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Hey guys, long time no speak Bit of an odd question. My friend and I were talking the other day about the race car and he asked a very interesting question that I couldn't answer. I was saying that the plugs looked perfect when we took them out to check them and so the engine wasn't running rich. He asked if face fuel has the "sooting agent" in it that normal pump gas has. In other words, would th plugs soot, even if the engine were funning rich Anyone got any ideas? Tash
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soot is just carbon particles which are left after incomplete combustion, you could get soot with any crude-oil based fuel, the difference is that some fuels are more volatile than others, thus are less likely to combust 'incompletely'. I don't know what the difference is between race fuel and ordinary pez, but I would guess that its very similar but with anti-knock additives to bosh the octane no. up, (necessary for high compressio ratios, turbocharging etc) if this is the case its no more or less likely to create soot.
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Last Edit: Jul 8, 2005 16:19:25 GMT by Mr_Bo11ox
1972 Fiat 130 1985 Talbot Alpine 1974 Lancia Beta Saloon 1975 + 1986 Mazda 929 Koop + Wagon 1982 Fiat Argenta 2.0 iniezione elettronica 1977 Toyota Carina TA14 BEST CAR EVER!!!!!!!! 1979 Datsun B310 Sunny 4-dr 1984 Audi 200 Quattro Turbo 1983 Honda Accord 1.6 DX GONE1989 Alfa 75 2.0 TS Mr T says: TREAT YO MOTHER RIGHT!
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All depends on what you consider race fuel to be. Fuel dosent have a 'sooting agent in it as such, it all depends on how complete the burn is, and how many particulates are left. If the ratio of fuel to oxygen in the cylinder isnt perfect (never will be) then there are deposits left as carbon, As fuel its in the cylinder as very small droplets, not enough oxygen can contact the fuel and so not all of it will burn. This is why race cars run slightly rich (lambda 0.8) this will ensure that all of the oxygen burns but particulates and emissions will be higher as not all the fuel is burnt. If run lean (lambda 1) then all of the fuel burns but not all the oxygen, so emissions drop but so does power.
With 'race' fuel the octane number is higer, this means that the engine can be run with higher compression and more advance (not always a good thing) this means a more complete burn under richer conditions. And so the plug will get less deposits even when richer.
This brings me to my question - Has anyone tried making their own octane booster? I am going to try a toluene mix with my fuel, this will raise the octane and enable me to run more boost with no detonation. F1 turbo and group B cars used this to make obsene power and still have their engines stay together.
Cheers J
P.s. hope that i did say too much there, i hate preaching to the converted!
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