OK I've done a search on this topic and All I found was a bunch of people speculating as to what degree is optimal, and what kind of power gains can be expected......Also there seemed to be some sort of descrepency between results of timing advance, some said that you see power gains throughout the entire rpm range, and others said that it is actually a trade off, You gain a few horses down low, but lose some up high.

PLEASE, can someone who has actually done this procedure, tell me what the truth is ?

1. Is it really a trade off in power, or have you experienced timing gains throughout the entire rpm range ?

2. I know everyone says that + or - 2 degrees is optimal, but have any of you guys advanced it further ? What were the results ?

 

Never performed it on a B series. Ghettoed it on a Single slammer a while back by tilting the distributor. lol

Owner noticed a slight drop in topend power, but it wasn't enough to stop him from driving it.

Other than that I'm not sure on "EXACTLY" how far we advanced it.

 

On my TT supra with +2 intake and -2 exhaust I gained 4 mph in traps.

 

It depends on your setup.

Traditionally, a 2deg timing advance to 18 on mildly modded Integras shows a bit of a gain. Nothing you will feel though, IMO.

The results will obviously be drastically different for those running FI.

 

From 10 degrees to the stock 16, I gained 5whp throughout the powerband

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Six-n-twins &raquo;</TD></TR><TR><TD CLASS="quote">On my TT supra with +2 intake and -2 exhaust I gained 4 mph in traps.</TD></TR></TABLE>I think he was talking about the ignition timing not the cam timing

 

everything I've gathered suggests advance to 18 with a good 93+ fuel.

just listen for detonation.

 

Advancing mine from 16 to 18 deg BTDC gave me +2whp and +2lb*ft all across the board. Motor was stock back then and using 93 octane.

 

has anyone advanced the timing on a B18B1??? let me know. thanks.

 

On a stock or bolt-on motor, 18 is the safe limit. And FYI, it's still within factory spec. For B18A/B's some have recommended 91+ octane, if you do advance it. You might have to get higher octane if you're detonating/pinging.

Check out this old site.

 

If you advance the ignition timing too much it will cause ping. New cars have a knock sensor that retards the timing when ping is detected. The sensor is like a microphone. So I dunno if it's possible to advance the timing too much.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by koco &raquo;</TD></TR><TR><TD CLASS="quote">If you advance the ignition timing too much it will cause ping. New cars have a knock sensor that retards the timing when ping is detected. The sensor is like a microphone. So I dunno if it's possible to advance the timing too much.</TD></TR></TABLE>

Knock sensors only work after some pinging or detionation occurs, so that itself is bad. They also don't work in the higher RPMs, as the sound of the engine overpowers any audible detionation that the microphone can detect.

 

thanks alot guys