Jump to content
SAU Community

Recommended Posts

i know there is a few topics on it already but they are old and i was wondering if anyone has been running straight avgas without killing the engine,

i use to run my old civic on it, but it burn out all the exhaust valves, but doesnt the rb26 have sodium filled exhaust vales or something??

not too worried bout the o2 sensors as they're prob already dead

not doing it for performance gains, just coz i get get hold of a bit here and there

Link to comment
https://www.sau.com.au/forums/topic/262343-avgas/
Share on other sites

Umm, don't run it straight, best to mix with petrol 50:50, then ignition timing can be advanced (tuned to suit of course).

Don't run a cat converter, it kills them too.

It's not street legal....

That's all we have found.

Link to comment
https://www.sau.com.au/forums/topic/262343-avgas/#findComment-4493798
Share on other sites

a few of the boys at work mix it 50/50 and throw in in their motorbikes, saying that people usually take it from the slops tank, so make sure you drain for water content before adding to your tank.

it does require a tune to run properly, i stay clear of it personally unless you can guarantee a sufficient supply to mix half half all the time and tune to suit.

Link to comment
https://www.sau.com.au/forums/topic/262343-avgas/#findComment-4494585
Share on other sites

Yes it will destroy a cat. It's leaded and it clogs up the cat. Makes it overheat to the point of glowing red and destroys it. I've seen it happen.

Dearlove, you might want to look into water/meth injection as a cheap option for the net effect of higher octane gas. Is it something you want to run all the time or just for track nights? If just track nights, you could also make some of your own high octane brew with something like tolulene (sp?) of xylene. Has the effect of taking US R/M+2 93 octane gas up to around 98 octane. What do you guys have down there? Av gas is only like 106 or there abouts IIRC.

Link to comment
https://www.sau.com.au/forums/topic/262343-avgas/#findComment-4494751
Share on other sites

lol 106? id b shitting the gear if i could get my hands on some of that...if its tuned on 98 then 106 is going to make fkn absolutely no diff other than protect ur engine slightly from det...waste of time... rather stick 100 shot up it then tune it on that crap...at least it would have some valuable effect

Link to comment
https://www.sau.com.au/forums/topic/262343-avgas/#findComment-4494815
Share on other sites

Because it contains lead, it is illegal to use it in a car complied to run unleaded. It will kill the O2 sensors, and the cat. (and de-catting is also illegal).

Before you get caught with it in the fuel tank, make sure you have a very good relationship with your local bank manager.

Link to comment
https://www.sau.com.au/forums/topic/262343-avgas/#findComment-4495296
Share on other sites

It doesn't kill 02 sensors - we have an XR6T that has covered thousands of kilometers on avgas without destroying anything - mind you it doesn't have a cat. And as for red exhuast thats crap. It leaves a white residue in the exhuast system thats why it makes reading plugs more difficult too - as they appear alot whiter ie- hotter than what they actually are.

Link to comment
https://www.sau.com.au/forums/topic/262343-avgas/#findComment-4496177
Share on other sites

Gee maybe they painted it red then. my mistake

i just mentioned it because a friend of mine run it in his Supra for a while and the inside of the tip on his cannon muffler went red.

I love SAU. Its the one place to go when you want to make someone get all uptight.

Keep it up.

Edited by gotRICE?
Link to comment
https://www.sau.com.au/forums/topic/262343-avgas/#findComment-4496379
Share on other sites

HAHA, no im not stealing it.

i work in the aviation industry, thats all

and i know a bit bout the fuel,

it burns slower than 98 therefore increasing its detenation charateristics, and in turn it burns hotter, and killed my poor litle civic engine's valves

it doesnt make the exhaust go red but when running really rich i have seen it going 'sort of white' but mostly black

its got alot of lead in it, say the old leaded fuel for cars was like 0.05g of lead or something, avgas is about 6g (my numbers my be a little wrong) thats why they are trying to get rid of it just like in cars

it has a lower reid pressure, cant be bothered explaining, plus it doesnt matter if your running it in a car.

Link to comment
https://www.sau.com.au/forums/topic/262343-avgas/#findComment-4496670
Share on other sites

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


  • Latest Posts

    • So, this shouldn't be such a mission, but there were a few tricks so I thought I'd post up a DIY for it. This was on a Q50 Red Sport but I doubt any other V37 model is very different (maybe just less steps for the intake heat exchanger hoses) I pulled the radiator out to flush it because the car was running hot at the track, but obviously the same steps apply for changing a radiator for any reason including an upgrade. If you are removing the radiator, you of course need to drain and refill, so have 5+ litres of blue coolant ready. You don't need to drain the intake heat exchanger to remove the radiator but depending on your plans you may need a couple of litres for that as well. You will also need something to deal with the auto transmission lines, I used 2x 8mm rubber caps on the radiator side, and a short length of 8mm pipe on the car side.....unless you can block these lines quickly you will loose AT fluid and it may be enough to hurt the transmission if you don't refill it. Other than that....lets go... "First, jack up your car". Yes really, and put it safely on stands. If you are not confident doing that you need to give this job to a mechanic
    • If the forester is anything like our old 2007 GTB Liberty, I could near on run ling Long's and "rate them", as no matter what, it just hung to the road, even when abusing it in a hard launch in the wet, or throwing it at corners.
    • LOL, all of the CAI like Craig I just need to put a hole saw through my bumper Done and dusted, the car runs, which is nice, I'll take it for a spin when the weather clears up Just need to put the bumper back on for good
    • Brooooo Please send ABS control unit schematic Please! R33 gts25t ABS (Its two plug ecu, black and white) wire colors possible? [email protected]
    • Don't even try to run it on the stock ECU if you're going to have the boost controller bring boost above ~10 psi. I've already told you that. If you use the Nistune ECU, you will need to CAREFULLY read the available documentation for Neo tuning, and read some threads on the Nistune forums, to discover the various things you have to do to prevent the ECU from going bananas when the boost is too high. The is a table associated with th boost sensor that must be modified to prevent it from shitting the bed. This is just one of the things that you will need to do to the tune in Nistune, because the Neo turbo ECU will be expecting to see a number of things (such as the TCS) that are not there, and you have to block the DTCs on those. It is totally not surprising to me that you are having the problems that you are, but the solutions to these problems have been known for >15 years. So just get it done.
×
×
  • Create New...