The majority of california only has 91 octane. 
No 93 Octane
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TECH Apprentice
Joined: Feb 2002
Posts: 364
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From: Chicago; South Side
No 93 Octane Listening to the nightly news, there was an article suggesting that 93 octane fuel may not be available due to the hurricance. Given the extreme circumstances I'll never complain. Can we run on 92 octane with little performance loss. What if you running heads and cam?
I run the junk 91 california gas with a bottle of octane booster in my car to keep it from pinging. On the east coast I was able to run straight 93 octane without issue.
Theres a guy near me that has a 95 Trans Am that only uses regular 87 octane... seems to run fine for him, but I would NEVER do that in an LT1/Ls1... or any high performance vehicle for that matter.
The engineers who design an engine to run on premium gas use 91 as their number because it's the lowest "premium" out there. When my car was running lean (14.5/1) with the first tune, I only noticed slight pinging off and on at 4500 rpm. I attribute that to the 93 octane we have here with none of the crap additives some states require for cleaner emissions.
Jason
Jason
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TECH Fanatic
Joined: Jun 2003
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Ounce for ounce Torco is much cheaper that some of the octance boosters that cost $5-6 a can. Torco raises the octane in real points (full points rather than 1/10's of a point).
A 1/4 can of Torco should easily get a tank of 91 up to 94 (that's about $3 or 25 cents a gallon for a 12 gallon fill).
http://forums.nasioc.com/forums/arch.../t-420798.html
http://www.need4speedpower.com/torco.html
A 1/4 can of Torco should easily get a tank of 91 up to 94 (that's about $3 or 25 cents a gallon for a 12 gallon fill).
http://forums.nasioc.com/forums/arch.../t-420798.html
http://www.need4speedpower.com/torco.html
The LS1 was tuned to run on premium gas. Your car runs 28 degrees timing from the factory. If you don't want to spend money to buy the kind of gas your car was designed to run on/needs, then maybe you need a honda. Ping is not always audible either. Your car is a V8 not a VTEC! 
Torco turns 93 octane into (as much as) 104 octane? If that's true of one 32 oz bottle, the "concentrate" would have to be somewhere in the neighborhood of 550 octane in order to accomplish a 104 octane result with only 10 gallons of 93. I don't see that happening. Plus, it's 13 bucks per 32 oz bottle; that's half of a tank of 93. Doesn't smell right to me.
our cars are designed to run on 91/93, but it won't necessarily hurt it to run on 87 or 89. the car will just remove timing to compensate. our books say permium for best performance
I don't understand why you would use 87 octane and run around on the low octane fuel table? Talk about a buzz kill. I know gas prices suck, but that is what honda's are for.
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Joined: Jun 2003
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Originally Posted by BigE
Torco turns 93 octane into (as much as) 104 octane? If that's true of one 32 oz bottle, the "concentrate" would have to be somewhere in the neighborhood of 550 octane in order to accomplish a 104 octane result with only 10 gallons of 93. I don't see that happening. Plus, it's 13 bucks per 32 oz bottle; that's half of a tank of 93. Doesn't smell right to me.
You might to read through this thread. Somewhere in the thread th octane is calculcated to be 530. I'm convinced this stuff works and costs out as I calculated in a previous post if you want to raise octane from 91 t0 93.
http://forums.nasioc.com/forums/arch.../t-420798.html
This quote is from the same thread.
"Here is a test that one magazine did on the Torco Accelerator added to 94 octane gas against 114 octane race gas. Even though the race gas made more HP, it was only 10 HP more and at twice the price according to the article.
The instrutions they had on the bottle say:
For 97 octane, treat 20 gallons of 93
For 104 add 2 cans to 20 gallons
They had a 15 gallon tank and used 2 cans in it to make a estimated 105-106 octane.
http://server6.uploadit.org/files/rankink-chart_2.jpg
http://server6.uploadit.org/files/rankink-chart_1.jpg
If anyone wanted to know what the test car was, a 87 mustang with the following mods: 306 using R 302 block, AFR 185 heads, X-303 camshaft, 75 lb injectors, victor 5.0 intake, Western motorsports DFI, Paxton Novi making 21 lbs of boost, spearco air-to-air intercooler, and full exhaust."
Last edited by dlandsvZ28; Sep 1, 2005 at 10:38 PM.