Brian

I like riding in drift cars t hat run on race gas. 100/103/110 whatever...

Well, those guys all have SRs and high power stuff.
I have a stock KA.


Is it ok to run a high octane gasoline like that in my car?

I mostly want to do it for the smell. I like the aroma that comes off these cars.


So, any negatives to running a high octane gas like these?

waynehead05

I have a feeling you're joking... but I want to ask anyway,

are you being serious or just playing?

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I10cruiser

i think ernie ran 110 or one of the dtc guys and i think might of blown there kae after a while. . high octane=win

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Brian

I'm pretty serious.

I don't think I'd want to run LEADED, right?
Unleaded only. I still have the cat in my car.

I don't want to use this gas everyday, but just put some in when I go to the track...

LongGrain

a stock KA will not burn 100 octane efficiently

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Brian

Yeah, I've heard that, but will my car run WORSE than if I put 91 or something in there?

Will that 100+ octane ruin my engine somehow?

vvtisupra

100 octane will run worse. are you going for the scented race gas smell ? Like lavender or bubble gum? Cuz if thats the case you can just buy the additive and put it in your normal gas. Technically the lower the octane you can go without detonation is the best.

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Brian

I see....

Ok, I guess I won't run 100+ then.
I don't want to make my car run WORSE just for the good smell.

Maybe I could just spill a little around the car or something... give it a hint of race gas smell...

racepar1

It will run less efficiently and you will lose a bit of power. You don't want to run any more octane than what is absolutely necessary. Higher octane = higher resistance to combustion = burns less efficiently = less power. I don't think it will permanently damage your engine though.

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S14DB

You will be fine running any Unleaded Race Gas in your car. Leaded will kill your O2 sensor, Cat and leave deposits all over the spark plugs and the back of your valves.

Negatives is that it burns slower then lower grades. May not get complete combustion and lower your MPG. If you run colder plugs then stock check them after the first time. May need a hotter set for race gas. These are all minor things.

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LongGrain

soak a rag or something in it and keep it in the car as an air freshener when you go to the track

but i would not recommend using it, ESPECIALLY if you have a cat.

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Brian

Yeah, looks like I won't be using it.

I have no desire to change things around. Putting gas into the gas tank is the most amount of work I want to do.

And, seeing as I have a stock engine, I don't want to LOSE ANY power.

Thanks guys.

usdm180sx

It's like $8/gallon at the 76 station in Fullerton

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McRussellPants

Put in Racegas
advance timing all the way
?????
profit

Brian

Lol lol

Advance timing? I have no idea how to do that.

S14DB

Just mix like 5galons of 100R and a full tank. Will give you the smell and only raise the Octane 3~4 points.

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driftking777

if you want a cool smell you could always run something like this

Manhattan Oil 19769-32 - Manhattan Oil Fuel Fragrances - summitracing.com

comes in grape and cherry

13 bucks will do 2 tanks of gas. and this shit is strong. we run it in our pressure washer...lol

S14DB

"Fragrance levels will be reduced on vehicles equipped with catalytic converters."

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Brian

I don't want fruity gasoline.

yuck.

LongGrain

wow really? around here this summer race gas was like 5.50

but that was when normal gas was like 4.xx so its probably even cheaper now.

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VQMaxFan

+1

I dont think you even need high of a mix ratio to get the smell.

projectRDM

Ya, the times I've ran 103 I just mix it, 3-4 gallons per tank, bump the timing a degree and go. Doesn't feel any faster but it smells nice.

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slider2828

There is permanent damage because at high end you will not have complete burn. Overtime that will cause some damage to the pistons and rings as it will seep through your rings into your oil and that destroys the lubrication properties of oil.....

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S14DB

It's not going to wash down running higher octane. That's only if he had a extremely rich AFR no matter what the octane.

It will just burn slower then a lower octane. As long as the AFR is good he will get a complete burn. It will just be later then normal. You won't get as much power. Why it was suggested he advance his timing.

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slider2828

Hmmm that is true....

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sillyvia13

SOUNDS LIKE A PLAN!!!!!

BRAIN I AM SEND A FUCKING ECU! to you...
gimmie your address NOW!

If you like it send me your ecu and $50!
You gotta see the power from these...
pm me well talk... you need more than that na ka oem ecu can do...
hit me

s0apgun

so you're saying

if i put 93 octane in my stock ka i'm actually losing power..

so putting 87 in my tank is actually better

some one hit me with some knowledge

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Def

This thread is full of fail.


Combustion rate is NOT directly related to octane rating of a fuel. There is some race gas that has a faster combustion rate than normal pump gas, and some that has a slower combustion rate of the gas. VP Import stuff in particular touts its higher combustion rate to enable a small increase in power at very high RPM(<8000 RPM).

racepar1

Ka's are supposed to run on 91 octane, that is what you should run. I get a bit of pinging in hot weather from 87 octane, so I stick with 91. I doubt you will lose anything with 93 octane, but with 110 octane you probably will.

In all cases, no. Generally speaking though higher octane means slower combustion. You can get race gas that will burn as fast or faster then pump gas, but most race fuels don't. What higher octane really means is a higher resistance to combustion. It takes higher cylinder pressures and/or temperatures to burn higher octane fuels efficiently then it does to burn pump gas efficiently.

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Def

Absolutely 100% incorrect on all counts. Burn kinetics at the same octane rating, but with a fuel made of up different compounds(more aromatics, more TEL, etc.), will be vastly different.

Tuning cars on different fuels, and learning a few things about combustion engineer makes this readily apparent.