My silver GCSRT8 has 1911 miles and I can't get a 0-60 launch faster than a high 6 seconds.:mad: What show be the problem?:confused: I am using regular gas. Are the 4.8 seconds obtained using premium gas only?
Are there any other tricks to lower my time launch?:confused:
Thanks!:)

My silver GCSRT8 has 1911 miles and I can't get a 0-60 launch faster than a high 6 seconds.:mad: What show be the problem?:confused: I am using regular gas. Are the 4.8 seconds obtained using premium gas only?
Are there any other tricks to lower my time launch?:confused:
Thanks!:)
You definitely want to AVOID using Regular fuel!! How are you measuring your 0-60 time, at the track, Dashhawk, or?

yes premium only! the computer pulls timing when you use regular and you lose serious horsepower.

that said, how are you measuring these 0-60 times?

You really need to run premium gas. Most likely the engine controller is adjusting for the lower octane which will cut your power. Also, environmental factors like air temperatures and altitude among others can impact your performance.

You definitely want to AVOID using Regular fuel!! How are you measuring your 0-60 time, at the track, Dashhawk, or?
damn beaten like a red headed step child

Here in Brazil for economical and environmental reasons...... we mostly find regular gas that has 20% ethanol on it. gasohol??? over the USA? It has approximately 86 octanes. The dealer says it can be runned using regular gas.
I timed a 0-60 several times on an empty road close to home using an appropriate chronometer. Very amateur........ I guess:(

Here in Brazil for economical and environmental reasons...... we mostly find regular gas that has 20% ethanol on it. gasohol??? over the USA? It has approximately 86 octanes. The dealer says it can be runned using regular gas.
I timed a 0-60 several times on an empty road close to home using an appropriate chronometer. Very amateur........ I guess:(

I believe you can run it but you can't do any WOT with anything other than 91 oct or higher.

Thanks for the info.:) I'll try to get my hands on some premium fuel and run some new times and see what happens.:)

Thanks for the info.:) I'll try to get my hands on some premium fuel and run some new times and see what happens.:)

You might want to go ahead and get a decent octain booster for the rest of that tank!

Do the octane booster really work?

The only octane booster than was proven to work is NOS Racing Fuel Octane Booster. It was proven to raise octane levels much higher that any other additive available.

I'll see if I can find it over here...... Thanks.....

Speaking with my Father in-law(Sogro) from Bahia, He has confirmed the difficulty finding High Octane gas there. My best guess is to try to pay someone at the local airport. You should get some good gas there. You can also research at your local paint store for 5 gallon containers of Toluene(Paint Thinner) You can easily up your octane with this.

This is directly from shell. IF you do find it, handle it with care, it is very dangerous.

Toluene is used to make isocyanates which are, in turn, used in combination with polyols to manufacture polyurethanes. Polyurethanes are then used in the manufacture of a wide variety of goods such as foams for furniture and bedding, coatings for floors and furniture, artificial sports tracks, ski suits and waterproof leisure wear. Toluene is used to make phenol, particularly in Europe, and it is also an important solvent.

A lot of toluene is also converted into either benzene or xylenes, as these aromatics are in greater demand. In addition, toluene's high octane and low vapour pressure make it a very desirable blending component, and substantial volumes are used in motor gasoline.

Toluene is used to make isocyanates which are, in turn, used in combination with polyols to manufacture polyurethanes. Polyurethanes are then used in the manufacture of a wide variety of goods such as foams for furniture and bedding, coatings for floors and furniture, artificial sports tracks, ski suits and waterproof leisure wear. Toluene is used to make phenol, particularly in Europe, and it is also an important solvent.

A lot of toluene is also converted into either benzene or xylenes, as these aromatics are in greater demand. In addition, toluene's high octane and low vapour pressure make it a very desirable blending component, and substantial volumes are used in motor gasoline.

Interesting, good info.

Getting my hands on airplane gas is no problem for me since I am a private pilot. The biggest problem is that the aviation gas still uses plumb which is totally bad for the catalytic converter of the new cars........Loved the (sogro)! Where are you living in the US?:)

I have a couple of gallons of xylene in the garage from bed lining my Jeep XJ. Is it safe to say that I should just pour it in the tank?? :rolleyes:

Torco is another additive that works quite well.

