K&N Filter Performance Kit

From : Annonymous

Q: its best to arrive at the shop with alignment in the ballpark. i used to do front end work for a living- if you can drive on the rack you can bring it back into alignment. caster and camber are highly interactive on this vehicle ie you loosen the upper a-frame mounts and wiggle everthing around to change both settings. front end shops have a tool for that... if they are way off youre far less likely to get a satisfactory result from some guy whos used to just setting the toe-in. bullshit- toe is the last operation done. vans really need to be thrust angle aligned- not a driveway job. do you change your own oil do you do your own brain surgery some of us have curiousity that goes a little further curiosity killed the cat - -carl .

Replies:

From : moparman

your 01 should be ok too. in overdrive what is it people are doing that gave the 47re such a bad name -- nathan w. collier http//7slotgrille.com http//utilityoffroad.com .

From : tbone

i know i posted this a couple of weeks ago but i think i lost access to it since it took me so long to check it. but anyways i have recently acquired a 1974 dodge k8w100 club cab pickup and it doesnt run. it sat for about 3 or 4 years. i have already checked to see if it is getting gas and spark and its getting both. it does turn over but it will not completely start. im very stumped right now and i have very limited time to get this thing running so i can sell it. if anyone has any suggestions please let me know. thanks. -- message posted via carkb.com http//www.carkb.com/uwe/forums.aspx/dodge-truck/200506/1 .

From : coasty

on sat 11 jun 2005 012043 gmt tbone t-bonenospam@nc.rr.com wrote you are assuming that burn rate and octane rating are related. also asuming higher octane fuel burns slower. this asumption is not necessarily true. but it is not false either and i am not the one saying high octane fuel will cause damage to certian engines the manufacturer is!!! i am simply giving a possible reason as to why. the burn rate of a fuel is a measurement of the time required for complete combustion of the air/fuel mixture. the notion that octane ratings affect the burn rate of fuel is about 180-degrees from reality. really how octane is a level of fuel stability and it is impossible to make a given fuel more stable without affecting the burn rate. burn rate is a function of several variables and the two are completely independent. although there is generally a correlation between octane ratings and burn rates the fuel mixture ratio has a lot more effect on burn rate than octane rating does. hahahaha talk about doubletalk. while as you say many variables that can effect the burn rate there cannot be a correlation between octane ratings and burn rate unless octane ratings effect the burn rate as well regardless of the effect the mixture or other variables may also have on it. to give you a good example of this jim wurth from sunoco race fuels. explains a perfect example is sunoco maximal which is our fastest burning fuel and coincidentally one of sunocos highest octane fuels at 116 r+m/2. a lot of pro stock teams rely on maximal for those sub-seven second runs. when they are turning 9000rpm or more the fuel has to burn pretty quickly to achieve complete combustion. do you really think that you can put this in your car and it will run ok you are also comparing apples to airplanes. this is a racing fuel refined for specific needs that are very different than that of automotive fuel. if you dropped the octane rating of this specific fuel it would burn even faster but at a cost of significant instability that is simply not worth the small increase in speed. however he also says aviation high octane fuel has a significantly lower burn rate being designed to run in engines running at 3000rpm and less. it is not a good idea to run avgas in a car. it would not be a good idea to put either one of these fuels in a modern fuel injected vehicle. either one would make the vehicle run like shit because the computer is not set up for the characteristics of either one of these fuels. but - add a small amount of leaded avgas to unleaded mogas and the octane increases significantly more than the mathemathical ratio would suggest without slowing the burn rate appreciably. but here is the key word appreciably. iow it will slow down the burn rate just not by a huge amount. the problem is that it doesnt have to be slowed down by a huge amount for a computerized emissions specific computer to react to it. one reason some people think octane and burn rate are related is because some most high octane fuels are lower in specific gravity below 0.75than regular unleaded generally 0.75 or higher which causes the engine to actually run leaner. you really need to stop talking out of both sides of your mouth. for any specific fuel type a change in octane reflects a change in the burn rate. comparing different fuel formulations and types is like comparing apples to grapes regardless of the octane ratings. when you can provide proof that for a specific fuel changes in the octane ratings have no effect at all on the burn rate then you win and perhaps you can then inform the manufacturers of the vehicles that they are wrong and should remove their bogus warnings as well but until then... burn rate of a lean mixture is slower than burn rate of a rich mixture. ok im not going to argue this or the reasons for it but lets put your claim to work. for a specific fuel type and or make an increased octane rating indicates a slower burn rate and nothing that you have said so far says anything different. if the computer in the vehicles with this warning are configured based on the burn rate of regular unleaded with tight emission tolerances the slightly slower burn rate of super will cause the computer to see a rich condition. since these computers are configured to control emissions over performance it will probably cut back the injector pulse width to lean out the mixture. now according to you that will slow the burn rate down even further and may make the computer think that the problem has not improved enough for the current reduction or may have gotten worse. either way now it will further lean out the mixture and / or increase the timing until the o2 sensor indicates that the emissions are within specifications. lean mixtures burn hotter and are far more unstable and likely to ping than the correct mixture and combined with advanced tim

From : Annonymous

on sat 11 jun 2005 012043 gmt tbone t-bonenospam@nc.rr.com wrote and yet even though you call it nonsense you were once again unable to disprove any of it. this is really getting to be a habit with you miles. instead you just ramble on making claims that show your complete lack of understanding of the operation of a modern computer controlled fuel injected engine. and yes if the slower burn rate of a higher octane fuel confuses the computer and causes it to put the engine into a lean run condition the number 1 cause of detonation in the link i gave you it in fact can cause it to ping. 93 octane fuel is far from ping proof and it is obvious that you simply didnt understand anything. you did however manage to prove me wrong on one point. i did say that i thought you were a bright guy but after this response....congratulations. you are assuming that burn rate and octane rating are related. also asuming higher octane fuel burns slower. this asumption is not necessarily true. the burn rate of a fuel is a measurement of the time required for complete combustion of the air/fuel mixture. the notion that octane ratings affect the burn rate of fuel is about 180-degrees from reality. burn rate is a function of several variables and the two are completely independent. although there is generally a correlation between octane ratings and burn rates the fuel mixture ratio has a lot more effect on burn rate than octane rating does. to give you a good example of this jim wurth from sunoco race fuels. explains a perfect example is sunoco maximal which is our fastest burning fuel and coincidentally one of sunocos highest octane fuels at 116 r+m/2. a lot of pro stock teams rely on maximal for those sub-seven second runs. when they are turning 9000rpm or more the fuel has to burn pretty quickly to achieve complete combustion. however he also says aviation high octane fuel has a significantly lower burn rate being designed to run in engines running at 3000rpm and less. it is not a good idea to run avgas in a car. but - add a small amount of leaded avgas to unleaded mogas and the octane increases significantly more than the mathemathical ratio would suggest without slowing the burn rate appreciably. one reason some people think octane and burn rate are related is because some most high octane fuels are lower in specific gravity below 0.75than regular unleaded generally 0.75 or higher which causes the engine to actually run leaner. burn rate of a lean mixture is slower than burn rate of a rich mixture. this is not uneducated conjecture - it is from fuel company experts. .