On the starts, the clutch should be holding the engine at peak torque. If it is doing that, peak torque gets transferred to the rear axle and with peak torque at the rear axle you have peak horsepower at the rear axle, always.New to the clone engine but our state championship race is coming up and it’s clone only. We have a green plate that has been sitting for almost two years! Think it’s ok to run? Only 3 races on it. Was wondering about clutch engagement rpms and what we should be running for rpm?
Shhhhhhhh my son needs all the help he can getI really couldn't disagree more with the recommended clutch engagement rpm in this thread guys.
If we can agree that we want clutch engagement to occur at peak torque, than we'll study the dyno data to determine where that is. And I'll let everyone in on a little secret, for every green plate clone engine on earth, regardless of builder and pipe, peak torque will occur just off idle rpm. Right around 3000 rpm. (Assuming we have an idle that is close to 2200 to 2500rpm)
Here's a green plate screen shot from a while back I just happened to have handy. If you look at the table. At 3800, we're off peak torque by almost a full ft/lb. Which represents roughly a 14% loss of what we could have potentially had.
Torque turns the tires guys.
My point is, if we race the same green plate engine, and I have my clutch set to lockup at 3000 and you have yours to lock up at 3800, I'll smoke you when the green flag drops every time.
In fact, for the clone engine, it isnt until the blue plate where peak torque occurs at a rpm higher than 3k.
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