Man!!!!!! Are you guys chemists? Are you guys 100% sure we can blend those solvents in the tank and she will run without any problems? What about the catalytic converter?

Getting my hands on airplane gas is no problem for me since I am a private pilot. The biggest problem is that the aviation gas still uses plumb which is totally bad for the catalytic converter of the new cars........Loved the (sogro)! Where are you living in the US?:)


I am in Tampa Florida. He was actually sitting behind me on the other Mac while I was reading your post.

What octane is your plane fuel there? 100, 105, 110, 115 Everything under 110 should be unleaded. I am sure you can get paint supplies cheap there also. This might be your best bet!! Boa sorte, tchau (how is my portuguese)

Man!!!!!! Are you guys chemists? Are you guys 100% sure we can blend those solvents in the tank and she will run without any problems? What about the catalytic converter?

NO not chemists!! But most of us here are avid racers and these are very old tricks or alternatives to race fuel. And right now much much cheaper!!!

it is perfect..........

it is perfect..........

By the way. I would not put any of those chemicals in my tank. I was teasing. If you cannot find decent 92 premium fuel, then check into the alternatives. You will need to consider mixing ratios. I am sure the internet can provide you with the proper mixing ratios for your solution.

The aviation fuel over here is 100 octanes and it contains lead. They warn people over here about this......or at least it contained lead till some time ago...... Will check on it......

A little off topic, Do you fly for a private air carrier or just for yourself. And if you do fly for a carrier who. I have a good friend that works for NETJETS. They have a hub in Sao Paulo.

I am a private pilot, I do not fly for an airline carrier..... by the way I am an ophthalmologist........that happens to love machines especially the ones that are fast.........

Regular fuel?! Forget that.

I am a private pilot, I do not fly for an airline carrier..... by the way I am an ophthalmologist........that happens to love machines especially the ones that are fast.........

Muito agradável, se você começar aos estados unidos olhe-me acima. Translator, probally does not make much sense

Also, you might want to use my MODs page to get your temps lower down there. Good luck and please let me know what you find out for gas.

Sorry for being off topic but I live 300 km form Sao Paulo..........If you friend ever shows up in Ribeirao Preto, let him know we can have some fews drafts over the famous Pinguin......Ask your father in law, he may have heard of it.......

doesnt leaded gas just foul up the 02 sensors ? - nothing catastrophic.

http://farm1.static.flickr.com/66/153078329_6295062e8b.jpg?v=0

I am up for that!!! I could use some good cozinhar e cerveja.

Avgas won't work. the Lead content is very high, it'll plug the Cats and kill the O2 sensors, not to mention the carbon build up in the combustion chamber and raise the compression even more.


Jeff

Here in Brazil for economical and environmental reasons...... we mostly find regular gas that has 20% ethanol on it. gasohol??? over the USA? It has approximately 86 octanes. The dealer says it can be runned using regular gas.
I timed a 0-60 several times on an empty road close to home using an appropriate chronometer. Very amateur........ I guess:(

It's got to be some fairly poor gasoline stock to only have a 86 octane rating with 20% ethanol. Ethanol's octane rating is real high (?110 octane rating is what pop's in my geriatric brain?), but what I really have to wonder is whether you're losing power from not only the lower octane, but also d/t the limited BTU content of ethanol as compared to gasoline (substantially lower). (thus, would you need larger fuel injectors to offset the lower energy content of the ethanol? Just a thought. Some of people with racing experience could better answer the question than I have any hope of knowing. Another question: How is octane rating determined in Brazil? Europe and the USA do it differently, and the octane numbers do not correspond. Final question: Not knowing anything about the geography of Brazil, what is the altitude where you live?

I wouldn't use paint thinner.... common ingredient's in paint thinner include: methanol, galacial acetic acid, water, alcohol, methyl ethyl ketone etc.

