bigsyke

on my EJ8 sedan im at 16*, using 91 octane

On my EJ8 coupe im at 12* using 89 octane

What are you guys at?

ddd4114

Sorry, but what is the point of this thread?

Just use the lowest octane that will safely run the engine.

bigsyke

the overall point is to see what everybody else is running, havent seen a thread like that before.

And 2 is, when I put the timing on my d16y8 to 16, and ran 87-89, now my engine seems to smoke and loose coolant.

ddd4114

You probably experienced abnormal combustion and damaged your head gasket.

If your engine is stock, use the OEM base timing and follow the octane recommendation.

bigsyke

but how do you know with a higher octane, that your burning all of the fuel, and not dumping a crap load down past the rings? This is why I wanted to see what everybody was running. For instance if your running 16*, (+2 advanced- stock is 12*) if you would be dumping fuel down the walls into the oil with 91 octane......or even 14* with 91. I have no way to check for knock, and the y8 would retard the timing anyways 3* if it detects it.

ddd4114

If you don't know, why are you messing with it? Honda engineers selected the recommended octane and base timing for a reason.

95dxsir2

you'll get cylinder wash from being rich, not from advancing your timing, you'll get detonation from advanced timing, or pinging.if base timing is @ 12 degress advanced, keep it at that. unless your running race mix.

bigsyke

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95dxsir2 &raquo;</TD></TR><TR><TD CLASS="quote">you'll get cylinder wash from being rich, not from advancing your timing, you'll get detonation from advanced timing, or pinging.if base timing is @ 12 degress advanced, keep it at that. unless your running race mix.</TD></TR></TABLE>

sorry a bit confused, im running 2* advanced past stock. OEM is 12* +/- 2*, so im at 16* base.

if im at 16*, what octane do you recommend? i know its a question, but I have NO way to tell if im pinging, or detonating because of the knock sensor.

Im advanced because it cured my 2-3k flat spot hesitation.

ddd4114

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bigsyke &raquo;</TD></TR><TR><TD CLASS="quote">Im advanced because it cured my 2-3k flat spot hesitation.</TD></TR></TABLE>
In this case, advancing the timing is a band-aid fix for something else that's wrong. Double check your cam timing.

bigsyke

as if I jumped a tooth? ill check that, i dont have an adjustible gear.

but for ignition setting then, would it be best to have it at 14*btdc? (furthest mark on the crank pully) and run 89?

ddd4114

It would be best to simply run OEM base timing (12 degrees) and 87 octane, just like the manual suggests for your stock engine.