So I notice the dizzy can be advanced or retarded on these d-series engines... does anyone know the bet way for performance? Usually it's advanced (spark comes a little before TDC)... any help would be apprecitated.
-Matt

 

its a good question dude, i wanted to know too the timing setting for carb and injection is it the same?

 

I'm not sure... I don't think Honda made any civics with carbs since, oh, the mid/late 1980s. It'd be neat to know. Assuming the fuel/induction system is working properly, I'd assume it's the same: advanced as much as possible without detonation at WOT (wide open throttle).

Of course higher octane fuel burns at a slower rate, so tuning can be a little more aggressive with that.

 

Sure you can advance the static timing, but you'll only get marginal gains. The trade off for that, and having to run premium fuel, wouldn't make it worth it to me. You're better off getting a chipped ECU, but that's only after you've got supporting mods.

 

ecu for carbs? are sure mate?

 

Figured OP was talking FI since he mentioned D-series in the 92-00 forum. Where did you get carbs from?

 

Generally with ignition timing, you can advance it up until it starts pinging under load, then retard it a few degrees from there, and that'll be your best setting for power. (generally) If you are in a state that does smog inspections, doing this will likely make it fail, so adjust it back to the spec beforehand.

Downsides: You'll use more gas. Also this gets very complicated when you introduce a power adder such as nitrous or a turbo. Also also, if you do it too much there is the possibility of doing some damage to your engine, so don't make big adjustments but rather a series of little ones.

 

this is my engine bay stock as hell, it a zc block and i think its a d15b carb head..

 

wow... find yourself a set of dual side-draft Webers and talk to Bisimoto.

best to adjust with a timing light. if you get it on a dyno (maybe with an adjustable cam gear for more adjustability) you can really get the most out of an adjustment like this.

otherwise just set it in the middle of the slot and drive...

 

it all depends on fuel. get a timing light. best performance is reached right before the point of detonation. the higher octane the more timing because of the related combustion time. typically I have seen 16-18 degrees @ 750rpm being the best. but he is on regular 87. bump the octane bump the timing. its one thing not to guess at this one.