Right off the bat methanol will eat up your rubber in the fuel system. Cars that run methanol need a special fuel system, like fuel injectors and fuel pumps etc.

Back in the old days I guess it was easier to do little tricks as this but they were carburated motors, not these highly sophisticated fuel injected systems we have today.

I would also stay away from av gas, as mentioned, not good for cats and o2 sensors.

Solution? Easy.

Buy a methanol/water injection kit like from snowperformance dot net, or any other company that sells that you feel comfortable with, ive had great results with Snow.

I had a similar problem as you when I was living in Mexico. We got 92oct but I didn't really trust it.

It injects methonal/water mix through the intake air stream directly into your combustion chamber. Will raise your octane level significantly and will also cool down your intake charge temp. You could even advance your timing later if you wanted to. You could pretty much forget about pining and degnation, and will keep your combustion chamber very clean from carbon build up.

Snow sells a meth/water mix in one gallon bottles. If you have a hard time importing the liquid (as I did also). You might be able to buy pure methanol from your country in a barrel. I bought a 55gal methanol barrel of Methanol in Mexico for about $200. Just make sure its PURE meth. Mine was 99.9 percent pure and about .01% humidity. Now im in the States and just buy the finished mix from Snow.

Have trouble finding pure meth? Find at a drug store the purest alcolhol available. In Mexico they sell bottles that are blue that have about 60/40 ethanol/water mix. And the red label stuff is 96/4. Its pure cane alcohol, or Ethonal. If you can get the 96/4 or 70/30, just mix it with distilled water until you get a mix of 50/50. Obviously if you have 70/30 you will use a smaller portion of distilled water to reach 50/50. Some people even use 100% Meth or Eth, it just all depends on your goal. I like 50/50 due to my high heat of the supercharger, you might not need so much water, but 50/50 is a good medium. NOTHING has the cooling power of water. The trick is that you don't want to quench your combustion, but if you get a kit you will learn all that. The Snow kit has a controller for adjusting how much to spray and how much not to spray at a given RPM, or MAFv better said.

Ethonal has a little less cooling power and octane level than Methanol, but it will get the job done. The less cooling power of the Eth is nothing to worry about especially in a N/A motor, the water will take care of that.

Just another idear ;)

Note:

You might also be able to buy like at a Home Depot (Brazil?) denatured alcohol, if you find the right one I think its pretty much almost pure Ethonal, but I would fight to get pure Meth.

I run pure 100% methanol in mine and it has worked amazingly. I was able to go from 10psi to 15psi with no other changes.

I think that you are barking up the wrong tree with this regular gas thing. i have run mid to high fours on midgrade (I admit I have never used "regular"). However, I can't imagine a 50 percent performance loss with regular gas. Something else is definately wrong.

Something else is definately wrong.

First thing wrong is using a stop watch to measure time. Even if you do a 4.5 0-60 with 86oct I would still run meth...

I run pure 100% methanol in mine and it has worked amazingly. I was able to go from 10psi to 15psi with no other changes.

;)

I haven't even tuned for my meth yet. Can't wait!!!

Why not try Torco's accelerator, it will quickly tell you if it is a gas issue. I do not work for, nor am I affiliated with Torco. I do use the the Torco accelerator on my 1934 coupe that has a 351w with a 671 Blower. Under boost my compression level is much higher the our GCSRT's and I have not had any issues.

do a google on the product and you will find lot of great reviews.
The unleaded version of Torco’s Mach Series Accelerator will transform super unleaded pump gas to 107 octane racing fuel. This is not an octane booster but rather concentrated race fuel designed to blend with 91 to 93 octane pump gas.

It's got to be some fairly poor gasoline stock to only have a 86 octane rating with 20% ethanol. Ethanol's octane rating is real high (?110 octane rating is what pop's in my geriatric brain?), but what I really have to wonder is whether you're losing power from not only the lower octane, but also d/t the limited BTU content of ethanol as compared to gasoline (substantially lower). (thus, would you need larger fuel injectors to offset the lower energy content of the ethanol? Just a thought. Some of people with racing experience could better answer the question than I have any hope of knowing. Another question: How is octane rating determined in Brazil? Europe and the USA do it differently, and the octane numbers do not correspond. Final question: Not knowing anything about the geography of Brazil, what is the altitude where you live?

