Timing advance?

ValgeKotkas

Supramania Contributor
Apr 14, 2006
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So what would be the best timing then(performance-engine life...)? Stock 12? Master drjonez?:icon_bigg
I just don't know what could be good fuel here, we only have 95 and 98 (some 92 too) octane. Quality unknown, but my father thinks these octanes must be totally different from your US ones:icon_razz
 

drjonez

Supramania Contributor
Mar 31, 2005
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ValgeKotkas said:
So what would be the best timing then(performance-engine life...)? Stock 12? Master drjonez?:icon_bigg
I just don't know what could be good fuel here, we only have 95 and 98 (some 92 too) octane. Quality unknown, but my father thinks these octanes must be totally different from your US ones:icon_razz

best timing? i guess it depends on your goals and what fuel you will be running. ideally, you'd want to run as much advance as you can without knocking.

yup, sounds like your gas is rated only by the RON number. here in the US it is (RON+MON)/2.
 

ValgeKotkas

Supramania Contributor
Apr 14, 2006
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Soo what would be your RON then(no clue what it means) so I could compare:icon_bigg thx!

Edit:wikipedia helps:icon_bigg They say your AKI is about 4-5 points lower than our RON

Hmmm, then let's say i run 87-91 octane(AKI) then, what would be the best timing? (goals - healthy engine, good response/performance)
 
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mkIIIman089

Supramania Contributor
Mar 30, 2005
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Stock minimum in our rating is 87, as printed by Toyota.

Now, this may sound like a bit of a newbie question, but what does this too advanced knock sound like? I have never heard it before, is it something you can hear without monitoring equipment? Wouldn't the TCCS just yank the timing back if it detected it?
 

Facime

Leather work expert
Jun 1, 2006
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lts of people still call it "ping" as opposed to "knock" cause it sounds more like a ping. Ive always referred to the sound of a diesel engine as knock, and the sound of a small block chevy with flat cam lobes as a ping. What Im trying to describe is that while rod knock has that hollow deep tone, ping (or predetonation) is a much higher sound and alot like valve clatter or steroids.
 

Nick M

Black Rifles Matter
Sep 9, 2005
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mkIIIman089 said:
Stock minimum in our rating is 87, as printed by Toyota.

Now, this may sound like a bit of a newbie question, but what does this too advanced knock sound like? I have never heard it before, is it something you can hear without monitoring equipment? Wouldn't the TCCS just yank the timing back if it detected it?
If you have a good signal wire and the knock sensor is in good condition, you won't hear much. With horrible gas, the ECU will have a difficult time adjusting, but the car will run like shit anyway.
 

Ma70.Ent

Supramania Contributor
Feb 26, 2006
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Sorry to bring a dead topic but...

Do certain modifications cause better gains out of timing? IE: Having bolt ons will give more gains from timing advance as opposed to a stock supra?
 

Kai

That Limey Bastard
Staff member
Just to revive this dead topic - when Darket (ed) from the UK Mk3 Forums did a once over on my car the other week, he found that the timing was set to 8 degrees, so no wonder it was running like a bag of crap and sucking down fuel at a rate of knots....

Since changing it to 12' though, fuel economy has improved as has driveability, and in 2nd gear now, its SCARILY noticable from 3000rpm and up...