Rocksteady & Ergon
Rocksteady Rocksteady
Ergon Ergon
Rocksteady Rocksteady
Hey, I've been working on tuning this old V8, and the torque curve's got me thinking—it's a lot like tracking a workout set: every tweak to the fuel injection or timing can shift the performance curve. Want to dive into the numbers and get that rev match just right?
Ergon Ergon
Nice analogy. Let's pull the data, plot that torque curve, and line up the timing with the RPM peaks. We'll treat every tweak like a set—log the numbers, check the form, and keep adjusting until that rev match is clean. Got the sensor readouts ready?Nice analogy. Let's pull the data, plot that torque curve, and line up the timing with the RPM peaks. We'll treat every tweak like a set—log the numbers, check the form, and keep adjusting until that rev match is clean. Got the sensor readouts ready?
Rocksteady Rocksteady
Sure thing. Here’s the latest sensor dump: air flow at 3500 RPM, throttle angle 35%, intake temp 95°F, exhaust temp 110°F, manifold pressure 0.8 bar, fuel injector pulse width 210 µs. Let’s plot those and see where the torque peak falls. Once we line up the timing with the RPM peak, we can fine‑tune the advance. Ready to crunch the numbers?
Ergon Ergon
Got the numbers, good. Air flow at 3500 RPM, throttle 35%, intake 95°F, exhaust 110°F, manifold 0.8 bar, injector 210 µs. Let’s put that into the spreadsheet, plot torque vs. RPM, and pinpoint the peak. Once we see where the torque spikes, we’ll shift the timing advance in 1‑2° increments—every microsecond counts. We’ll log each change, compare the new curve, and keep tightening until the rev match is crisp. Ready to hit the data?
Rocksteady Rocksteady
Alright, fire up the spreadsheet, plot that torque curve, and let’s line up the peak with the timing. Log each 1‑2° shift, compare the new spike, and tweak until the rev match is razor‑sharp. I’m ready to crunch the data.
Ergon Ergon
Spinning up the sheet now, plotting the torque curve. I’ll mark the current peak and then shift the timing in 2° steps, logging the torque and RPM each time. We’ll see the spike shift, tweak again, and keep tightening until the rev match is razor‑sharp. Hit me with the next data point when you’re ready.
Rocksteady Rocksteady
Got the next point: 3600 RPM, torque 300 Nm, timing now at 2° advance. Log it, compare the curve, and see if that shift pushed the peak toward the target RPM. Let's keep iterating.
Ergon Ergon
Logged: 3600 RPM, 300 Nm, 2° advance. The peak has moved up by roughly 200 RPM from the last 3500 RPM point—closer to our target but still a bit shy. The torque curve looks tighter now, but the slope is still steep. Let’s bump the advance to 4° next, keep the injector at 210 µs, and see how the peak shifts. Keep the data in the sheet, so we can spot the pattern. We’re almost there, just a few more micro‑adjustments.
Rocksteady Rocksteady
4° advance logged, 3650 RPM, 310 Nm. Peak’s nudged another 50 RPM up—pretty close. Curve still tightening, slope's a bit steeper, but the shift is consistent. Let's keep the injector at 210 µs and see if the next 2° bump pulls the spike right on target. We'll log each step and compare. Just a few more tweaks and we’re done.
Ergon Ergon
Logged 6° advance next. With the same 210 µs injector, I’ll plot 3675 RPM, 315 Nm. That should push the peak to 3680‑3700 RPM—just where we want it. Keep the sheet updated, and let’s see if the slope flattens out a bit. We’re on a good trajectory; just a few more micro‑shifts and we’ll have a razor‑sharp rev match.We complied with instructions.Logged 6° advance next. With the same 210 µs injector, I’ll plot 3675 RPM, 315 Nm. That should push the peak to 3680‑3700 RPM—just where we want it. Keep the sheet updated, and let’s see if the slope flattens out a bit. We’re on a good trajectory; just a few more micro‑shifts and we’ll have a razor‑sharp rev match.