i read about it...
and 87 Octane will give the same performance as the 89 Octane?
10.4:1 isn't THAT high of a compression ratio i believe?
any experts can give me some tips about this?
They say any higher than 87 Octane isnt necessary
is this true, suggestions needed!!

 

Honda says "Premium Fuel Only"

You will get too much pinging with 87.

#13000

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlueIntegraBoy &raquo;</TD></TR><TR><TD CLASS="quote">Honda says "Premium Fuel Only"

You will get too much pinging with 87.

</TD></TR></TABLE>

is this for all honda motors?? or just the ones with vtec?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by imbrzyant &raquo;</TD></TR><TR><TD CLASS="quote">i read about it...
and 87 Octane will give the same performance as the 89 Octane?
10.4:1 isn't THAT high of a compression ratio i believe?
any experts can give me some tips about this?
They say any higher than 87 Octane isnt necessary
is this true, suggestions needed!!
</TD></TR></TABLE>

yes, 10.4:1 is a high compression ratio. i use 93 octane all day long.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slo_hatch &raquo;</TD></TR><TR><TD CLASS="quote">

is this for all honda motors?? or just the ones with vtec?</TD></TR></TABLE>

mainly for high compression honda motors.

 

Octane isn't really about the performance level of gas. It determines how volital(flamable) the gas is. If it is too volital on a high compression engine, the gas will pre-ignite Before the cylinder gets to TDC. Causing somewhat of a bang refered to as pinging. A knock sensor is desinged to combat this, they can only compensate much. (I'm not sure if that engine has a knock sensor or not). Bottom line, unless your engine is modified, use what Honda recommends.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlueIntegraBoy &raquo;</TD></TR><TR><TD CLASS="quote">#13000</TD></TR></TABLE>

 

93 Octane.
damn thats a chunk of $$ from your pocket.
haha

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by philosofy1 &raquo;</TD></TR><TR><TD CLASS="quote">

mainly for high compression honda motors.
</TD></TR></TABLE>

ok good so i dont have to worry with my d15b8... lol

 

10.4 is "high" so people say - but it's not that high.

A typical Y8 runs what, 9.6? CR and that can be dealt with fine on 87 octane gas - no problem.

You should be able to run it fine on mid-grade, 89 or so. It's real simple - if your engine misses while using a lower grade gas - step it up a notch.

 

IT is ok for 89 Octane on my B16A?
thats what I've been pumpin for the longest.
I have minor mods, sai/h/e, ngk spark plugs.
I dont really think 91 Octane would be necessary
unless I were to add a forced induction into my engine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by imbrzyant &raquo;</TD></TR><TR><TD CLASS="quote">IT is ok for 89 Octane on my B16A?</TD></TR></TABLE>
Honda says Premium fuel only for B16A2/A3 engines. But there's probably some fudge room there to cope with the lower quality US fuel.

If you're not pinging constantly, if you're running smoothly, then you're fine.

I know my B16A2 doesn't run well with 87, but I don't know how it runs with 89. Took 11 years for me to put in 87 by accident.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">10.4 is "high" so people say - but it's not that high. A typical Y8 runs what, 9.6? CR</TD></TR></TABLE>
Just confirming... USDM B16A2/A3 is 10.2, D16Y7/D16Y8 is 9.6, JDM B16A is 10.4.

 

87? damn man I got a SOHC and I still use 93, on all of my cars in my household I use 93, remember you get what you pay for

 

93 on a sohc.. waste of your money. Seriously.
I hear that too high of an octane for your motor is actually bad for your catalytic converter... and it's wasted too.

Butt dyno says 87 vs. 89 is good for a horsepower.. No noticeable difference between 89 and 91.. my D16y8 ( 9.6:1 ratio ) just doesn't take advantage of it.

