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#21 |
Mizzou Tigers
Join Date: Apr 1999
Location: weston, MO United States
Posts: 1,455
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![]() You can always find him over at theRiceHatersClub .
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2006 Mustang GT 1990 LX GT-40 motor 262 horsepower, 307ft-lbs (sold but forever loved) 1998 Contour SVT Rice Haters Club Member #244 |
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#22 | ||
T.P.M. President
Join Date: May 2002
Location: Brownsville
Posts: 265
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![]() Quote:
I'm no expert here...probably far from it, but I am looking at something from this excerpt which I took from the link provided. Quote:
If you advance your timing (tuning) to the point of detonation, your are creating a unstable environment that the high flammability of 87 can not control, but by simply using a higher octane level, you can remain tuned at the higher advanced timing because the higher octane can stabiulize the fule to burn at a more controlled rate. So the million dollar question is, what is the timing advance that will provide the best performance, and what octane do you need to run that timing without having a meltdown.
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#23 |
Mizzou Tigers
Join Date: Apr 1999
Location: weston, MO United States
Posts: 1,455
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![]() Falcons Talon - You are correct in what you are saying. I was more referring to 88fivepointoh's post:
On any High Performance motor, 93 octane is best, you won't always here the detonation, but it doesn't mean its not happening.. If you move up time from stock, 93 is best. As you pointed out, this statement is true only if you are tuned to run with 93 octane. To just say "if you move time up from stock, 93 is best" is not sound advice. Depending on your set up, altitude, etc., you may be able to run 89 or even 87 octane depending on how far advanced you are. If you do advance to the point of having detonation occur, try running 89. Just because you have played with the timing does not mean you need to run out and start pumping 93 octane into your ride. Also, don't just assume that you are tuned for 87 octane at only 10°. That is just a very safe factory setting and many cars can bump up their timing a few degrees and still run 87. To respond to titanium92's original question, I would say on a basically stock mustang to advance the timing as much as possible while still being able to run 87 octane. IMO, the performance gains on a stock vehicle will be minimal when advancing the timing far enough to warrant running high octane fuels. To me the added cost of the fuel wouldn't justtify the 3 or 4 more HP you might squeeze out of the car.
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2006 Mustang GT 1990 LX GT-40 motor 262 horsepower, 307ft-lbs (sold but forever loved) 1998 Contour SVT Rice Haters Club Member #244 |
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#24 |
Registered Member
Join Date: Aug 2002
Location: Rochester
Posts: 553
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![]() Well IMO, i have seen engines smoke head gaskets, and pistons from silent detination.. i have seen it visible on dyno runs and it was told to me by Augustino Racing In Canada that once timing is advanced, a higher grade of fuel is best. These cars were designed in a time where fuel was richer at the pumps and todays fuel sucks.. That is my .02cents on this discussion.
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#25 | |
Mizzou Tigers
Join Date: Apr 1999
Location: weston, MO United States
Posts: 1,455
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__________________
2006 Mustang GT 1990 LX GT-40 motor 262 horsepower, 307ft-lbs (sold but forever loved) 1998 Contour SVT Rice Haters Club Member #244 |
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#26 |
Registered Member
Join Date: Jul 2004
Posts: 38
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![]() Hey great feed back guys.......I'm still up in the air if I should adjust the timing though....everyone seems to be making good points.....aahhh...lol. Too good of points so now i'm more confused....lol.
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#27 |
Registered Member
Join Date: Aug 2002
Location: Rochester
Posts: 553
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![]() I think we all agree to bump up your timing.. its just the fuel rating we all have different opinions of..
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#28 | |
Mizzou Tigers
Join Date: Apr 1999
Location: weston, MO United States
Posts: 1,455
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__________________
2006 Mustang GT 1990 LX GT-40 motor 262 horsepower, 307ft-lbs (sold but forever loved) 1998 Contour SVT Rice Haters Club Member #244 |
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#29 | |
Gimme a Drink!
Join Date: Dec 2002
Location: NYC
Posts: 694
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1990 GT,stock T-5,K&N w/o air silencer,March underdrives,FMS wires,timing@14*,PA Perf 130amp alt,Steeda Tri-Ax Shifter,Steeda adj quadrant/clutch cable/firewall adj,Centerforce II clutch,o/r x-pipe,Magnaflow SS catback,g-load brace, subframes,Bilstein struts/shocks,Autometer gauges, 136k and running strong! |
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