Race fuel octanes???
Race fuel octanes???
Im taking her to the track tonight and would like to buy some race fuel to maybe get a little extra kick.Does anyone have an octane suggestion or any advise.I have used race fuel in other cars but never in bigL.Thanks
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Joined: Sep 2004
Posts: 363
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From: Missouri
Originally Posted by bigL
Im taking her to the track tonight and would like to buy some race fuel to maybe get a little extra kick.Does anyone have an octane suggestion or any advise.I have used race fuel in other cars but never in bigL.Thanks
Ben
EDIT
This may help also
http://www.vpracingfuels.com/vp_01_fuels.html
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Joined: Sep 2004
Posts: 363
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From: Missouri
Originally Posted by bigL
I have an Srt intake full exhaust including S&S headers TC,valve body,3;76 lsd and all the suspension goodies.
Yah I wouldent use anything over 104 unless you have some sort of fuel tuning device to lean the car out.
Ben
Thanks.What Ive done in the past is 1/4 tank of 94 and 1/4 tank of 110.Ive never done this in my GS but may have to if I cant find 104.Thanks for the info.I'll post times early next week.
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Rookie
Joined: Jun 2005
Posts: 53
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From: il
Originally Posted by bigL
How so??????
higher octane just burns slower and is harder to ignite. so without any addition timing increase or ignition system upgrades it would just be a waste of money, and energy in the engine.
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Originally Posted by LBC
well, the lexus computer was tuned to run on 91-94 octane. the mods you have would hardly cause any detonation that would need the level of increase for higher octane.
higher octane just burns slower and is harder to ignite. so without any addition timing increase or ignition system upgrades it would just be a waste of money, and energy in the engine.
higher octane just burns slower and is harder to ignite. so without any addition timing increase or ignition system upgrades it would just be a waste of money, and energy in the engine.
CL Community Team
Joined: Apr 2004
Posts: 17,329
Likes: 210
From: Miami, Florida
We sell 100+ octanes at our track here in Mexico City, all leaded. It really won't have any effect in a vehicle unless two things, the gas is poured in when the tank light is on or as we recommend, completely empty.
Second, we tell people to check their timing as I have seen on repeat occasion people just fill the stuff up, go to the track and get maybe .1 benefit at the most in the 1/4 mile. From our experience, the leaded gas won't immediately hurt the catalytic converters on just one tank, and one of the benefits is better valve seating, but the goal is to go faster.
Second, we tell people to check their timing as I have seen on repeat occasion people just fill the stuff up, go to the track and get maybe .1 benefit at the most in the 1/4 mile. From our experience, the leaded gas won't immediately hurt the catalytic converters on just one tank, and one of the benefits is better valve seating, but the goal is to go faster.
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Joined: Jun 2005
Posts: 53
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From: il
Originally Posted by bigL
I can see the computer part but Im pretty sure higher octane will ignite faster and burn faster.
87 burns the fastest and hottest, thats why it causes "knock" is so many cars.
you'll go slower, stick to premium pump gas.
Rookie
Joined: Jun 2005
Posts: 53
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From: il
Originally Posted by Lexmex
We sell 100+ octanes at our track here in Mexico City, all leaded. It really won't have any effect in a vehicle unless two things, the gas is poured in when the tank light is on or as we recommend, completely empty.
Second, we tell people to check their timing as I have seen on repeat occasion people just fill the stuff up, go to the track and get maybe .1 benefit at the most in the 1/4 mile. From our experience, the leaded gas won't immediately hurt the catalytic converters on just one tank, and one of the benefits is better valve seating, but the goal is to go faster.
Second, we tell people to check their timing as I have seen on repeat occasion people just fill the stuff up, go to the track and get maybe .1 benefit at the most in the 1/4 mile. From our experience, the leaded gas won't immediately hurt the catalytic converters on just one tank, and one of the benefits is better valve seating, but the goal is to go faster.
leaded will not clog the cat up, but it will very easily kill an 02 sensor, and quickly and foul plugs out.
CL Community Team
Joined: Apr 2004
Posts: 17,329
Likes: 210
From: Miami, Florida
Originally Posted by LBC
100-104 sunoco or vp or torco is all unleaded.
leaded will not clog the cat up, but it will very easily kill an 02 sensor, and quickly and foul plugs out.
leaded will not clog the cat up, but it will very easily kill an 02 sensor, and quickly and foul plugs out.
If you run leaded enough time of course that cat is going to say meow, as it doesn't have nine lives.