Mixing fuels

OK stupid question time, gas is limited in its detonation resistance by it's octaine rating, heavier oils like karosene are limited in their combustion by their molicules that are prone to rapid combustion (Centain I think is the name of it) Why don't we mix the two since they have opposite weaknesses would gas add more combustion speed to karosene/diesel/bio diesle, or would heavier oils add more knock resistance to gas? It seems to make sence, but I am sure there is some horrable side effect to doing this what is it?

OK yall that keep up with my water injection thread have already seen this link but for the rest of you this is why I am so intrested in making an extreamly high octaine fuel.
http://www.sdsefi.com/techocta.htm
Read that page and see the difference that you can make with with methonol, now just imagine if we could add the ignition resistance of Kerosene to that:) That is some slow burning stuff in fact you can throw a lit cigaret into it and it won't light, plus we could get the added benifit of the extra lubracation that diesels get from their pre-combustion fuel.

a couple of things come to mind... i dont think diesel or kerosene will stay mixed with gasoline. and i guess you never have seen a gas engine get even partially filled with any fuel other than gas... they dont run. ive seen somebody accidently top off their tank with only a couple of gallons of diesel and it had to be towed into the shop.

a couple of things come to mind... i dont think diesel or kerosene will stay mixed with gasoline. and i guess you never have seen a gas engine get even partially filled with any fuel other than gas... they dont run. ive seen somebody accidently top off their tank with only a couple of gallons of diesel and it had to be towed into the shop.
Yes but that engine was not set up for the kinds of pressures to combust diesel the kinds of pressures that we want for massive power. You can suspend almost any liquid in any other liquid, you can even mix water and gas if you use acitone. Farrari did that years ago to get some water into their engines after water injection was banned, yet again had that engine not been setup to run that mix it would not work either. I am sure there is somthing that will suspend diesle in gas or vice versa. Do yall know of anone that has tried anything like this?

It might have to work in a twin injector setup in turbo applacations since it could not make those pressures without the boost on, but in high compression NA engines you could mix them. Give me yalls feedback, is there any reason other than ignition timing that diesels have to work off of direct injection? The whole idea just makes sence to me I would love to find out if it works. The diesel keeps the gas from preigniting (by raising the octaine of the fuel), the spark ignites the gas, the additional heat and pressure ignite the diesel. Sounds perfect, but I need to find a really really tough engine to test it with like a 2JZ or somthing, because when diesel ignites it makes all kinds of pressure!

maybe if you had a diesel/gasoline hybrid where it had both injectors but injected the gasoline like a gasoline engine but it was extremely lean, then when the gasoline ignites you start injecting the diesel and it works like a diesel.

To try to create this you might want to start with a diesel engine because they're designed to withstand all of the pressure from the diesel and turbocharger and all that good stuff.

What if it did not need to be direct injection? What if I could do it with just a fine mist from a regular fuel injector. I am pretty sure that I can get the diesel to burn fast enough by playing with the gas to diesel ratio but if I have to run the diesel too lean it kind of defeats the purpose of doing it. I need to know what the exact octaine rating of diesel is before I can know how effective it will be. I know I can run a 10:1 ratio almost for certan because there is no way the precombustion pressures in a diesel engine excede the early/mid combustion pressures in a gas engine. I think I could use a very strong gas engine like a 7m gte, or an SR20 with forged internals since they are designed for massive pressure. I have even seen a stock block stock internal 2jz make over 1000hp that has to be a higher pressure than the avrage diesel.

I'm not sure that the 2 fuels can mix. if they don't mix you'll get the gasoline igniting before you want then it'll set off the diesel, you'll still get knocking but it won't be as bad.

I'm not sure that the 2 fuels can mix. if they don't mix you'll get the gasoline igniting before you want then it'll set off the diesel, you'll still get knocking but it won't be as bad.
they don't have to mix I can inject them through different injectors. it would take alot more presure to get it to knock that is my point, more knock resistance=more power :) plus diesel has more BUTs+diesel makes more torque and torque at 5252rpm=hp:) Now I just need to know how well the diesel burns at those speeds. Like I said before I would have to inject them sepretly on a turbo engine for non-boost situations anyway.

I just found out somthing really intresting about diesel its octaine rating is less than 50! Yes despite being the very slow burning substance that it is it has a low octaine rating itself. However karosine has potential it is the primary ingredent in alot of octaine boosters. Toluine has alot of promise since it does not mess with A/F ratios too much,, and has a good octaine rating itself. That was the primary ingredient in the gas during the turbocharged Formula one days. Mix 2/3 92 oct pump gas to 1/3 toluine and you are making 98.6 octaine, not bad. But I have found a few petrol bi-products that rate in excess on 200 octaine! I am going to do some more reserch into them and see if any of them are a fesable fuel addasive for us budget minded street going power junkies :) BTW the best "octaine booster" I have seen to date is water, sounds stupid hu read my water injection thread a guy increased his boost pressure by 10 psi over what his street car could handle normaly with no intercooler! You would need about 10-14 more octaine in your gas to do that reliably, in a recent test I saw the best off the shelf stuff only increases it by 2.8 octaine (RON) and cost more than racing gas. Mom was right water is good for you, it keeps your car from blowing up :)