egr disable?
Elder User
Joined: Jan 2007
Posts: 501
Likes: 0
Originally Posted by montecarlo31
Just wanted to throw this out, why, if EGRs are so great why does GM design it's LSX blocks without them. 4.8, 5.3. 6.0 do not use them and make great hp and torque and get without a doubt better fuel economy then a 4.6, 5.4
Last edited by elmo8641; Oct 14, 2007 at 06:20 AM.
New User
Joined: Jan 2012
Posts: 7
Likes: 0
newb question, but i just do not understand how taking hot exhaust gas and feeding it into the intake valve on a combustion chamber will lower the combustion chamber temps? wouldn't using cool air from the atmosphere be a better solution?
New User
Joined: Jan 2012
Posts: 7
Likes: 0
what is required for a GAS engine to ignite? 3 simple things: oxygen, an ignition source (spark), and some kind of a fuel source (gasoline).
correct me if im wrong, but wont reusing exhaust gas (mixed with normal air) not produce as much energy or be as volitile as using pure oxygen mixed with the fuel? so as far as im looking at this, more power will be created and be able to burn more efficently using clean, air.
correct me if im wrong, but wont reusing exhaust gas (mixed with normal air) not produce as much energy or be as volitile as using pure oxygen mixed with the fuel? so as far as im looking at this, more power will be created and be able to burn more efficently using clean, air.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
Reusing exhaust gas does cool the combustion process down. The EGR is there to lower the PEAK combustion temperatures. This reduces the formation of NOx, oxides of nitrogen, which cause smog and asthma.
New User
Joined: Jan 2012
Posts: 7
Likes: 0
could i just build myself a set of headers and have much less back pressure allowing the exhaust to escape quickly and easier? I'm building a machine built for wheelin some trails and want the engine to be as reliable as it could be, just having the utmost basic engine controls for it run and run with as much power as it can.
Posting Guru
Joined: Aug 2007
Posts: 1,714
Likes: 1
From: Canton, IL
Yep you can, as long as it does not see a paved road unless on a trailer if your in a state that cares about emmisions.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Tuned
Joined: Jan 2009
Posts: 265
Likes: 12
There's two ways to lower combustion temps 1 is the egr while adding less fuel (lean)to keep ping under control and 2 is to add more fuel to run richer like at wot. More fuel=lower combustion temps and less mpg. Like at wot.
Thread
Thread Starter
Forum
Replies
Last Post
1925mosin
Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150
10
Feb 20, 2013 11:46 AM
SilverDually
1999 - 2016 Super Duty
19
Aug 29, 2005 12:13 AM
