Dyno'd the Celi, Take a look... Options

[celicagurl152003]

[block]

on a ST? what mods did u have? pretty kool. aren't ST's 110hp?

[easternpiro1]

on a ST? what mods did u have? pretty kool. aren't ST's 110hp?

wow...only 87? at least i know what mine is...uh was

[celicaST]

on a ST? what mods did u have? pretty kool. aren't ST's 110hp?

yep, but im guessing two of those runs are with the nitrous. im scared to think what my car would put down on a dyno.

[celicagurl152003]

horsepower 105 @5200rpm torque 117 @2800rpm

[presure2]

im assuming 3&4 are with nitrous?
those runs(especially 4 looks REALLY lean...

[celicagurl152003]

yes runs 3 & 4 are with the Nitrous.....

[96c-oneconv]

still pretty decent numbers for an st. Keep up the good work.

[Kwanza26]

yes runs 3 & 4 are with the Nitrous.....

The runs with nitrious are dangerously lean.

[Batman722]

just so I am sure about this, this is what your engine has done to it (from your profile)

Heads 3 Angle Valve Job
Oversized Valves
Performance Cams Reground

and still you got only 87-88 to the wheels ?

and with

Dry Shot Nitrous Kit (75 shot)

you got 122-123 ?

it all just seems low to me.

[Steevo]

Altitude corrected or not? And at what altitude?

[lagos]

based on your dyno sheet, i wouldnt use the nitrous if i were you. your motor is VERY lean and wont last long.

[JFrost9]

this is a dumb question i know, but im just out to learn... what does a lean engine refer to? and what are you guys looking at to tell that?

[Kwanza26]

this is a dumb question i know, but im just out to learn... what does a lean engine refer to? and what are you guys looking at to tell that?

Lean means the engine isn't getting enough fuel. Tyically when reffering to gasoline engines, a good clean burn is an airfuel mix of about 14.7:1. A number higher than that means the airfuel mixture is lean (has more air). A number lower means the mixture is rich (more fuel). Most engines run rich around 13 to 12... rarely leaning out more than 14.7...

[phonex98]

Ok, i knew what lean meant but now im curious... why is too lean, bad. It would seem to me that a lean mixture would allow the gasoline to fully react, and having oxygen in excess, just blowing that out the exhaust? No ?

[rayneezy23]

im guessing that headers dont actually help

[Steevo]

The leaner the mixture the more prone to detonation it is, plus the flame front is much hotter and can actually melt a piston.

[lagos]

Ok, i knew what lean meant but now im curious... why is too lean, bad. It would seem to me that a lean mixture would allow the gasoline to fully react, and having oxygen in excess, just blowing that out the exhaust? No ?

think of it this way. there is a lot of heat inside a cylinder when its making power. the heat inside can cause detonation. the more fuel you put in there (rich), the better cooling and protecion you get. the less fuel you have (lean), the more you risk detonation.

you can clearly see by looking at the a/f chart that its only a matter of time till that motor goes, based on how lean it is.

[Bitter]

i wonder how much better a FED/OBD1 7A-FE would dyno with the same bolt ons? atleast theres a nice flat powerband all the way to redline.

[pure_dx]

^why dont u go dyno urs

btw: did u hook up the safc yet?