Safe to run 115+ leaded in my car

I was wondering if it is safe for me to run this type of fuel at the track without adding unleaded. I have experience in using this stuff in a turbo buick and it blows out the O2 sensor pretty quick. Is there anything else that may happen if I use this fuel, The last time I was at the track I put 1 Gallon of 117 leaded and 3 gallons of 110 unleaded and it worked real well.

what's your C/R ?

I think there's a reason our cars say Unleaded Fuel Only... unless yours says otherwise, if you have to ask, it's probably not good for the engine.

"what's your C/R ?"

my C/R is 9.0:1

you would lose power trying to run that high of an octan fuel with only 9.0:1 even if you are using forced induction , the car might not even run with that stuff

I thought the point of runnig that high octance was to resist dentonation (corect me if I am wrong)and allow you to run higher boost w/o dentionation. I have a buick GNX that I raced a couple of times and I believe that it has a 8.5:1 C/R and that car loved the leaded high octane

you would lose power trying to run that high of an octan fuel with only 9.0:1 even if you are using forced induction , the car might not even run with that stuff

Lay off the crack son.

Dumping in some C16 will do wonders for performance provided you bump up the timing and boost, as long as you arnt running a cat. Yes, it will kill your oxygen sensors over time, but those are fairly cheap to replace and it's not a big deal.

Yes, it will kill your oxygen sensors over time, but those are fairly cheap to replace and it's not a big deal.


Cheap?? Where do you get your O2 sensors?? theyre like a 100 bucks!

O2 sensors are expensive. Leaded fuel is bad for them, and your catalytic converter. Just run 94, your car will still have about the same power.

what kind of boost are you running cuz if you arent boosting then you are doing less good with that high octane then you would with pump gas the higher the octane the slower the burn and the cooler the burn but too slow a burn means you arent burning it all on the combustion stroke which means a waste of energy but if you are running like 20 lbs of boost then you are in the right with the 114 there is no reason for you to run leaded fuel if you have detonation on 114 then you should just go up the ladder to alcohol

My car can run over 18 lb, but I dare not w/o an ECU or an ignition & bigger injectors. Im kinda slapping myself for not getting bigger injectors in the first place. Anybody think 650 cc would be overkill if I got an good ignition system and an ECU?

Cheap?? Where do you get your O2 sensors?? theyre like a 100 bucks!
www.oxygensensors.com

$189 for an Si one, $60 for a dx/lx/ex etc one..

All of them have the optional universal Walker ones for $60, except the VX which uses a wideband, ubt instead of the NTK, you can use a Bosch that is only about $70.

How much leaded gas does it take to foul a sensor? I've never really tried..

9.0 to one and your running that fuel?
your car would run on 50 octane.
your computer compensates for your octane anyway so you would be wasting your money and your time shithead

9.0 to one and your running that fuel?
your car would run on 50 octane.
your computer compensates for your octane anyway so you would be wasting your money and your time shithead
Jesus, don't they teach reading in fucking schools anymore? Pay special attention to the words in bold...

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1996 GSR w/ 1995 OBD-1 B18C1. LS Tranny w/ Quaife LSD,T3/T4 AR .50 w/ HKS Wastegate,RC 440 cc Injectors,Had Throttlebody,Skunk2 Intake Manifold,Sleeved and Decked Bottom End w/ Internals,Stock Head & Internals,AEM Cam Gears,Thermal 3" Exhaust w/ no Cat,AEM Fuel Rail,Upgraded Fuel Pump, Apexi S-AFC,GReddy Intercooler,Blow-off Valve & Profec-B,Ground Control, Black Flake Paint,Tint,AEM pullies
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And your fucking ECU doesn't compensate for octane you shithead, it retards your timing when it detects detonation.

Jesus, don't they teach reading in fucking schools anymore? Pay special attention to the words in bold...

