What happens when you drop the transmission into neutral?
It is not linear in nature, either, the higher loads you force upon it, the sooner it will happen. By dropping it back into gear from neutral, you are putting these “higher stress levels” through the hard parts of your transmission, introducing the stress that would not otherwise be there.
When does the RPM go back to normal?
The RPM will usually go back to normal as you accelerate the vehicle, but will increase again after you stop. This is definitely not a normal situation. If you are experiencing a rough idle or your RPM is running high, then there are a variety of reasons for why this could be happening.
Is there a maximum amount of torque a transmission can handle?
Transmissions are only made to withstand so much torque before they fail. Even if you don’t exceed this theoretical maximum, you are still dropping a great deal of torque back through the transmission. This has an accumulating effect. Noted race car driver/designer, Carrol Smith, wrote a book called Engineer to Win.
The RPM will usually go back to normal as you accelerate the vehicle, but will increase again after you stop. This is definitely not a normal situation. If you are experiencing a rough idle or your RPM is running high, then there are a variety of reasons for why this could be happening.
Is there too much advance at midrpm under load?
If you have ported vac, and a mechanicl curve for manifold vac, you have waaay too much advance at midRPM under load, just at the point you want advance to either drop back a little or at least not advance very much. Stock smog heads need more overall advance because of poor chamber design, but they also want a slower curve as well.
How does ported vs manifold affect idle timing?
In any case, ported vs manifold only affects idle timing, so it wouldn’t have any effect at 2000-3000 RPM steady state cruise anyway. Damon and Mark – I think you guys are right that the centrifugal is all-in too quickly.
Why does the torque converter make noise in neutral?
This puts the torque converter in operational mode. Since the torque converter pump, stator and turbine spin freely without engagement during neutral or park, the noise will not be present in those settings. Accelerate slowly in drive and listen to whether the torque converter noise will get quieter as the vehicle moves forward.