Race Gas...

[Fishey]

ROFL at this thread...

I just find it to be absolutely funny..

1. Octane has nothing at all to do with the amount of energy the gas has just its ability to resist detonation.

2. There is a different rating for the actual power output per amount of gasoline and its called Specific Energy.

3. Different fuels all have slightly different Specific Energy, Octane ratings and even specific Gravity ratings.

4. Pump gas will very from brand to brand as well as from pump to pump.

5. Pump gas isn't as pure or clean as Race gas (in drums) pumped "high octane" gas still has the same issues as regular pump gas as far as its cleanness. It also doesn't have very good consistency from pump to pump on octane ratings as there are many things that will effect it in transport and in the storage tanks.

6. The reason of consistency is why race gas is appealing to me over pump fuels.

P.S. Please don't make me read any more of this retarded talk ever again. Since you guys don't even understand Octane and Specific Energy I don't see the point in talking about the effects of Oxygenated fuels/Leaded Fuels and fuel mixing (like Meth Injection).

[zazzn]

Ok you are right. My IPD chip in the S60 must not be a 110 tune. It is only lightly modded but I really did not see any reason to run 110. And my 850, which has run several 12 second 1/4s, must lso be under 300hp. I am really just basing my Volvo insight on the 5 Volvos I owned in the last 10 years which are all pretty much stock.

I don't know if you are trying to be a smart jerk, so i'll just move on. What I will say is you should read my last post again.

"Seeing that I had no fuel management on my s70 (btw i'm not talking 850 turbo here talking about 16t) I think it's very possible to get **close** to 300WHP" and what I mean by that is I DO believe it's possible to hit 300WHP on a stock s70 T5 turbo (td04 16T).

ROFL at this thread...

I just find it to be absolutely funny..

1. Octane has nothing at all to do with the amount of energy the gas has just its ability to resist detonation.

2. There is a different rating for the actual power output per amount of gasoline and its called Specific Energy.

3. Different fuels all have slightly different Specific Energy, Octane ratings and even specific Gravity ratings.

4. Pump gas will very from brand to brand as well as from pump to pump.

5. Pump gas isn't as pure or clean as Race gas (in drums) pumped "high octane" gas still has the same issues as regular pump gas as far as its cleanness. It also doesn't have very good consistency from pump to pump on octane ratings as there are many things that will effect it in transport and in the storage tanks.

6. The reason of consistency is why race gas is appealing to me over pump fuels.

P.S. Please don't make me read any more of this retarded talk ever again. Since you guys don't even understand Octane and Specific Energy I don't see the point in talking about the effects of Oxygenated fuels/Leaded Fuels and fuel mixing (like Meth Injection).

If i'm included in "you guys" here's my reply.

#1 I never said a specific grade of fuel would make more power I said it would resist detonation, which will allow for hotter air charges (more boost) higher timing ect which WILL give more power.

#2 Ok, who’s arguing this?

#3 Yes as they also have diff additives

#4 Just as juice will taste different from company to company and batch to batch

#5 This is why you should try to fill up at modern stations and not old mom and pop shops so you know the storage tanks are well maintained.

#6 Ok. You go!

So going back to the original topic Higher octane fuel with high boost on the stock turbo will make more power. Actually let me rephrase that... ALLOW you to make more power.

[SkyWriter]

my car runs on hype(rbola).

[Fishey]

I don't know if you are trying to be a smart jerk, so i'll just move on. What I will say is you should read my last post again.

"Seeing that I had no fuel management on my s70 (btw i'm not talking 850 turbo here talking about 16t) I think it's very possible to get **close** to 300WHP" and what I mean by that is I DO believe it's possible to hit 300WHP on a stock s70 T5 turbo (td04 16T).

If i'm included in "you guys" here's my reply.

#1 I never said a specific grade of fuel would make more power I said it would resist detonation, which will allow for hotter air charges (more boost) higher timing ect which WILL give more power.

#2 Ok, who’s arguing this?

#3 Yes as they also have diff additives

#4 Just as juice will taste different from company to company and batch to batch

#5 This is why you should try to fill up at modern stations and not old mom and pop shops so you know the storage tanks are well maintained.

#6 Ok. You go!

So going back to the original topic Higher octane fuel with high boost on the stock turbo will make more power. Actually let me rephrase that... ALLOW you to make more power.

1. If your fuel has no specific energy even if its 30000oct you will never make any power..

2.

Excess octane results in less mileage and HP but whatever

So in theory, if you have no external variables such as temperature change, altitude change etc.. you would want to be at the lowest octane before seeing any pre-ignition?

and more but whats the point of quoting the entire thread?

3. Additives? I am pretty sure the difference in alot of fuels is beyond "additives" but actually the chemical base.

4. Drinking a bad tasting juice doesn't cost you an engine. Fuel that is poor (You do know alot of times 93oct really is not that high right? Some states are horrible about there checking of fuel quality and you better bet that capitalism takes its course) can cause you to blow your motor.

5. Actually, there is alot more to it then just the tanks. I mean for instance do you know how dirty the gas is if you fill up when a tanker is dumping there fuel? The sediment at the bottom of the tank is washed up and guess where it goes!..

6.I do...

Also, on a side note..

The maximum power output of a 15g or 16T on the volvo motor will never require more then 93octane for its boost output only your timing advance or your stupidity of running your turbos way outside effective range causeing accessive heat and killing them at the same time. I have never found a reason to run race gas unless you are going over the limits of Pump+Secondary Fuel (example Pump+Methanol)

[zazzn]

1. If your fuel has no specific energy even if its 30000oct you will never make any power..

2.

and more but whats the point of quoting the entire thread?

