honda_k20a

iTrader: (1)

Yes I'm sure everybody has read this topic too many times but I'm just too freaked out right now to search.

Anywho, I accidentally put in 87 octane from an empty tank. I put in 20L and that's when I realize it was the wrong octane. I quickly filled in the rest, about 15-16L of 94 octane and I filled in a bottle of Octane Booster.

Do you think its enough to make atleast 91 Octane?? Or will I be fine with the 87/94 and octane booster|?


HELP

kp

I'm thinking you'll be okay. Just to be safe, run it down to 3/4 tank and fill it with 94 again.

honda_k20a

iTrader: (1)

So i got paranoid and i put in another booster, even if it jsut boost 1 octane rating.

blkegcoupe

its not going to hurt the motor, if your that paranoid just drive it normally and don't hit vtec.

blkegcoupe

unless your boosted or all motor.

BlackDeuceCoupe

You should be just fine! Won't hurt a thing...

I've been running 87 octane in my B16A2 for over 6 months with no problem - 500 miles a week, give or take.

Matter of fact, I've been adding acetone to my 87 octane fuel for a couple of months... and it's running better than ever!

I'll never go back to 'super' unleaded. It's kinda like throwing quarters in a wishing well, IMHO!

andoxviii

iTrader: (1)

x2

Hmmm, I disagree. I notice a difference between 87 and 94 in my Y7...albeit a small difference. Feels smoother and his quicker throttle response. Don't get me wrong, though...its still as slow with 94 as 87.

honda_k20a

iTrader: (1)

Also I have another question:

I recently bought this car and I know the guy who put in new piston rings, and do a valve lap. I'm suppose to break it in for the first 1000KM and I'm not sure if I did a good job. For the first 300KM, I did a bit of mixed driving, shift at 3000rpm, and as high as 5500rpm. I continue doing 3000rpm shifts, until I read online that I should NOT do 'constant' speed or constant rev shifts, so I did some 3000, 3500, 4000rpm shifts. After about the first tank of gas (400KM, which total is about 600KM) I did the first oil change. The oil seemed to be clear, and after that oil change, I hit VTEC and up to 7000rpm once or twice. Now I'm about at 1000KM, doing shifts at 3000, and sometimes driving hard up to 7000rpm.

Did I do a decent job in breaking it in, or will I be screwed later on? (I'm a paranoid ma faka)

BlackDeuceCoupe

Sounds like you did fine!

I dunno...

I break my engines in hard, they last forever, make good power, and get great mileage.

My theory is... break 'em in slow and you'll end up with a slow motor. Break 'em in hard and you'll have a fast motor. Works for me!

On the 'constant speed' thing...

I try to avoid this as much as I can. Why?

When you're on the gas, it pushes the piston rings out against the cylinder walls and beds them in, if you will. When you let off the gas, it sucks a small amount of oil past the rings, back into the combustion area for lubrication, sooo...

When I'm breaking in a motor, I'm either on the gas or off of it - I don't hold it at a 'constant speed'.

IMHO, the worst way to break in a motor is to drive it at a slow, constant speed...

Anyway, that's how I do it. Take it for what it's worth...

BlackDeuceCoupe

Yeah, there's definitely a difference in my B16A2, but...

My ride starts up better with 87 octane, runs better, and gets the same mileage, albeit a little 'edgy/schizo' because of the high compression.

The ancillary benefits of adding acetone are, it "feels smoother and has quicker throttle response," it gets better fuel economy, and a $2.00 bottle of 100% acetone fingernail polish remover will last you for a couple of months.

Put another way, 87 octane gas with acetone runs better than straight 94 octane - it's like a better grade of 'super' unleaded.

Having said that, it's kind of a PITA measuring the acetone and adding it at the pump. It's toxic to humans and will eat the paint off your car, if you spill it!

I don't know how women get away with removing their fingernail polish with this stuff, without poisoning themselves...

Maybe I'll get tired of doing this some day, but for now, I'm a happy camper. I can't see switching back any time soon!

EDIT

BTW, here's my 'kit', if you think I'm BSing you. I add 2-3 ounces per 10 gallons.

LoL! This stuff will bump up your octane, honda_k20a...

honda_k20a

iTrader: (1)

lol, I'll keep that in mind but I think that might be too extreme for me. I'm a bit relieved after knowing it'll be alright with the mix, and especially with the two octane boosters - whether it not it boosts 5-6 octanes, 1 or 2 will be fine for me since I'm sure 87/94 makes 89 atleast.

Vindicator9000

That's why your car has a knock sensor. It shouldn't hurt it to run a tank of 87 through it.

98civdx

Octain booster is pointless it does noithing,
why pay $5 to raise it 1 point? its cheeper for plain gas.
you be fine.., just dont beat on it,
+ you put the higher stuff in after, you motor wont know the difference.

instructor74

This post got me thinking and looking into adding acetone to fuel. Here is a link that had some really intresting data on how acitone effects fuel. Acetone is not an octaine booster it changes the surface tention of the fuel and allows for better burning of the fuel
http://www.pureenergysystems.com/new...00069_Acetone/
another point of view
http://neubranderinc.com/blog/2007/0...soline-busted/
as said it loks like the only way to test it is for yourself.

BlackDeuceCoupe

Exactly!

Look, I'm a total skeptic when it comes to stuff like... adding nail polish to gasoline. Believe me on this!

I didn't want it to work! I wanted to use my experience as proof that acetone doesn't work.

LoL! Matter of fact, I'm still skeptical!

Having said that, there is no doubt in my mind that acetone increases the octane - maybe not as much as toluene - but it does!

I've read this on several sites, but there's no reason to post links. All it will do is start an argument...

From time-to-time, I'll quit adding acetone to my gas. The 'smoothness' goes away, and my mileage decreases - by as much as 10%, sooo...

If you really want to test the theory, run acetone for a while then stop using it for a few tanks!

Heh!

You'll see...

Mikes2000civicsi

Scientifically:

Isooctane burns with a minimal knocking and is given an octane rating of 100. This is in contrast to heptane, which burns with much knocking and is given an octane rating of 0. Thus, a gasoline that burns with the same amount of knocking as a mixture of 92 percent isooctane and 8 percent heptane is classified as a 92 octane gasoline.

Mathematically:
20L of 87=17.4L of 100 octane
15L of 94=14.1L of 100 octane

(17.4L+14.1L)=31.5/35= .9 octane off 100 Which is a Rating of 90
Plus 1 qrt of an 104 octane booster=31.5+1.04/35.95L= an octane rating of 90.51

I think your pretty safe seeing that its only .49/1 octane away