running rich...

[dsyple]

i was just wondering...can't find anything....some people says it running rich is good...some say it won't really harm the motor...and it's best off to stay at stoichametric.....so is it bad to run rich?

[tokyoconc3pt5]

yeah running rich could cause detonation at higher rpms, because there is more fuel present than there is air to mix and burn with, some say its good, but you are putting undue stress on your rings, and seals. its and endless battle, rich vs. lean, but my advice if your going to run rich is this; make sure you have an intake so your getting dense low temp air, and upgrade your ignition system. your going to want a reliable spark at high rpm. and dont go past 2, 3 deg at most.

[90EX]

yeah running rich could cause detonation at higher rpms, because there is more fuel present than there is air to mix and burn with, some say its good, but you are putting undue stress on your rings, and seals. its and endless battle, rich vs. lean, but my advice if your going to run rich is this; make sure you have an intake so your getting dense low temp air, and upgrade your ignition system. your going to want a reliable spark at high rpm. and dont go past 2, 3 deg at most.

http://cb7tuner.com/vbb/showthread.p...763#post696763

[92BLACKEX]

Thats bad ass. Runnin it rich will give you some low end power, but less high end, and running it Lean with give you some high end, but thats not really a good thing to do. It can get to hot and shit.

[deevergote]

The normal bolt-on mods usually create a rich condition. Greater airflow is detected, and the ECU compensates by dumping more fuel. Many people I know are blowing black soot out of their tailpipe.

Rich is usually safer than lean, but still not good. Gasoline is corrosive, and it dries things out. If it seeps past the piston rings and mixes with the oil, it will counteract the lubricating properties of the oil, damaging engine components. A slightly rich situation, such as that brought on by bolt-ons, probably won't ever get that serious... However, it's better to be safe than sorry. A poorly written ECU program or stuck injectors could definitely cause harm... even hydrolocking if it's bad enough.


Also, a rich mixture won't cause detonation. Having too much oxygen and not enough fuel will do this. Too much fuel will actually help combat detonation. A simple detonation solution for many older or poorly designed turbo systems was to drown potential detonation with excess fuel.

[dsyple]

ohh i get it.....im getting my upgraded ignition soon....so it'll be okae for me to run rich....cause someone mentioned that detonation is cause by more oxygen...solid...thanx guyz....