Advance timing

i went to look at the ignition timing laser gun... they are costly... cheapest is $50, up to $100... i dun mind buying one but all of them look so cheap (in quality wise) for that kind of price and there is none like the one in this link http://www.sohchonda.com/ipw-web/bul...ndex.php?pid=5.

someone mentioned in this thread only costs $20.... where can we get them from???
i ve gone to supercheap auto, repco, autobarn....

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Originally Posted by edw-R

I think it has a optium point of the timing. Who know? Different car use different fuel and has different compression.
For the best timing of each car, go to highest timing point that without pinking. That's my opinion. Correct me if i'm wrong.

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usually, you're going to tune timing to best mean torque... that requires a dyno though.

If you advance to the point of detonation, I'd retard by a degree and a half to two for safety reasons.

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Originally Posted by saxman

usually, you're going to tune timing to best mean torque... that requires a dyno though.

If you advance to the point of detonation, I'd retard by a degree and a half to two for safety reasons.

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At least a two degrees... In some cases, there may be MANY degrees of timing between MBTT and knock, and even then, tuners may retard a few degrees from MBTT.

If your not going to use a dyno, timing maps IMO should be very conservative, unless you don't care about your engine. With FI, one knock at high boost/rpm is all it takes and you have a nice hole in your piston, or a lovely bend in your rod.. Nice for a wall ornament, but not for an engine :D

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Originally Posted by string

At least a two degrees... In some cases, there may be MANY degrees of timing between MBTT and knock, and even then, tuners may retard a few degrees from MBTT.

If your not going to use a dyno, timing maps IMO should be very conservative, unless you don't care about your engine. With FI, one knock at high boost/rpm is all it takes and you have a nice hole in your piston, or a lovely bend in your rod.. Nice for a wall ornament, but not for an engine :D

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yah, I know... my point was that without a dyno, you're kinda shooting in the dark, and going until the point of detonation and stopping there isn't the way

Ignition timing, for most purposes can have base timing advanced by 2 degrees(which is within Honda's specifications) to take advantage of 98 octane fuel. For example, using Toluene, I can advance timing by 4 degrees past my 'SAFE' 98 octane point without suffering knock. Toluene is not an over the counter purchase anymore, we have a few drums stockpiled for personal use only.
Of course using a 'racing brewed' fuel is always going to give a larger power gain with more potential energy from timing adjustments. Nitro-methanol is one of the best with a rating of around 200+ octane and insane power outputs. Shame it requires 6:1 air:fuel rations (very rich miture) at $20 a litre...