You are totally correct. Gas here sucks..... and it would be even worse if it wasn't for the ethanol added as "anti knocking", replacing the old fashioned lead....We can buy regular pure hydrated ethanol at the gas pumps around here but you fuel system and compression rate has to be modified to be able to use it without harming the engine I guess. This automobile is not licensed to use pure ethanol and if I use it my warranty may be voided.:(

I think that you are barking up the wrong tree with this regular gas thing. i have run mid to high fours on midgrade (I admit I have never used "regular"). However, I can't imagine a 50 percent performance loss with regular gas. Something else is definately wrong.


That's a good point over there....... My rig runs perfectly, the only thing she's not equal to the US version is the 0-60 time. The only thing that is totally different from Florida for instance, is the gas. At least that I can thing of......:confused:

Avgas won't work. the Lead content is very high, it'll plug the Cats and kill the O2 sensors, not to mention the carbon build up in the combustion chamber and raise the compression even more.


Jeff


Excellent point there......... agree 100%:)

I wouldn't use paint thinner.... common ingredient's in paint thinner include: methanol, galacial acetic acid, water, alcohol, methyl ethyl ketone etc.

Right off the bat methanol will eat up your rubber in the fuel system. Cars that run methanol need a special fuel system, like fuel injectors and fuel pumps etc.

Back in the old days I guess it was easier to do little tricks as this but they were carburated motors, not these highly sophisticated fuel injected systems we have today.

I would also stay away from av gas, as mentioned, not good for cats and o2 sensors.

Solution? Easy.

Buy a methanol/water injection kit like from snowperformance dot net, or any other company that sells that you feel comfortable with, ive had great results with Snow.

I had a similar problem as you when I was living in Mexico. We got 92oct but I didn't really trust it.

It injects methonal/water mix through the intake air stream directly into your combustion chamber. Will raise your octane level significantly and will also cool down your intake charge temp. You could even advance your timing later if you wanted to. You could pretty much forget about pining and degnation, and will keep your combustion chamber very clean from carbon build up.

Snow sells a meth/water mix in one gallon bottles. If you have a hard time importing the liquid (as I did also). You might be able to buy pure methanol from your country in a barrel. I bought a 55gal methanol barrel of Methanol in Mexico for about $200. Just make sure its PURE meth. Mine was 99.9 percent pure and about .01% humidity. Now im in the States and just buy the finished mix from Snow.

Have trouble finding pure meth? Find at a drug store the purest alcolhol available. In Mexico they sell bottles that are blue that have about 60/40 ethanol/water mix. And the red label stuff is 96/4. Its pure cane alcohol, or Ethonal. If you can get the 96/4 or 70/30, just mix it with distilled water until you get a mix of 50/50. Obviously if you have 70/30 you will use a smaller portion of distilled water to reach 50/50. Some people even use 100% Meth or Eth, it just all depends on your goal. I like 50/50 due to my high heat of the supercharger, you might not need so much water, but 50/50 is a good medium. NOTHING has the cooling power of water. The trick is that you don't want to quench your combustion, but if you get a kit you will learn all that. The Snow kit has a controller for adjusting how much to spray and how much not to spray at a given RPM, or MAFv better said.

Ethonal has a little less cooling power and octane level than Methanol, but it will get the job done. The less cooling power of the Eth is nothing to worry about especially in a N/A motor, the water will take care of that.

