Timing 5 degrees advanced?

[Layzer Mosh]

I read somewhere stating you should advance your timing 5 degrees.
Well my question is why? Advancing the timing just seems counterproductive to me.

 

[Kalub]

I think you may have read wrong.

Base timing should be 5°BTDC. Any advancement/retarding of the timing should be handled by the ECU or an experienced tuner.

 

[Archer Fabrications]

5* advance with a timing light is correct. Dunno why but it just is.

 

[BogusSVO]

Yes the ignition timing is advanced .

This allows the flame front from the spark plug to burn the air/fuel mix and shove the piston down in the power stroke.

If the mix was ignited at TDC, then the flame front would have to chase the piston down the bore.

Too much advance then the the piston is trying to compress the expanding air fuel mix on compression stroke. (This is also pre-det, but something other than the spark plug ignights the mix)

 

[jayson427]

i guess i was confused when i read this. i thought he was talking about cam gear timing haha but what he means for a 1g is different or is this with any 4g63 or motor in general?

 

[Archer Fabrications]

4g63 in general

 

[TurboLaserRS]

My shop manual says 5* BTDC. On your car as well as mine this means adjustment of the CAS and the use of a timing light. It's really pretty easy to do. Just make sure you let the car warm up to operating temp so that your idle has fallen to where it stays.

 

[WES_393]

My shop manual says 5* BTDC. On your car as well as mine this means adjustment of the CAS and the use of a timing light. It's really pretty easy to do. Just make sure you let the car warm up to operating temp so that your idle has fallen to where it stays.

This only applies to those with an adjustable 1g CAS. For everyone else, just hope the base timing is correct.

 

[BogusSVO]

i guess i was confused when i read this. i thought he was talking about cam gear timing haha but what he means for a 1g is different or is this with any 4g63 or motor in general?

You can advance the mechanical timing too, thats what Adjustable cam gear are for.

Advance the cam for more bottom end, retard the cam for more upper.

When you advance the cam it opens more before TDC

Most aftermarket cams are ground with 4* advance

Now different cars will have different ignition lead advances.

Common to the 4g63 is 5* BTDC
Common to most fords and chevys is 10-12*

Most bomber class small blocks will run 32-36* of total timing

 

[Layzer Mosh]

Well in every other turbo vehicle I've had, retarding the timing causes more of a load on the motor causing the turbo to spool more quickly....

I guess what I'm trying to ask is with that said, why would we want to advance our timing? To cause more turbo lag?
Or is there something special about the timing? I've never ran into predet issues before. I haven't really experimented with this motor though. I just didn't see why there would be a difference..