Valvtect octane boost
11-03-2010, 01:53 PM
#17
2nd Gear
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ValvTect Octane Boost
Thanks for adding the info here. I have a few questions...
How was the octane improvement tested?
"It was tested using ASTM Procedures for testing Octane number. Both the research and the motor test methods were used. Higher results can be achieved using the research number."
With an additive, I would assume it changes the burn rate of the fuel. Do you suggest timing changes with your additive? "No, although advancing timing changes may give a boost in power in some racing applications."
Is there a HP loss due to changes in burn rate, if no other adjustments are made to the engine? "No, HP might potentially be a little better because the fuel burns better with the additive."
Are there issues with 10%, or the proposed 15% ethanol content in pump fuels? "No, This technology has been used in oxygenated fuel for years. It will raise octane in oxygenated fuels also, although the specific amount will vary depending on the specific fuel and the way it is formulated."
How was the octane improvement tested?
"It was tested using ASTM Procedures for testing Octane number. Both the research and the motor test methods were used. Higher results can be achieved using the research number."
With an additive, I would assume it changes the burn rate of the fuel. Do you suggest timing changes with your additive? "No, although advancing timing changes may give a boost in power in some racing applications."
Is there a HP loss due to changes in burn rate, if no other adjustments are made to the engine? "No, HP might potentially be a little better because the fuel burns better with the additive."
Are there issues with 10%, or the proposed 15% ethanol content in pump fuels? "No, This technology has been used in oxygenated fuel for years. It will raise octane in oxygenated fuels also, although the specific amount will vary depending on the specific fuel and the way it is formulated."
11-03-2010, 02:11 PM
#18
Lifetime Rennlist Member
There is no question that MMT works. It was developed and used early on, when lead was removed. EPA banned it for a while, but could not prove dangers so it has made a comeback (never went away in some countries).
I am always very skeptical of such products, especially when there is little or no technical info on the specific product - I spent quite a few years as an Automotive Engineer. Part of that time was testing some of the products with all sorts of claims about octane, emissions, HP, etc. The results were not a pretty sight. I have also run Octane tests with the CFR engine.
Also everyone should realize that many of these chemicals are HIGHLY toxic and must be handled very carefully. They were not really meant to be handled by an individual pouring from a bottle. I don't know the specific risk with MMT, but I am reminded that TEL (Lead in leaded gas) could kill you with fairly minimal skin contact. I would imagine that highly concentrated MMT would pose some real hazards and need careful handling.
I am always very skeptical of such products, especially when there is little or no technical info on the specific product - I spent quite a few years as an Automotive Engineer. Part of that time was testing some of the products with all sorts of claims about octane, emissions, HP, etc. The results were not a pretty sight. I have also run Octane tests with the CFR engine.
Also everyone should realize that many of these chemicals are HIGHLY toxic and must be handled very carefully. They were not really meant to be handled by an individual pouring from a bottle. I don't know the specific risk with MMT, but I am reminded that TEL (Lead in leaded gas) could kill you with fairly minimal skin contact. I would imagine that highly concentrated MMT would pose some real hazards and need careful handling.
11-03-2010, 02:20 PM
#20
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Sorry for the dumb question. But how does a small dose of any product turn a tank full of 91 octane to 93? Wouldn't the extra 2 octane need to already be in the 91 octane and the additive "unlock" the extra 2 Octane? If that were the case, then why wouldn't the refiners just release the entire octane level for consumption and sell for a price according to the level of oct?
11-03-2010, 07:41 PM
#21
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Also everyone should realize that many of these chemicals are HIGHLY toxic and must be handled very carefully. They were not really meant to be handled by an individual pouring from a bottle. I don't know the specific risk with MMT, but I am reminded that TEL (Lead in leaded gas) could kill you with fairly minimal skin contact. I would imagine that highly concentrated MMT would pose some real hazards and need careful handling.
11-03-2010, 08:48 PM
#22
Lifetime Rennlist Member
Sorry for the dumb question. But how does a small dose of any product turn a tank full of 91 octane to 93? Wouldn't the extra 2 octane need to already be in the 91 octane and the additive "unlock" the extra 2 Octane? If that were the case, then why wouldn't the refiners just release the entire octane level for consumption and sell for a price according to the level of oct?
Octane tests are pretty strange. (They may have changed over the many years since I ran them) but the engine is a single cylinder, big motor. As I recall it runs at ~100 prm for the testing. Research (RON) and Motor (MON) are different conditions. It used to be that one was closer to a car with auto trans while the other more accurately reflected a manual trans. But with emissions, much higher temps, electronic controls, I have no idea what these tests really mean.
Studies indicate that MMT is safe as an emission. However, I don't find info on how safe or dangerous it is to handle. The product being discussed in this thread, seems to be much more highly concentrated than others on the market - hence and handling dangers would likely be greater.
There is my 2 cents.
11-05-2010, 05:52 PM
#24
Rennlist Member
thats the million dollar question right. so often, guys equate "octane" with power. just adding octane and not changing anything else will result in lower power, unless you were pinging badly before. 
raising octane, will give less energy potential of the fuel, but slow the burn so you can do more with that fuel to get more energy out of it by optimizing the combustion process.
http://www.bajajusa.com/High%20Octane.htm
raising octane, will give less energy potential of the fuel, but slow the burn so you can do more with that fuel to get more energy out of it by optimizing the combustion process.
http://www.bajajusa.com/High%20Octane.htm
Thanks for adding the info here. I have a few questions...
How was the octane improvement tested?
With an additive, I would assume it changes the burn rate of the fuel. Do you suggest timing changes with your additive?
Is there a HP loss due to changes in burn rate, if no other adjustments are made to the engine?
Are there issues with 10%, or the proposed 15% ethanol content in pump fuels?
How was the octane improvement tested?
With an additive, I would assume it changes the burn rate of the fuel. Do you suggest timing changes with your additive?
Is there a HP loss due to changes in burn rate, if no other adjustments are made to the engine?
Are there issues with 10%, or the proposed 15% ethanol content in pump fuels?