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1996 GSR w/ 1995 OBD-1 B18C1. LS Tranny w/ Quaife LSD,T3/T4 AR .50 w/ HKS Wastegate,RC 440 cc Injectors,Had Throttlebody,Skunk2 Intake Manifold,Sleeved and Decked Bottom End w/ Internals,Stock Head & Internals,AEM Cam Gears,Thermal 3" Exhaust w/ no Cat,AEM Fuel Rail,Upgraded Fuel Pump, Apexi S-AFC,GReddy Intercooler,Blow-off Valve & Profec-B,Ground Control, Black Flake Paint,Tint,AEM pullies
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And your fucking ECU doesn't compensate for octane you shithead, it retards your timing when it detects detonation.

Hey, watch your mouth there, armyboy.
And who do you think you are, an english teacher?

Hey, watch your mouth there, armyboy.
And who do you think you are, an english teacher?
You haven't choked to death on semen yet? damn.

You haven't choked to death on semen yet? damn.



Would you like some semen?

don't worry he gets enough semen shot at him

don't worry he gets enough semen shot at him

Should I be surprised? Must be an Army thing.

if you really want to bust his balls tell him semen is spelled with an i

if you really want to bust his balls tell him semen is spelled with an i
Hahahaha illiteracy truely has taken a hold of you.

wtf just happened here?

wtf just happened here?

There are an abundant amount of newb idoits on this board. Use some common f-in sense, who the fuck would want to run 115 octance on a NA 9:1 motor? If you are boosting 18psi, your motor will thank you for running high octane leaded by not blowing the fuck up. Yes universal o2 sensors are fairly cheap, and if you can't afford paying $60-$100 to replace it every now and then, then you should find a new hobby or run less boost. The downpipe I made for my racecar has the o2 sensor bung right up top where it can be accessed from above, that way it is a 3 minuite job to change it. High octance fuel is going to greatly reduce your chance of detonation, shit I don't plan to run any but it, but then I again it will be slightly different from your average street build.

Also, what is your guys problem with the Army? Do you not enjoy your freedom, or does it take more than an 15 mentality to understand that freedom isn't exactly free. This dude risks his life to protect your way of life, so maybe you should just shut the fuck up.

Hey Maxspeed, how often do you end up having to change the o2? That's pretty close to the ports, I'd think you be going through them fairly quick.

Hey Maxspeed, how often do you end up having to change the o2? That's pretty close to the ports, I'd think you be going through them fairly quick.

I couldn't tell you firsthand, the car isn't even running yet, waiting to pick up my block next weekend. Typically from what I have seen, about every 20-30 or so passes which I believe is acceptable on a racecar. I ran leaded several times on my old setup, and I still have the same o2 thats been in there about 2.5 years.

Cool, I was going to run my wideband in place of my OE o2, ut decided to weld another bung in and only run it to tune, save some life on it.

I used to get about 15 passes out of the O2 in my other car before it was fouled. Off topic question, how come those people got banned? Was It for cussing?

I used to get about 15 passes out of the O2 in my other car before it was fouled. Off topic question, how come those people got banned? Was It for cussing?
I'm sure thats part of the reason. It could have also been that they were morons that had nothing useful to contribute.

Off topic question, how come those people got banned? Was It for cussing?
Pretty much because their sole purpose on the board was to annoy people and start shit.

maxspeedhonda: not to get off topic

what kind of ignition ore you running.

I am looking at either the MSD 6ALN or SCI...which do you think is better?

maxspeedhonda: not to get off topic

what kind of ignition ore you running.

I am looking at either the MSD 6ALN or SCI...which do you think is better?
I ran the 6AL with the BTM. For the new setup, I am giong to reuse the 6AL eliminate the BTM, and run hondata to control spark.

I would stay away from the SCI, you would be better off with one of the 6 series or even the digital ignition.

Heard anything good about the AEM C2DI...pretty cheap price...any good

Heard anything good about the AEM C2DI...pretty cheap price...any good

Nah, havn't heard anything about it.

you dont need to run higher octane then what yoru motor needs, like c16 on a stock engine is a waste and will hurt performance. you motor will need to be built enough to making enough hp to need that high of an octane