I read somewhere that at MAX TORQUE a more advanced timing smokes more. At lower torque a more advanced timing smokes less. I don't know if this is true or just some BS I read on the internet......somewhere......:confused013: anyone know anything about it?

 

bump i want to know also....whats bd's timing like compared to the different settings on smarty also....anyone know what crazy larry's timing compares to as far as number level on smarty timing

 

Bob? Any input on this?:confused013:

 

you can have too much timing, but the advances that are made by the smarty or bd is not damaging as a whole, as long as you dont stack boxes/programmers that both add timing, also remember the more advanced timing you have, the cooler your egts will be, but over advancing you will melt a piston.....

good specs to go by when advancing timing...

Advancing the timing will...

Decrease exhaust temperature
Increase cylinder temperatures/pressures
Increase fuel economy (yes, economy is better)
Increase your output of NOx (a pollutant)
Decrease your output of Hydrocarbons (a pollutant)
Increase the amount of black smoke at peak torque

Raising the cylinder temperatures/pressures after already having increased the fueling pushes the engine that much closer to its design limits, but lowering the exhaust temperature helps balance against the increased heat load from the increased fueling

Engine parameter: TIMING is:
.............................................RETARDED ( - ) ADVANCED ( + )
EXHAUST TEMP.................................. increases-------decreases
CYLINDER PRESSURE........................... decreases-------increases
INTAKE MANIFOLD PRESSURE
(BELOW P-TORQUE) WASTEGATED....... increases-------decreases
BSFC (brake specific fuel consumption)... increases-------decreases
NOX (oxides of nitrogen)...................... decreases-------increases
HEAT REJECTION................................ increases--------decreases
HYDROCARBONS (HC).......................... increases--------decreases
BLACK SMOKE: 1000RPM..................... increases--------decreases
BLACK SMOKE: PEAK TORQUE.............. decreases--------increases
BLACK SMOKE: RATED........................ increases--------decreases
WHITE SMOKE: < 1000RPM.................. increases--------decreases
WHITE SMOKE: > 1000RPM.................. increases--------decreases

 

also remember if you go beyond 15* of timing the engine noise will rapidly increase and you will see more abundant black then blue smoke.....

 

How much of a timing advance before the burning fuel starts resisting the rise of the piston at the end of the compression stroke?

 

And I guess that kinda depends on the cetane number of the diesel fuel.

 

Ok now I have another question about this. How can smarty make (on my truck anyway) a puff of smoke on tq 4 tnt 7 but crazy larry will smoke smoke smoke til i get to about 30mph?

 

Do you have low end fueling on if so that will definetly do it to you. Tq management and low end fueling are not the same. It basically throws fuel at it down low which is the only reeason i had liked the Bullydog but it cant be rough

 

ok and another question does bully dogs tq management setting delete trq management or is it similar to the tq management of smarty?

 

BUMP bUMP BUMP

 

SouthernSmoke- good info...... what does the black to blue smoke indicate? I know blue generally means oil but dont understand how advancing timing could cuz blue smoke. thanks