reddozen

At what point would you need to start running race gas? i'm trying to build as much as i can without it.

a little more in detail:
-what does it help with?
-disadvantage besides price... etc?
-what kinda mods would require a race gas setup?
and would it require a special setup to run?
-I plan tp run a pre-mix setup. How would the gas effect this?
-gas milage changes?
-anything i missed? lol

wow a lot of Q's... heh

obviousboy

you can run race gas when ever you want...honestly your best bet is to search on here or on google.com there is so much info about running c12 c14 c16 toulene xelene (sp?) leaded unleaded..

Helps with (not limited to)
Lets you run higher boost
Burns cleaner and cooler (correct me if im wrong)

Disadvantages none that I know of
(its race gas)

Doesnt require a special setup

Premix. premixing what with what. If your thinking about premixing race gas and pump gas. There is simple formulas around like 1 part 93 octane and 1 part c14 with give you 103.5 octane.

hope this helps

Evil Aviator

The point at which you enter a race class where it is allowed and everybody uses it to remain competitive.

Then just stay in a race class that doesn't allow it. It's as simple as that.

Mostly it helps with detonation, but also race fuel tends to have more power (btu/pound).

Increased pollution, possible leading problems with leaded race gas, some race gas has toxic fumes that hurt your health, some race gas is corrosive and requires a special fuel system, and most race gas is difficult to store because it goes bad fast and it may be hazardous to store.

At minimum you need a fuel control computer (assuming EFI), although a full EMS would be much better because you would probably also want to optimise your ignition timing for the race fuel. If you tune with an O2 sensor, you will want to get one with a lambda or voltage readout, since race fuel rarely has the same characteristics as pump gas, which means any AFR readings will be incorrect if the AFR meter is calibrated for pump gas.

I'm not aware of any differences.

You can't really compare track driving with city or highway driving.

reddozen

thanx guys!

osdesigns

Running leaded race gas will damage smog components very fast, such as O2 sensor, Cat-converters, and etc... Aside from that, it runs cleaner and more stable. The higher octane rating will allow you to run more boost.

On a knock sensitive engine, the race gas can effect the timing. It will also effect the gas milage if more timing can be induced.

osdesigns

Also you must make sure the fuel you got is rated RO or MO. So you can accurately calculate the cylinder pressure, and estimat the amount of boost you can run.