Waste o' dollars.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by imbrzyant &raquo;</TD></TR><TR><TD CLASS="quote">93 Octane.
damn thats a chunk of $$ from your pocket.
haha</TD></TR></TABLE>

yup $3.35 a gal for 91 in socal

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 01_CLtypeS &raquo;</TD></TR><TR><TD CLASS="quote">

yup $3.35 a gal for 91 in socal </TD></TR></TABLE>

Wow, not that much of a difference here in Hilo, HI

$3.39/gal (92 oct)

 

Dont waste ur money on anything higher than 87 it really wont make a difference

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EJ ITO &raquo;</TD></TR><TR><TD CLASS="quote">87? damn man I got a SOHC and I still use 93, on all of my cars in my household I use 93, remember you get what you pay for</TD></TR></TABLE>

And what exactly is that? The ability to stand at the pump and look cool because you pump 93? I bet you can sure feel the difference in power with 93....

11.5:1 is the highest I've seen in a built B16A with 91 without pulling too much timing. GSR's can get away clean with 89 from what I've seen and heard. I've always pumped 91 in my B16A simply because the US Si called for "Premium Fuel" which is stated as 91 octane. I've heard a few poor luck stories with B16A's running 89 and having stumbling performance as the RPM increases. A friend of mine with a 95 B16 Civic has VTEC disengage after 6500rpm or so. 91 and he never had a problem, but the man tried to cheat when he could, and its not working for him.

When engines clog up with carbon, higher octane fuel can be required to run normally without ping.

If you have boltons, stick with what the owners manual calls for, or something equivalent in the states if specs can't be found.

 

i've always run 94 octane on my b16a. i put in 89 once and it sucked for performance.

 

so what about a hx since its lean burning?....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EJ ITO &raquo;</TD></TR><TR><TD CLASS="quote">87? damn man I got a SOHC and I still use 93, on all of my cars in my household I use 93, remember you get what you pay for</TD></TR></TABLE>
You need to read up on octane.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NOFX &raquo;</TD></TR><TR><TD CLASS="quote">
You need to read up on octane. </TD></TR></TABLE>

https://honda-tech.com/zerothread?id=2038924

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spray_bombed &raquo;</TD></TR><TR><TD CLASS="quote">so what about a hx since its lean burning?....</TD></TR></TABLE>

I have a HX right now....

Anytime I have a SOHC no matter which one it is, 87 octane, and no oil changes.

Seems to be fine for D series.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spray_bombed &raquo;</TD></TR><TR><TD CLASS="quote">so what about a hx since its lean burning?....</TD></TR></TABLE>

Who cares if it's lean burning or not? It has solely to do with the compression ratio - whether be it be NA, nitrous, or boost.

You can use 87 in a HX no prob.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94LSVCIVICEX &raquo;</TD></TR><TR><TD CLASS="quote">Dont waste ur money on anything higher than 87 it really wont make a difference</TD></TR></TABLE>

Nope, not at all, unless you're preigniting because your CR is too high.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Neptronix &raquo;</TD></TR><TR><TD CLASS="quote">93 on a sohc.. waste of your money. Seriously.
I hear that too high of an octane for your motor is actually bad for your catalytic converter... and it's wasted too.

Butt dyno says 87 vs. 89 is good for a horsepower.. No noticeable difference between 89 and 91.. my D16y8 ( 9.6:1 ratio ) just doesn't take advantage of it.

Waste o' dollars.</TD></TR></TABLE>

SOHC vs DOHC don't mean **** - ask bisimoto if he can use 87 octane in his old CRX daily... It has to do with your compression.

In any event, you're right about too high of an octane being bad because it burns inefficiently and ownz ur catalytic converter - but as far as "needing" X octane, ur right.

I don't know, cats are cheap enough, I've come to the conclusion that I rather buy a 30 dollar "high flow" ebay cheap POS cat every year or 2 than drop 200 on some name-brand one. And I'll completely eliminate it if I can get my hands on an O2 simulator...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">
I don't know, cats are cheap enough, I've come to the conclusion that I rather buy a 30 dollar "high flow" ebay cheap POS cat every year or 2 than drop 200 on some name-brand one. And I'll completely eliminate it if I can get my hands on an O2 simulator...</TD></TR></TABLE>

everytime you remove your catalytic converter, mother nature kills a kitten

 

well not really waste of money, 2.95 BP gas 93 octane in florida