advanced timing today - Honda Prelude Forum

illusion · 02-17-2002, 03:48 PM

today i advanced my timing about 5 degrees. so far there is no pinging or detonation that i can notice.. although i dont know what to really look/hear for. i feel better response down low, maybe a tad top end. the gains are probably negligible, but as look as i think its faster then thats what counts. :P

prelude2005 · 02-17-2002, 03:52 PM

damn i would....Roger (ludeconduct) told me that it is very notiable gain...he says to use 93 octane and its awsome...let me know how it runs...

im scared to do it hehe

illusion · 02-17-2002, 04:09 PM

heh i was scared to do it too. i borrowed a timing light from my friend and we did it today. we did a valve adjustment last weekend and replaced plugs/wires so my car is almost good to go for the spring season.

oh btw, my taillights are apart in my room waiting to be cleared. yay =)

prelude2005 · 02-17-2002, 05:34 PM

Quote:

Originally posted by illusion
heh i was scared to do it too. i borrowed a timing light from my friend and we did it today. we did a valve adjustment last weekend and replaced plugs/wires so my car is almost good to go for the spring season.

oh btw, my taillights are apart in my room waiting to be cleared. yay =)

sweet, let me know what you feel with 93 octane in your tank

H22Luver · 02-17-2002, 06:04 PM

I Advanced my timing and shaved .3+ in a 1/8 mile track

i didnt use a timing light. Had it advanced for about 5 months and a drunk driver hit me 2 weeks ago totaled my car but im buying another one this weekend

I didnt use 93 Oct either i used 89. I had no problems at all with advancing my timing.

Lude_conduct · 02-17-2002, 06:19 PM

For those who have advanced your timing: If you used a timing light, how far did you crank it? I'm running at about 19 degrees BTDC, and I noticed better top-end pull as well as mid-range once the ECU provides timing advance (very noticable). I only use 92 octane fuel with my car because the H22A uses a knock sensor, and if it detects pinging, it will retard timing before the human ear could detect detonation.

thatchmaster · 02-17-2002, 06:34 PM

Quote:

Originally posted by Lude_conduct
For those who have advanced your timing: If you used a timing light, how far did you crank it? I'm running at about 19 degrees BTDC...

I used a light, and set mine to 19btdc as well.

-Erik

H22Luver · 02-17-2002, 06:59 PM

Quote:

Originally posted by Lude_conduct
For those who have advanced your timing: If you used a timing light, how far did you crank it? I'm running at about 19 degrees BTDC, and I noticed better top-end pull as well as mid-range once the ECU provides timing advance (very noticable). I only use 92 octane fuel with my car because the H22A uses a knock sensor, and if it detects pinging, it will retard timing before the human ear could detect detonation.

Lude Conduct check your PMS!

JDM Lude · 02-17-2002, 07:07 PM

Quote:

Originally posted by Lude_conduct
For those who have advanced your timing: If you used a timing light, how far did you crank it? I'm running at about 19 degrees BTDC, and I noticed better top-end pull as well as mid-range once the ECU provides timing advance (very noticable). I only use 92 octane fuel with my car because the H22A uses a knock sensor, and if it detects pinging, it will retard timing before the human ear could detect detonation.

mine is the same as yours - and the timing advance at 3K RPM is almost like a second VTEC engagement - huge difference. I'm considering trying to go to 20 degrees. One other H22 guy ran 20 degrees and said he had no problems, and he was on 91 octane.

***edit: but then again he was on a H22A1***

illusion · 02-17-2002, 09:15 PM

i always use 93 octane. nothing less.

i measured the distance between the mark that i made.. about 5mm. so i guess thats approximately 5 degrees? so im probably around 20 deg btdc.

but yeah, i feel it more in the power range before i hit vtec.

Absolut · 02-17-2002, 09:18 PM

Is there a way to hook up an light to the knock sensor, so you could see when a ping was detected?

Crate · 02-17-2002, 09:28 PM

does advancing your timing make you run slightly richer, or lean you out slightly?

Fast&furiuslude · 02-17-2002, 09:34 PM

im interested to do it but i need more info. like is it worth it in the long run

Crate · 02-17-2002, 09:37 PM

i did it along time ago on my accord, just doing it w/out a light, adjusted it like.5 mm or some ****? i cant remember, i was 18. but i did that, and i ran it for over 2 years. heh. no harm (that i knew of)

But i'm trying to remember if it leans it out or makes it run richer? i'f im not mistaken, it makes the Discharge of the spark happen sooner? or faster? so it burns a larger % of the fuel???

i'm blurry on the concept.

Fast&furiuslude · 02-17-2002, 09:51 PM

i believe it would run richer cause all my friends that has done it has smoke comin out of thier exhuast when they go WOT. i might be wrong

Lude_conduct · 02-17-2002, 11:00 PM

Timing advance has nothing to do with the A/F ratio; what we're doing is advancing the distributor which makes the spark discharge earlier. In my case, 19 degrees of crankcase revolution BEFORE the piston reaches top dead center. Of course, there is always too much of a good thing, and with spark advance, you may get predetonation or lose power by introducing the spark too early. In stock form, the timing is set to around 15 degrees BTDC.

Crate · 02-17-2002, 11:32 PM

i understand that, so the spark happens sooner as the piston travels up (during compression)... how exactly does that improve by advancing a few degrees... aka making it det alittle sooner.... at higher rpm's i can see how that would help i guess?

W1thStyle · 02-18-2002, 01:05 AM

any instruction on how to advance the timing on the h23 please ?

im trying to do mine but i have no idea how much or how to do it...

illusion · 02-18-2002, 07:03 AM

do a search.

'92Sigrl · 02-18-2002, 09:04 AM

damn mine is only advanced like 3 degrees! I noticed difference low-end.

H22luvr...why are you only using 89??