Running performance alternate fuel?

[wyomingste]

I'm currently thinking of ordering some other fuels to try in my car.

 

A few that come to my mind are the following;

 

Motorsport 109:

Color:clear

Motor Octane 101

R+M/2=105

Research octane 109

Oxygenating-Yes

Specific Gravity- .722 @ 60*F

 

Motorsport 103;

Color:Red

Motor Octane:99

R+M/2=103

Oxygenating-Yes

Specific Gravity- .743 @ 60*F

 

What does everyone think these fuels would do in our cars? They are both unleaded gasolines and I think that they may actually make a performance increase in our motors.

 

Thanks for the help,

Wyoming STE

[White93z34]

on a stock anything that we have, i'd say at best you might notice a little extra spunk, if anything, but not enough to make it worthwhile.

[digitaloutsider]

I highly doubt they'd do much of anything on a stock motor. Your compression isn't NEAR high enough. Remember: octane is a fuel's resistance to burn. I'd be suprised if 109 octane ran right in a 3.1 at all.

[19Cutlass94]

If anything at all, the higher octane fuel *might* clean it out a wee bit. Since the higher octane also burns hotter

[wyomingste]

Would anyone think there would be a performance gain, and if not i wouldn't really loose anything because it could clean the motor out correct?

 

I'm just wondering because I've used the motorsport 109 in my old dodge (carbureted 318 stroked to 396 but the compression ratio was only 9.8:1) I still noticed some horsepower gains (It would regularly spin the tires to the top of 3rd gear but when it hit 4th they would grip on pump gas, when I was running the 109 and C10 (leaded gasoline) in it I could spin to the top end of 4th gear, but I would notice extremly large gains of torque and horsepower at least, though I never had the motor on the dyno on the other gasses it had 492 horsepower at 3700RPM and 563 ft/lbs of torque at 2400RPM on 91 octane (I was running 38/15/R16.5 tires with a spool in both the rear and front end, sucked driving it on the street but it loved the mud).

 

Thanks,

WyomingSTE

[Crazy K]

our engines use the knock sensor to retard timing.... and higher octane gas means less retarding required.... but at some point no matter how high the octane is you put in is... the engine won't advance the spark timing any further... I think you would be wasting money personally...

[jeremy]

total waste of $, IMHO of course

[19Cutlass94]

In other words, just use 87 or 89 octane or whatever your gas station has thats the cheapest.

[pitzel]

In Wyoming? If anything, because of altitude, you need less octane than you would need at sea level, not more.

[z284pwr]

Its a waste....

 

It may actually hurt performance....

 

Do you even know what higher octane fuel does? It has nothing to do with performance actually.....higher octane just burns SLOWER and less resistant to burning, so in other words, it won't detonate as much, so unless you are running ass loads of boost or nitrous or forced induction, or compression ratio thru the roof it won't be needed. Oh and they probably have lead in them, which is BAD BAD for the O2 and Cat. It will destroy them both. Save your money

[GP1138]

Use what your owners manual says to use... anything else is a waste.

[OldSkoolGP]

The only way you get the advantage of using high octane gas is if you can tune your computer ot take advantage of it by advancing timing.