Looks like it's not a 7GR, EPC partially updated: 2GR-FKS

How many people are blowing up 1GR's due to ping.

Not many. Also there is a couple of TSB's that do manage the problem.

If someone is experiencing ping I'm the first guy to tell them to try 89 or 91 and see if it helps. That being said I don't think every Tacoma owner needs to start using 91 or believe they're going to damage the engine. I ran 87 in my engine before S/C and I never had pinging issues.

Anyways, getting back to how this started, making a general statement like you did saying that all DI engines should have 91 octane fuel or you will damage them is flat out wrong. It's statements like that which cause people who are looking for help on this site to rush out and blow money on something that isn't going to help them in any way.

 

I really wish you had the self-awareness to realize you argue for the sake of contention and just to disagree. I think you enjoy it. Most of your arguments just don't make much sense and are about as supportive and complex as: "My favorite color is Blue so f* you".

I am not being angry or anything, this is just getting tiring is all.

 

Look I am not arguing anything here, I would not run 87 on Di or Supercharged engine because I know it will do the damage. I seen it, I know.
Others can run on anything they want, its their engines, their cars.
Sterdog is the one trying to convince me that its Ok to run 87 in Di engine. Again I personally dont care what people run in their cars, because I am not the one that will have to deal with it.
Heck if Sterdog wants to use peanut oil as his engine oil, I believe its his citizen right to do so.

 

Just ignore him. In the end, it's a much better conversation.

 

Us guys and instructors from the automotive sector of college are very simple. The higher the octane rating of a fuel, the slower the rate at which it burns. I haven't studied the chemistry of combustion either, but it's not rocket science to understand how explosions power an engine.

Consider the velocities involved in the RPM an engine runs at operating and cold temperatures and then consider the fact that these all occur on metal-to-metal surfaces. Ultimately things wear out, internals wear out, and there's nothing that can prevent the eventual wear that an engine will incur in daily use no matter how well the lubricating oil is maintained and changed. It's not fuel that causes damage to an engine, it's the eventual wear that causes things to work their way out of alignment. My old 23 year-old toyota pickup ran a 22RE 4 cyl. with a misfire and fuel knock on acceleration with 87 octane, it didn't sound nice, but it still ran. Conclusion, the fuel wasn't causing damage based on the fuel usage alone, it was because my timing needed to be serviced and tuned up to account for the age the truck multiplied to in the years it faithfully served me.

I feel them.

 

Are you really trying to make fun of me for not wasting my money on premium fuel where it is not necessary? Or have you already broke into the Toyota mainframe and downloaded the technical manual that says "Premium fuel recommended in all of the DI engines, including the one's we don't make."

Give me some real hard evidence that ALL DI engines require Primium fuel when multiple independent automotive engineers and engine designers have said otherwise.

Here's a good blog article that sums up the different language automakers use to suggest or demand which fuel you use. There is a difference:

http://blog.consumerguide.com/do-i-really-need-to-use-premium-gas/

Yup. It's pretty simple how to understand slowing the burn though relates to less ping at advanced ignition timings. Only vaporized gasoline burns. So if you increase the energy required for the fuel to turn from atomized to vaporized, then you stop the fuel from burning until it encounters the pressure wave from the explosion caused by the spark. That pressure wave causes, well, increased pressure which causes heat which causes vaporization which causes the fuel to burn which expands the wave front which increases the pressure in the cylinder space which drives the piston down. With higher octane fuel you CAN increase the temperatures with more advanced timings in the cylinder and still have a uniform expansion of pressure in the cylinder. Can is a key word there because plenty of engines are designed for just 87, and if those engines don't have the timing to take advantage of the higher octane fuel then you get no advantage from running it. Sorry to use a big run on sentence there but I really don't want to get this into any more of a big deal than it needs to be.

I was going overboard because if you really want to get into it the speed at which the pressure wave moves, called blast pressure, does have some bearing on knock and with BlueT I like to cover all of the bases.

 

BTW here's a quote from an automotive engineer, found here, which shows more of the fact that the statement "DI engines require Primium always" is total BS:

Found here:

http://www.autoblog.com/2010/08/15/premium-or-regular-gas/

So if you design the engine properly for 87, you can run 87 no problem. Period. End of this stupid discussion.

 

Also to add the new 2016 Pilot engine is a DI engine with a compression ratio of 11.5:1 and it's also using 87 octane.

 

BlueT your the dumbest dumb person on here (always wanted to say that to someone) , your so god damn annoying and your rants are pathetic...move on buddy like everyone says here GTFO...you remind me of that horse fly I couldn't kill that was in my house for a while

 

If we all put him on our ignore lists, he doesn't exist.

 

Didn't know we can do that, just tired of scrolling thru garbage.

 

Yup, works great. Only time you have to read his mindless drivel is when somebody quotes his post

 

Acknowledging 1st amendment rights. Political. Ban.

 

Sorry,
You're.

 

Already did my 4 years of college, not here to spell check but thanks for being anal about it and watching my back

 

Seriously, if someone is nitpicking spelling on a Toyota Tacoma forum, you need to get a life. I don't care how smart you are, at some point you will mess something up when typing. Happens to us all. Now, let's get back to arguing with BlueT.

 

No problem I got you.

Not really spell checking if it's a grammatical error.

How redundantly ironic.

 

Umm congrats

 

Wasn't this discussion about an engine or something like that?