Timing and TQ curve? [Archive] - Chevelle Tech

: Timing and TQ curve?


GotSpray
Oct 11th, 07, 10:27 AM
Someone just said to me that if you pull timing out of an engine to get traction off the line that it's actually making more torque down low thus = less traction?

Is that b.s or what!:noway:

onovakind67
Oct 11th, 07, 10:42 AM
Who was that someone that just said that? How would they know?

godsend
Oct 11th, 07, 10:45 AM
If the engine needs less timing on that rpm than it has it would produce more torque.

If the engine needs more timing on that rpm than it has it will produce less torque when taking away more timing.

Many engines needs different amount of timing to produce most tq. and differs alot when running fat/lean.

In a wheel spinning situation looking at logs you are often fat. So it needs less timing to produce most Tq.

GotSpray
Oct 11th, 07, 10:46 AM
Who was that someone that just said that? How would they know?

My "brilliant" friend with a 70 firebird i was thinking to my self, no way...

Jerry70
Oct 11th, 07, 11:00 AM
Someone just said to me that if you pull timing out of an engine to get traction off the line that it's actually making more torque down low thus = less traction?

Is that b.s or what!:noway:

Like Godsend said, unless it already has too much timing, reducing timing will reduce torquel. That's how factory traction control systems work. They cut the timing back to reduce power to the wheel and most also apply some braking to the spinning wheel. Those systems work well on wet or icy roads but not at the drag strip. Typically, the reduced wheelspin isn't enough to make up for the power lost when max accelleration is needed.