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Topic: 93 gas? (Read 906 times) previous topic - next topic

93 gas?

ok so i put some 93 gas in with my 87, now its running like shiznit. is that why? i wanted to clean out the fuel system

93 gas?

Reply #1 –
Thats weird. I run 94 in mine every once in while and seems to do better. Got me.
85 Tbird 5.0
78 F150 351w
13 F150 4x4 3.5 Ecoboost

93 gas?

Reply #2 –
well, when i stomp on the gas, it sputters sometimes.

93 gas?

Reply #3 –
Higher octane fuel burns slower...slower flame front propagation, that's why the higher the compression ratio or with added timing, you'll need to run higher octane.  These cars were meant to run on 87...I ran 100 octane in my old 'Bird with the HO motor and 14* timing...like you described, ran like ....FWIW...I did NOT want to run 100 octane, but I made more passes that night than I thought and it didn't look like I was going to make it very far on what I had left in the tank.  HO motors will run okay on 93 and 94, but that's because they have more compression than the SO.

Hope that helps,
Don
Project 3G: Grandpa Grocery Getter-'85 Crown Vic LTD 2-door, 351W with heavily ported/polished GT40 heads, heavily ported/polished Typhoon Power Plus upper & lower intake, Comp Cams 265DEH retarded 1*, FAST EZ-EFI, HD T5, 8.8" 3.73 trac lock with extra clutches, 3G alt. swap, '99 CVPI front brakes, '09 CVPI rear disc brakes, '00 CVPI booster&m/c + wilwood adj prop valve.

Parted & Gone-'88 T-bird Sport, 351W swap, ported GT40 heads

93 gas?

Reply #4 –
thx :)

93 gas?

Reply #5 –
Could be bad gas too. Most of the places where gas is expensive is where I get the worse gas mileage. Also, around here, we get gas at Maverick gas stations at work, and they go through fuel pumps like no tomorrow. At least one or two every year.
Quote from: jcassity
I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
Hooligans! 
1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
1986 cougar.
lilsammywasapunkrocker@yahoo.com

93 gas?

Reply #6 –
I don't run less than 98.
Just because!
Old Grey Cat to this.88 Cat, 5.0 HO, CW mounts, mass air, CI custom cam, afr165's, Tmoss worked cobra intake, BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch, 8.8 373 TC trac loc, che ajustables with bullits on the rear. 11" brakes up front. +
 

93 gas?

Reply #7 –
93 is better cleaning fluid that 87?

93 gas?

Reply #8 –
If you want to clean it out, throw some sea foam in it. Or a little bit of alcohol.
Quote from: jcassity
I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
Hooligans! 
1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
1986 cougar.
lilsammywasapunkrocker@yahoo.com

93 gas?

Reply #9 –
Quote from: Haystack;247026
If you want to clean it out, throw some sea foam in it. Or a little bit of alcohol.




:drink: moonshine will cure anything...LMAO. I'd have to say water in fuel, there's 2 stations around here at the bottom of a hill, put in 93 octane truck hated it, went through it like water. however it loves the local shell 93. Wierd
'83 Cougar *the never ending project* warmed over 306 v8,c4,8.8 posi with 5 lug conversion
'91 mustang strictly street-in progress
'00 f150 7700-Mean Green: jet stage 1 chip,ported upper intake with 1" spacer,'04 Super Duty intake with injectors,summit racing short tube headers with true 2.5" duals with smithy's glasspacks!