Advancing timing on a 2g

[luvmygst]

I think I have come up with a way to advance the base timing on a 2g car with the crank angle sensor.Basically I have a extra trigger plate, and I have figured out how to make it adjustable.( Kind of like adj. cam gears.) I have not finished it yet, its pretty precision work, it will be spinning 7000rpm and a failure will be BAD. The main question is do you think 2g owners would benifit from this adjustment. If we could add 2-4deg of base timing wiithout knock there should be more power to be had. one big drawback is that it is a pain in the a$* to adjust, you have to remove the lower timing cover. If I get it working properly, I might take an extra cover and cut holes in it to get to the adjustments. Just give me opinions and I will keep you posted on the results.

 

[DragSourceTsi]

it's faster and simpler to just install a 1g cam angle sensor

 

[MyBeatGSX]

Correct me if I'm wrong, but if I understand how it works correctly, the ECU only has so much total timing to work with... say 28*. If you advance base timing 4*, that just puts your base 4* closer to 28*, the ECU still can't advance beyond 28* no matter how far you advance base timing. So you make no more power than if you had let it advance timing on its own, but you're hurting its ability to retard timing.

Again, I could be wrong, but that's how I've always understood it.

 

[luvmygst]

Correct me if I'm wrong, but if I understand how it works correctly, the ECU only has so much total timing to work with... say 28*. If you advance base timing 4*, that just puts your base 4* closer to 28*, the ECU still can't advance beyond 28* no matter how far you advance base timing. So you make no more power than if you had let it advance timing on its own, but you're hurting its ability to retard timing.

Again, I could be wrong, but that's how I've always understood it.

You are not reallyhurting the ability to retard, because the computer still thinks its at regular base timing. It would see knock sooner and pull the same timing back out , the key is not to see knock. Another thing is the ecu will never advance the timing as far as it can go. Im just looking for a simple way to gain the ability to tune base timing. As far as the ecu is concerend the timing is stilll factory. I know that on my turbo mustang I can tell a diffrence from going 4deg to 6 deg base timing, but then again the compuer will let you set the base timing. The ecu in the eclipse will think nothing has changed.

On another note, how do you install a 1g cas on a 2g head? I dont waant to do a 1g head swap.

 

[MyBeatGSX]

You're mustang uses a distributor, not DIS correct? Maybe that's different, in that, advancing base timing on a distributor advances all timing. I don't think that's nessesarily true with DIS.

 

[luvmygst]

You're mustang uses a distributor, not DIS correct? Maybe that's different, in that, advancing base timing on a distributor advances all timing. I don't think that's nessesarily true with DIS.

It works the same way. You set the base that the computer starts its maps at. This works on DIS and with distrubitors. The 1g's are a DIS also.

 

[PieEyedPiper]

Correct me if I'm wrong, but if I understand how it works correctly, the ECU only has so much total timing to work with... say 28*. If you advance base timing 4*, that just puts your base 4* closer to 28*, the ECU still can't advance beyond 28* no matter how far you advance base timing. So you make no more power than if you had let it advance timing on its own, but you're hurting its ability to retard timing.

Again, I could be wrong, but that's how I've always understood it.

just out of curiosity, have you seen a car make a WOT run with 28* timing? Sounds like a blown enigne to me.

 

[MyBeatGSX]

just out of curiosity, have you seen a car make a WOT run with 28* timing? Sounds like a blown enigne to me.

I didn't say it would actually run that timing. I know Honda ECU's have in the area of 24-28* of total timing to work with.

It works the same way. You set the base that the computer starts its maps at. This works on DIS and with distrubitors. The 1g's are a DIS also.

I learn something new everyday.