100 octane in a DII?

[p m]

PM, you generally maintain decorum...

I am trying, but sometimes I regret it.

Why should you take crap from the "noobs?"
Because the knowledge of a subject has absolutely no relationship with a number of posts a person logged in.
I am yet to see a wrong statement from Mr.Lefebvre, and that leads me to believe he knows something.
And I've seen plenty from you, typically offered with the "I wheeled class 8+ trails" crap.
Which leads me to believe that, while you may come across right every now and then, you have a shitload to learn, and there's no reason to come off the way you did - nearly the first on this thread.
This is exactly what Jack said, just in much more concise way. I saw absolutely no racial slant in his post.

 

[gmookher]

kids, relax, its not turbo charged

dumbness. put in super unleaded and go wheeling

pour the 100octane into your tuner car, this thread is over

This post above was not to instigate anyone..
this, on the other hand...

Go back to India.

what was he looking to get as a response? Thank you JSQ sir, come again?

enough of his cryin..

I simply didnt and still dont think its worthwhile trying to squeeze out a few extra hp by running race fuel, which is what 100/108 octane is.

Below, you can see where he starts with my not being a powertrain tech at an OEM, and then his didactic quiz of acronyms and testingt my friggin knowlege/experience...

No, no, you have no idea. Are YOU an OEM trained powertrain engineer?

I never said max efficiency comes from max advance. I said max efficiency comes from Mean Best Timing. Mean Best Timing is often lower than Borderline Knock. That means the efficiency of the engine is knock limited. Running higher octane may let you achieve higher octane than you could get on 91.

Now, if YOU have tried it, and got nothing, that's useful input.


Dude, Please.
Without looking it up, what is BMEP? When experiencing detonation, what happens to the EGT? Why is EGR used?

dude please NOTHING..frankly, my post suggesting he doesnt know had one main point to it, as, per his previous posts, it seemed he wanted to see how much advance the stock ecu would push to with 100 octane instead of 93- that Max efficiency is NOT = to max advance

he's a trained factory tech- no ENGINEER he really does know this(?)

No, YOU have no idea, I've got plenty of time under my belt using higher octane fuels, and plenty of time under the hood of turbo charged cars, if you dont, be ware what you post. Max efficiency is NOT = to max advance; max advance is determined by how much she'll take without knocking

Thats why I am running either 90-91 octane above 4000 feet or 91-93 at sea level.
Hardly a motor worth sunoco's 94 let alone anything higher.

detonation, timing, spark advance, these are terms you may wanna look up before you make the dweb police come at you....knock sensors, too

it makes alot of difference in a turbo car where detonation is an issue. in my d2, with low assed compression v8, it matters not, but you can eagerly wait to see what the OP gets when running 100 octane. there will be no added oomph.

Things didnt get ugly till he busted out the logic behind wanting to run 100 octane, at which point i dont care who pays your salary, you've got to be on crack to think running some tremendous amount of advance and high test fuel on a d2 is gonna a) make more power b)make it more efficient per gallon c) both of the above:

That means the efficiency of the engine is knock limited. Running higher octane may let you achieve higher octane than you could get on 91.

above, i know he meant some other word than octane there, but it doesnt matter what word, whether he meant efficiency, advance or power, each has a sacrifice, and a pitfall, either egt, emissions, knock, or all of the above

and then came jupiter..

I dont really think it matters.

run 100 octane and boast about it

.. hate non citizens, hate immigrants, like it matters?

got a problem with me, my wheelin or my posts?

tough shit. fuck off.

on with the show...

Insert "I wheeled class 8+ trails" crap.

Insert JSQ squeaking away..
and let the ford pro mod my rover while his is stock.

uhhuh..

 

[rovercanus]

I am yet to see a wrong statement from Mr.Lefebvre, and that leads me to believe he knows something.

Peter, you should read more of his posts. He's an ass clown of the first degree.

 

[eddie potato]

This thread


edit: gmook, you sir need to disconnect your internet and go check what the weather is like ouside. It may calm you down.

 

[Mongo]

this entire thread is fucking stupid...funny how may engineers and engine management experts we now have on board...

 

[Two Cold Soakers]

this entire thread is fucking stupid...funny how may engineers and engine management experts we now have on board...

My uncle was a fuel systems engineer for fomoco and even has abstracts posted on the intrawebs. He gave me a 2bbl carb to take apart when I was a kid. Does that count?

 

[jhmover]

No, it has to be at least a 4bbl.

 

[jimjet]

this entire thread is fucking stupid...funny how may engineers and engine management experts we now have on board...

And
MOST of the , expert / engineers , have pimples and have not reached the drinking age yet.

 

[DCDisco]

You know, in the beginning we were given two ears and only one mouth

Then we learned to read and write, given two eyes but only could write with one hand

Internet messed this perfect ratio up, two eyes, yet we type with both hands.

 

[JustAddMtns]

Hall of fame?
I wish Ho or Axel simply deleted the entire thread.

x2:ack:

 

[R_Lefebvre]

This post above was not to instigate anyone..

Oh, the word "assclown" is just a commonly used term of reference in the english language right? It's hillarious how one person can insult another person's natural born base intelligence level, and that's fine. But... insult their cultural background and... Look out! :bs:

Things didnt get ugly till he busted out the logic behind wanting to run 100 octane, at which point i dont care who pays your salary, you've got to be on crack to think running some tremendous amount of advance and high test fuel on a d2 is gonna a) make more power b)make it more efficient per gallon c) both of the above:

You're having real difficulty with this concept I can see. The maximum power/effciency timing advance on an engine is often lower than the knock limit on regular pump gas. Running higher octane will allow you to advance the timing beyond the regular knock limited ignition timing, and approach the Best Mean Timing. We don't know where BMT is. You can't tell me that the BMT just happens to be equal to KL on 91.