Just another idear ;)


Hydrated ethanol is easily found over here because 50% of all automobiles run on pure ethanol from sugar cane. Brazil is one of the top countries in the world when it comes to alcohol production, and it's respective technology for engine application. Enough said......... my rig is not licensed to use this kind of fuel, if I use it my warranty will be voided. :mad:
Owners manual that came with de GCSRT8 indicate we can use regular gas containing 25% of alcohol......(ethanol)........:confused:

Hydrated ethanol is easily found over here because 50% of all automobiles run on pure ethanol from sugar cane. Brazil is one of the top countries in the world when it comes to alcohol production, and it's respective technology for engine application. Enough said......... my rig is not licensed to use this kind of fuel, if I use it my warranty will be voided. :mad:
Owners manual that came with de GCSRT8 indicate we can use regular gas containing 25% of alcohol......(ethanol)........:confused:

Not sure you understood how this system works. It does not go into your fuel system, it injects after your fuel system, eg; fuel pump and injectors. If you get tricky you can easily hide it, or remove it when you take it in for service, but do something, those motors need higher octane fuel, badly.

I would look at your warranty contract, if your owners manual says you can run eth gas, your warranty should not void.

Good luck.

higher octane fuel prevents knock, knock sensors are triggered when using a lower octane fuel which pulls timing to prevent knock normal rule of thumb is for each degree of timing pulled you loose 6-10 hp, by using lower octane fuel your proably losing 2-3 degrees of timing.

when i run 93 octane pump gas in my srt-4 at 29 lbs. of boost on my stage 3 turbo i retard 8.5 degrees of timing without my water/methanol, with the water methanol i only retard 1.5 degrees of timing, throw in 117 octane c-16 i advance 4 degrees of timing. so to make a long story short on pump gas with no water/meth and no race gas i make 321whp 334 tq to the wheels on the dyno, add in the water/meth and race gas i make 393 whp 412 tq.

my wifes gcsrt8 only has 900 miles on it and i would never put anything less than 93 octane in it, since 500 miles it has only seen gt-100 which you can tell it definity has more gitty-up and go.

still stock the other night at the track 13.2 @ 103.8 on gt-100

oh yea and one other thing my 60ft. was only a 1.88, i forgot to let air out of the tires, air pressure was at 42lbs, im sure if i would have dropped the air pressure to 25lbs i would have seen close to a 1.7 60 ft which should have put me at a 13 flat with a bone stock gcsrt8 jeep on gt-100.

By far the best additive you can buy that's been proven time and time again: www.torco.com

when i run 93 octane pump gas in my srt-4 at 29 lbs. of boost on my stage 3 turbo i retard 8.5 degrees of timing without my water/methanol, with the water methanol i only retard 1.5 degrees of timing, throw in 117 octane c-16 i advance 4 degrees of timing. so to make a long story short on pump gas with no water/meth and no race gas i make 321whp 334 tq to the wheels on the dyno, add in the water/meth and race gas i make 393 whp 412 tq.

my wifes gcsrt8 only has 900 miles on it and i would never put anything less than 93 octane in it, since 500 miles it has only seen gt-100 which you can tell it definity has more gitty-up and go.

still stock the other night at the track 13.2 @ 103.8 on gt-100

Remember there is zero oil in race gas (even unleaded 100 oct.) so you're going to need to spray WD40 or something similar past the TB while idling before shutting her down for the night. If you don't everything aluminum (cylinder heads) will be seriously pitted, it doesn't take that long to happen either.

Remember there is zero oil in race gas (even unleaded 100 oct.) so you're going to need to spray WD40 or something similar past the TB while idling before shutting her down for the night. If you don't everything aluminum (cylinder heads) will be seriously pitted, it doesn't take that long to happen either.
you couldn't be more wrong please do more research, gt-100 (sunoco 98 octane pump gas) is manufactured from oil just like every other pump gas on the market, it would be alchohol you are refering to. GT-100 WILL NOT pit aluminum and it WILL NOT corrode aluminum. c-16 is refined even more but is still an oil product with lead additive to raise the octane #'s and even if it did with the best catchcan in the world it would not stop oil vapors from the pcv line from entering the intake tract unless you disconect it completely. i have a 64' falcon that is alcohol blown i have to oil that because it runs off of alcohol only.

i will sell you some premium fuel, i'll ship it over in milk jugs, i'll even shrink wrap the jugs.

i will sell you some premium fuel, i'll ship it over in milk jugs, i'll even shrink wrap the jugs.
lol...sorry were VP racing fuel and cam2 dealers already thanks for the offer though.