buy a drum?

[jet_r31]

i forgot thet E85 burns colder ;/ so it just wont work

theres a massive difference in octane points...

[GTSBoy]

Octane booster is also completely unreliable and probably doesn't even add half as much octane rating as claimed.

I made some from mothballs and petrol in the 1990s that was probably at least as effective (ie it didn't really do anything).

[NYTSKY]

You can get E85 delivered in drums.

[Joshbigt62r]

You can get e85 delivered in drums but it's quite expensive isn't it compared to at the pump.? Better off going water methanol + 95-98 octane fuel preferably 98 octane and water/meth as jet_r31 mentioned.

Cheers Josh

[XR Pilot]

I looked into this a fair few years ago before E85 was available - octane booster will generally raise a fuels given octane by a few points. Ie point-something of an octane. So 98 will become 98.2 octane for example. The only way to get a decent boost in octane is to mix something like Toluene with 98 (121RON, turbo F1 cars used an 86% Toluene/14% n-Heptane filler blend. It's pretty nasty to handle but you could get it in drums as of a few years ago). Mixed at 65% 98 / 35% Toluene this will get you up to around the same octane as E85 at a much higher cost vs pump E85.

I think your only viable options are either reduce the compression ratio of that motor to run 98, run water/meth like Darren said (if you do run water/meth I'd listen to this man!), buy E85 drums or take a trip to either Newcastle or Kempsey and fill up a few jerry cans.

Edited June 17, 2013 by XR Pilot

[jet_r31]

you can spike the 98 with methanol, even 10 percent works a lot better than any octane booster out there

cheers

darren

[MRHD66]

Water meth looks like the way to go then

[WMDC35]

Octane booster is also completely unreliable and probably doesn't even add half as much octane rating as claimed. I made some from mothballs and petrol in the 1990s that was probably at least as effective (ie it didn't really do anything).

mythbusters did a test with fuel additives, the moth balls seemed to do pretty well haha

[MRHD66]

got a united servo up here with 100 premium unlead too

Edited June 17, 2013 by MRHD66

[gtr jet]

I'd be tuning it on the united 100 then. It should be fine but you might not be able to run much boost. Fill the tank up with it and stick it on the dyno.

[34GeeTeeTee]

Jerry cans from Newcastle! Its not THAT far

[ido09s]

Not only does octane booster not work, but have you seen what it does to your plugs lol

[JustinP]

I definitely would not recommend using 98 + octane booster. Due to some flooding that we had a few years ago, I got stranded in my R34 and was forced to use 91 RON fuel as it was the only option I had to get home. I added octane booster as a safeguard. Still suffered engine failure haha Thankfully I can laugh about it now! 3 years and counting and I still have not finished rebuilding it!

I would recommend the water / methanol option. But remember, as you are relying on it for everyday driving you need to make sure the setup is ultra reliable and has the appropriate failsafes.

[Super Drager]

I definitely would not recommend using 98 + octane booster. Due to some flooding that we had a few years ago, I got stranded in my R34 and was forced to use 91 RON fuel as it was the only option I had to get home. I added octane booster as a safeguard. Still suffered engine failure haha Thankfully I can laugh about it now! 3 years and counting and I still have not finished rebuilding it!

I would recommend the water / methanol option. But remember, as you are relying on it for everyday driving you need to make sure the setup is ultra reliable and has the appropriate failsafes.

Well that sounds wrong, if you weren't on boost and loading the car up it shouldn't matter. Baby the car and you can drive it on 91 octane easily. I've never seen a car so aggressively tuned on the low load part of the map that it detonates on 91 octane.

Edited June 18, 2013 by Super Drager