The truck has a knock sensor. It automatically retards timing when you run low octane to avoid detonation. Next time you fill up with premium, it automatically advances timing again, but may still be holding low from BMT because the KL of 91 is still lower than BMT. If one were to put in 100 octane, it may advance the timing further, up to the BMT. We don't.

I mean what, you think the truck has a "fuel quality sensor" that magically measures the octane before combustion? NO! It uses the knock sensor. It retards timing when it senses knock, it advances it when there is no knock. If you put something better than 91 in there, it will keep advancing until BMT or some other limiter they have programmed in, and apparently NOBODY knows what that is right now.

above, i know he meant some other word than octane there, but it doesnt matter what word, whether he meant efficiency, advance or power, each has a sacrifice, and a pitfall, either egt, emissions, knock, or all of the above

Yes, the word should have been efficiency.

Again, what sacrifice, other than the extra money a tankful of gas would cost?

EGT? AAAA! Wrong answer!

Emissions? AAAA! Wrong answer!

Knock? WTF, are you really that FUCKING retarded that you would suggest that a knock sensor equiped vehicle would advance the timing until it started knocking?!?! If you're that fucking stupid, how the fuck do you not forget to breath?

Peter, you should read more of his posts. He's an ass clown of the first degree.

Only because you're just as dumb as Mookher here. The only major misstep I've had is saying "best handling car ever" and later corrected myself to say "one of the best handling FWD cars ever". Sorry if I get a little overzealous about a car I've got a lot of blood sweat and tears in.

Mookher is all excited about his 8+ truck. I think it's a pretty pathetic vehicle in the grand scheme of things, but I let him get away with it because it's his baby.

 

[gmookher]

I let him get away with it because it's his baby.

what an asshole...

so you gonna build up that truck or ya just here to talk shit?

 

[Mongo]

:rofl:

 

[R_Lefebvre]

And
MOST of the , expert / engineers , have pimples and have not reached the drinking age yet.

I gotta think that's referring to me, cause I don't see any other expert/engineers around here.

I'm 31, I have a wife, a kid, a dog and a nice house. I graduated with a BASc in Mech Eng from the University of Ottawa in 1999. I worked at Ford Powertrain from Jan 2000 to October 2003. I worked at Dana's Engine Fluid Management Group from November 2003 until Febuary 2006. I then went to Litens Automotive, a division of Magna, where I designed the Front End Accessory drive of the 2007 Defender, as well as supporting current production Land Rover and Jaguar product.

I was going to post photos of proof but... meh, if you don't believe me from the TECH I've written, you'll probably just suggest I photoshopped the photo anyway.

 

[R_Lefebvre]

what an asshole...

so you gonna build up that truck or ya just here to talk shit?

No, I'm not going to sink $1000's of dollars into a truck so it can still be slow and incapable, my wife leaves me and I have to try to sell it at a massive loss.

I will modify it lightly to enhance it's original intentions, which is to use to transport my family on rough roads and easy trails for camping and exploration. It will also be used to haul much more capable vehicles around to do the hard trails.

 

[gmookher]

I gotta think that's referring to me, cause I don't see any other expert/engineers around here.

I stand corrected,
I meant

"Asshole Expert"

 

[R_Lefebvre]

I stand corrected,
I meant

"Asshole Expert"

That's better. :bigok:

 

[gmookher]

No, I'm not going to sink $1000's of dollars into a truck so it can still be slow and incapable

ha, my rig is slow, but quite capable, and I've sunk thousands into it, and will gladly sink thousands more..

easy trails for camping and exploration. It will also be used to haul much more capable vehicles around to do the hard trails.

Enjoy your easy trails. Looser. I mean poser. I mean ass clown, nah I choose D, all the above..
LOL..
A disco is not the 1st rig that comes to mind for towing, but you'd know better you're the expert here.

btw, what more capable vehicles do you own? What forums are you on regarding those rigs? didnt see any pics in your profile or mention of them..

and the low blow aimed at my divorce, man you've got class...


they allowed you to reproduce??

 

[Mongo]

I gotta think that's referring to me, cause I don't see any other expert/engineers around here.

I'm 31, I have a wife, a kid, a dog and a nice house. I graduated with a BASc in Mech Eng from the University of Ottawa in 1999. I worked at Ford Powertrain from Jan 2000 to October 2003. I worked at Dana's Engine Fluid Management Group from November 2003 until Febuary 2006. I then went to Litens Automotive, a division of Magna, where I designed the Front End Accessory drive of the 2007 Defender, as well as supporting current production Land Rover and Jaguar product.

I was going to post photos of proof but... meh, if you don't believe me from the TECH I've written, you'll probably just suggest I photoshopped the photo anyway.

you'd be amazed how many engineer's there are on the board...

 

[R_Lefebvre]

you'd be amazed how many engineer's there are on the board...

Oh, I know I'm just one of many. You don't see the others arguing against me, however.

and the low blow aimed at my divorce, man you've got class...

You call it on yourself.

All you've ever done, since I've been here at least, is try and put down all the people with a lower post count than you to try and gain cred with all the more experienced people here. So now you're getting it from both sides. The real experts around here hate you for your pretensiousness, and the newbs are fighting back because in too many cases, you're your attacking them when you are the one that's wrong.

btw, what more capable vehicles do you own?

We've been over this before.