What Octane will the SS be rated?

[LSxJunkie]

Originally Posted by zforce

Octane rating is the amount of lubrication in the gas. The higher the octane rating the more lubiraction in the cumbustion chamber via the gasoline so the car can be tuned for more advanced from TDC, thus allowing the engine to run harder. the reason high compresion engines need higher octane is for the closer tolerance between parts. An old trick in making an engine run better at higher rpm was to advance the timing on an engine but the draw back was engine knocking and a hard engine to start so the trick was to adbance the timing enough to get good high rpm performance but still be able to start the car and avoid knocking when you turn the car off or at idling. The higher octane allowed us to advance the timing and not get knocking when the car was turned off. Now these days, the timing advancement is managed by the on board computer but the programming is dependant on the higher octane to protect the engine parts from knocking into each other.

I don't know where you got that from, but octane is not a lubrication rating, knock isn't "engine parts knocking into each other", and cars certainly don't knock when you turn them off.

Knock is undesired ignition, dead stop. Heat and pressure cause ignition, and higher octane ratings signify higher thresholds of ignition.



It sounds like you know about a quarter of what you're talking about, and the rest you just kinda filled in the blanks.

[headpunter]

Originally Posted by zforce

Octane rating is the amount of lubrication in the gas. The higher the octane rating the more lubiraction in the cumbustion chamber via the gasoline so the car can be tuned for more advanced from TDC, thus allowing the engine to run harder. the reason high compresion engines need higher octane is for the closer tolerance between parts. An old trick in making an engine run better at higher rpm was to advance the timing on an engine but the draw back was engine knocking and a hard engine to start so the trick was to adbance the timing enough to get good high rpm performance but still be able to start the car and avoid knocking when you turn the car off or at idling. The higher octane allowed us to advance the timing and not get knocking when the car was turned off. Now these days, the timing advancement is managed by the on board computer but the programming is dependant on the higher octane to protect the engine parts from knocking into each other.

dear god i hope you are not serious.

[TainoWarrior316]

Okay this might come off as rude but I live in America so yeah whatever. Um anyway If you buy a $32,000+ Performance vehicle (your not buying a camaro to drop your kids off at school or just to make it to work) and your thinking about putting anything less than premium I think you should probly go buy a nice chrysler van or something instead. If you buy the ls3 or l99 do your camaro some justice and give that baby the best in life i mean damn you only live once! dont you?

[TainoWarrior316]

You don't take your kid to Barny's Burgers around the corner you take them to McDonald's! (that was a metaphor) I think im gonna start a petition that will only allow people to put premium in their Camaro's! WHO'S WITH ME?!

THIS IS FOR SPARTA!!! uh i mean THIS IS FOR GM!!!!

[LSxJunkie]

Originally Posted by TainoWarrior316

Okay this might come off as rude but I live in America so yeah whatever. Um anyway If you buy a $32,000+ Performance vehicle (your not buying a camaro to drop your kids off at school or just to make it to work) and your thinking about putting anything less than premium I think you should probly go buy a nice chrysler van or something instead. If you buy the ls3 or l99 do your camaro some justice and give that baby the best in life i mean damn you only live once! dont you?

Slow your role there, Hammer. There are more expensive cars than the Camaro that run lower octane ratings. Put whatever's recommended in the car. No more, no less. I wouldn't waste my money on putting 93 in a car that purr like a kitten on 87.

[TainoWarrior316]

Originally Posted by LSxJunkie

Slow your role there, Hammer. There are more expensive cars than the Camaro that run lower octane ratings. Put whatever's recommended in the car. No more, no less. I wouldn't waste my money on putting 93 in a car that purr like a kitten on 87.

I just said what you just said. huh! lol You said what I just said and im saying the same thing you just said just in different words. Sorry thats confusing but What I said was HEY you bought a PERFORMANCE ENGINE and PREMIUM walks hand in hand with Performance so for somebody to be asking about whether or not they should put anything less than premium in a motor they are buying for Performance reasons just didnt make much sense to me.

[camaro5]

Any LS3 can use regular, but premium is recommended.

They have ping (detonation) sensors that retard the ignition advance for lower octane fuel.

However, the engine makes less power with low octane, and it has been shown to be cost effective to use premium due to the increased fuel mileage that results.

Not to mention, it feels better when you step on it.

[josh1147]

and to the guy with the Hemi....hmmmmm....ever think that is your problem?


(haha, just joking)

[Jamestwilliams]

Originally Posted by zforce

Octane rating is the amount of lubrication in the gas. The higher the octane rating the more lubiraction in the cumbustion chamber via the gasoline so the car can be tuned for more advanced from TDC, thus allowing the engine to run harder. the reason high compresion engines need higher octane is for the closer tolerance between parts. An old trick in making an engine run better at higher rpm was to advance the timing on an engine but the draw back was engine knocking and a hard engine to start so the trick was to adbance the timing enough to get good high rpm performance but still be able to start the car and avoid knocking when you turn the car off or at idling. The higher octane allowed us to advance the timing and not get knocking when the car was turned off. Now these days, the timing advancement is managed by the on board computer but the programming is dependant on the higher octane to protect the engine parts from knocking into each other.

I think I know where you became confused, octane is a measure of combustion (I certainly don't know enough of chemistry to do this justice) the lower the octane rating the easier it is for the fuel to ignite, less compression before it explodes. In the old days gas had higher octane rating and also contained lead, lead of course acted as a lubricant, that could be where you got mixed up and thought that higher octane = more lubrication. When in actual fact it's the lead content that produced lubrication.

[wjones14]

When my daughter bought her 2003 Mini Cooper, I didn't realize that 91 Octane was recommended until we read the owner's manual. I emailed Mini, asking if it would hurt it to run 87, and their reply was:

"MINI Division requires the use of premium fuel (91 AKI) only if you want to duplicate the official EPA certified emissions and fuel economy. However, if you choose to use less then 91 AKI (it is not recommended to use below 87 AKI), it will not harm the engine. It is important to note that there will be a reduction in fuel economy and performance and emissions will increase."

So, with a reduction in fuel economy, it might cost nearly the same in the end to use 87 or 91 - so if that's true, it's pretty much a no-brainer to use 91.

[Foster26]

In the middle of all this arguing, I just want to let eveyone know that gas is $1.73 in Lawton, Oklahoma!

[ZYAL8R]

I bought it for $1.60 a gallon this week in Ft.Smith, AR. Kinda makes me want to go out and burn some of it up for the helluvit just so I can brag some more about buying it "dirt cheap".LOL

[Inspector 17]

$1.69 here in VA. Keep going down baby!

[Foster26]

$1.55 in OKC. We have the cheapest gas in the country!