3. Additives? I am pretty sure the difference in alot of fuels is beyond "additives" but actually the chemical base.

4. Drinking a bad tasting juice doesn't cost you an engine. Fuel that is poor (You do know alot of times 93oct really is not that high right? Some states are horrible about there checking of fuel quality and you better bet that capitalism takes its course) can cause you to blow your motor.

5. Actually, there is alot more to it then just the tanks. I mean for instance do you know how dirty the gas is if you fill up when a tanker is dumping there fuel? The sediment at the bottom of the tank is washed up and guess where it goes!..

6.I do...

Also, on a side note..

The maximum power output of a 15g or 16T on the volvo motor will never require more then 93octane for its boost output only your timing advance or your stupidity of running your turbos way outside effective range causeing accessive heat and killing them at the same time. I have never found a reason to run race gas unless you are going over the limits of Pump+Secondary Fuel (example Pump+Methanol)

Which is why liquids which are harder to burn have higher octane ratings. IE ATF, motor oil, alky.

Again i said nothing about making more power on race fuel only.

I heard the same I'm dumb rhetoric 5 years ago from mk3 supra owners who said the stock turbo was blowing hot air at 13 PSI.

When you FINALLY have the balls to admit what I am saying is right this tread will be over.

As for ANY mechanical part the harder you run it the less reliability you should expect, and I think that everyone excepts that here who turns up their boost.

You say my stupidity yes you consistently change the subject and stray from the truth.

So lets recap.

YOU WILL MAKE MORE POWER WITH MORE BOOST ON THE STOCK TURBO, YOU WILL NEED MORE OCTANE TO STOP THE DETONATION.

Stop bringing up excuses why you shouldn't do it NO one is asking that question and that’s NOT the question I’m answering.

As for fuel pump contamination I have had my supra for 6 years, it's been driven for 20 and when I pulled my tank to change the pumps the filters where dead clean the way you make the industry sound you act as if our cars should be blowing up daily.

Now I'll ask YOU to prove where you get the data from contamination.

Your welcome.

[Che'_Moderator]

YOU WILL MAKE MORE POWER WITH MORE BOOST ON THE STOCK TURBO, YOU WILL NEED MORE OCTANE TO STOP THE DETONATION.

Argument was not about more octane with more boost it was just about more boost. Maybe I am wrong but I am pretty sure upping to 14psi from the 10psi stock level makes more HP with no extra octane

My point was assuming a 9:1 compression engine at 4K RPM no forced induction. Tune it however you want you will make more HP on lower octane all other variables being equal. Do what you want, but personally I always build the engine then tune for the lowest octane I can. If you want to run Maximal in your Geo Metro knock your self out

[DARKSIDE]

Yup...

I think you should tune the car for a decent/low octane rating...that way, if you decide to up the boost/incease the tune(thereby increasing the chances of detonation), you can then use a higher octane rating to further prevent detonation.

just my.02...

[Che'_Moderator]

Yup...

I think you should tune the car for a decent/low octane rating...that way, if you decide to up the boost/incease the tune(thereby increasing the chances of detonation), you can then use a higher octane rating to further prevent detonation.

just my.02...

If you tune for 10 psi and 87 octane you are going to have to retune if you up either the boost or the octane.

[DARKSIDE]

If you tune for 10 psi and 87 octane you are going to have to retune if you up either the boost or the octane.

but then, upping the octane should hurt if it better prevents detonation at the higher octane levels, right...

[Che'_Moderator]

but then, upping the octane should hurt if it better prevents detonation at the higher octane levels, right...

It will hurt performance.

[Fudge_Brownie]

Chuck you don't understand. If you put rocket fuel in these cars, I'll gain 100whp. Get with the program.

[zazzn]

Argument was not about more octane with more boost it was just about more boost. Maybe I am wrong but I am pretty sure upping to 14psi from the 10psi stock level makes more HP with no extra octane

My point was assuming a 9:1 compression engine at 4K RPM no forced induction. Tune it however you want you will make more HP on lower octane all other variables being equal. Do what you want, but personally I always build the engine then tune for the lowest octane I can. If you want to run Maximal in your Geo Metro knock your self out

But the agument was about more octane as the original answer was will he get more power with race fuel over 94. I said yes probably if he's running a chip thats running high boost 18-20.

Who's running or even talking about a volvo at 9:1 compression at 4 k with no forced induction though... No one cares about NA an NA 2.5 can go into the trash.

Tuning a boosted car on 87 is the stupidest thing i've heard of, especially whent he factory tune requires 91. Moreover, the way you make it seem you act like 87 octane will give you stupid amounts of power if you gain 5 HP over 94 (being generous) i'd rather take the 65 WHP you gain by turning up the boost to 8 PSI and not detonating form the 94. BTW my "geo metro" toyota supra and toyota aristo are running great and make HP that puts smiles on my face... Hell even the volvo with 250 WHP puts a smile on my face thanks.

Yup...

I think you should tune the car for a decent/low octane rating...that way, if you decide to up the boost/incease the tune(thereby increasing the chances of detonation), you can then use a higher octane rating to further prevent detonation.

just my.02...

Please stop.

What you do is tune for high octane fuel and always run high octane fuel but you may LOWER the boost for the times you dont need it so that when you turn up the boost you don't blow up the engine.